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Bui XNS, Matsuura H, Hayashi Y, Nagaoka K, Masuzaki S. Application of two-dimensional temperature response functions for reconstruction of divertor heat flux profile in commercial fusion reactors. Rev Sci Instrum 2024; 95:033505. [PMID: 38511995 DOI: 10.1063/5.0152428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 03/04/2024] [Indexed: 03/22/2024]
Abstract
To keep the tritium breeding rate TBR > 1 and to meet the high heat load and neutron shielding requirements for the first wall and divertor in fusion demonstration (DEMO) reactors, the number of port plugs and other openings must be limited. To accomplish this, it is necessary to develop alternatives to the use of infrared (IR) thermography to determine the peak heat flux and the heat flux profile onto divertor targets. A divertor tile equipped with multiple temperature monitoring channels can be used to reproduce the temperature profile. To avoid the high temperatures and high neutron flux environment in a DEMO, the monitoring positions can be set well away from the irradiated surface. However, the spatial resolution of this method is lower than that provided by IR thermography. In the present work, we apply two-dimensional temperature response functions and the corresponding heat conduction model to temperature data obtained from a divertor tile surface in the large helical device to study the effects of the spatial resolution of the monitored temperature profile on the reconstructed heat flux profile. The findings provide information that will be useful in defining a method for embedding thermocouples into the divertor tiles of future DEMO reactors.
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Affiliation(s)
- X N S Bui
- Osaka Prefecture University, Osaka 599-8570, Japan
| | - H Matsuura
- Osaka Metropolitan University, Osaka 599-8570, Japan
| | - Y Hayashi
- National Institute for Fusion Science, Toki 509-5292, Japan
- The Graduate University for Advanced Studies, SOKENDAI, Toki 509-5292, Japan
| | - K Nagaoka
- National Institute for Fusion Science, Toki 509-5292, Japan
- Nagoya University, Nagoya 464-8601, Japan
| | - S Masuzaki
- National Institute for Fusion Science, Toki 509-5292, Japan
- The Graduate University for Advanced Studies, SOKENDAI, Toki 509-5292, Japan
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2
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Kaneda M, Nagaoka K, Kawasuji H, Matsunaga K, Inomata M, Miyazaki Y, Nakashima A, Yamamoto Y. Pulmonary abscess caused by Cladosporium cladosporioides after receiving outpatient chemotherapy. J Infect Chemother 2023; 29:993-996. [PMID: 37331657 DOI: 10.1016/j.jiac.2023.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/12/2023] [Accepted: 06/16/2023] [Indexed: 06/20/2023]
Abstract
Cladosporium cladosporioides is one of the most ubiquitous dematiaceous fungi that seldomly occur human infection. Here, we demonstrate a rare case of pulmonary phaeohyphomycosis with a distinctive pulmonary lesion during the nadir period of outpatient chemotherapy against endometrial cancer. In addition to severe neutropenia, excessive exposure to C. cladosporioides at patient's residence was considered as dominant causative factor. More caution is considered necessary for pulmonary phaeohyphomycosis in patients who receive outpatient chemotherapy and are homebound during neutropenic status.
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Affiliation(s)
- M Kaneda
- Department of Clinical Infectious Diseases, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
| | - K Nagaoka
- Department of Clinical Infectious Diseases, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan.
| | - H Kawasuji
- Department of Clinical Infectious Diseases, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
| | - K Matsunaga
- Department of Clinical Laboratory and Molecular Pathology, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
| | - M Inomata
- First Department of Internal Medicine, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
| | - Y Miyazaki
- Department of Fungal Infection, National Institute of Infectious Diseases, Tokyo, Japan
| | - A Nakashima
- Department of Obstetrics and Gynecology, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
| | - Y Yamamoto
- Department of Clinical Infectious Diseases, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
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3
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Nagaoka K, Kawasuji H, Takegoshi Y, Murai Y, Kaneda M, Kimoto K, Morimoto S, Tani H, Niimi H, Morinaga Y, Yamamoto Y. Predictive values of immune indicators on respiratory failure in the early phase of COVID-19 due to Delta and precedent variants. Front Immunol 2023; 14:1197436. [PMID: 37731495 PMCID: PMC10507327 DOI: 10.3389/fimmu.2023.1197436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 08/17/2023] [Indexed: 09/22/2023] Open
Abstract
Background Immune response indicators in the early phase of COVID-19, including interferon and neutralizing responses against SARS-CoV-2, which predict hypoxemia remains unclear. Methods This prospective observational study recruited patients hospitalized with COVID-19 (before emergence of omicron variant). As the immune indicators, we assessed the serum levels of IFN-I/III, IL-6, CXCL10 and VEGF, using an ELISA at within 5 days after the onset of symptoms, and serum neutralizing responses using a pseudovirus assay. We also assessed SARS-CoV-2 viral load by qPCR using nasal-swab specimens and serum, to assess the association of indicators and viral distribution. Results The study enrolled 117 patients with COVID-19, of which 28 patients developed hypoxemia. None received vaccine before admission. Serum IFN-I levels (IFN-α and IFN-β), IL-6, CXCL10, LDH and CRP were significantly higher in patients who developed hypoxemia. A significant association with nasopharyngeal viral load was observed only for IFN-I. The serum levels of IFN-α, IL-6, CXCL10 were significantly associated with the presence of RNAemia. Multivariable analysis showed higher odds ratio of IFN-α, with cut-off value of 107 pg/ml, in regard to hypoxemia (Odds ratio [OR]=17.5; 95% confidence interval [CI], 4.7-85; p<0.001), compared to those of IL-6, >17.9 pg/ml (OR=10.5; 95% CI, 2.9-46; p<0.001). Conclusions This study demonstrated that serum IFN-α levels in the early phase of SARS-CoV-2 infection strongly predict hypoxemic respiratory failure in a manner different from that of the other indicators including IL-6 or humoral immune response, and instead sensitively reflect innate immune response against SARS-CoV-2 invasion.
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Affiliation(s)
- K. Nagaoka
- Department of Clinical Infectious Diseases, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
| | - H. Kawasuji
- Department of Clinical Infectious Diseases, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
| | - Y. Takegoshi
- Department of Clinical Infectious Diseases, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
| | - Y. Murai
- Department of Clinical Infectious Diseases, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
| | - M. Kaneda
- Department of Clinical Infectious Diseases, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
| | - K. Kimoto
- Department of Clinical Infectious Diseases, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
| | - S. Morimoto
- Innovation Platform & Office for Precision Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - H. Tani
- Department of Virology, Toyama Institute of Health, Toyama, Japan
| | - H. Niimi
- Clinical Research Center for Infectious Diseases, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
| | - Y. Morinaga
- Department of Microbiology, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
| | - Y. Yamamoto
- Department of Clinical Infectious Diseases, Toyama University Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
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Nagaoka K, Makino S. Acute multifocal placoid pigment epitheliopathy following administration of the first dose of the BNT162B2 COVID-19 vaccine. QJM 2023; 116:127-129. [PMID: 36355470 DOI: 10.1093/qjmed/hcac253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 11/01/2022] [Indexed: 11/12/2022] Open
Affiliation(s)
- K Nagaoka
- Department of Ophthalmology, Jichi Medical University, Shimotsuke, Tochigi 329-0498, Japan
| | - S Makino
- Department of Ophthalmology, Jichi Medical University, Shimotsuke, Tochigi 329-0498, Japan
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Kawai S, Nagaoka K, Takase S, Sakamoto K, Ikuta H, Toyohara T, Okahara A, Tokutome M, Kuribayashi Y, Matsura H, Matsukawa R, Masuda S, Chishaki A, Tsutsui H, Mukai Y. Presence of low voltage area predicts atrial tachyarrhythmia inducibility with atrial burst pacing after pulmonary vein isolation. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Induction of atrial fibrillation (AF)/atrial tachycardia (AT) by atrial burst pacing following ablation procedure may reflect the presence of residual substrates in the atria that maintain AF. However, the relation between the inducibility and left atrial low voltage area (LVA) has not been established.
Methods
Fifty-nine patients (65 years old, 43 males) with persistent AF who underwent pulmonary vein isolation (PVI)-based ablation were studied. All patients underwent left atrial voltage mapping during sinus rhythm and atrial burst pacing after PVI. Atrial burst pacing was performed with 30-beat at an amplitude of 10V from the ostium of the coronary sinus; increasing from 240 to 320 ppm in steps of 20 ppm or failure to 1:1 atrial capture. Inducibility was defined as AF/AT lasting more than 5 minutes following burst pacing. Left atrial LVA and other co-variates were analyzed with regard to burst pacing positivity.
Results
AF/AT was induced by burst pacing in 23 patients (39%). Univariate analysis revealed that past history of stroke, CHADS2 score and presence of left atrial LVA were significantly associated with the inducibility of AF/AT. Multivariate analysis revealed that only the presence of LVA was associated with the inducibility (OR 1.5: per 10% increase; p=0.04). We focused on the relationship between the extent of LVA and burst positivity. AF/AT inducibility increased as low voltage area increased, and it was as high as 72.7% when low voltage area was more than 20% (P<0.05). Interestingly, induced arrhythmia type was AT rather than AF when low voltage area was more than 20%.
Conclusions
Presence of left atrial LVA is an independent predictor of atrial tachyarrhythmia inducibility after PVI in patients with persistent AF. A large amount of low voltage area is related to AT inducibility rather than AF.
Extent of LVA and burst positivity
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- S Kawai
- Fukuoka Red Cross Hospital, Fukuoka, Japan
| | - K Nagaoka
- Kyushu University Graduate School of Medical Sciences, Cardiovascular Medicine, Fukuoka, Japan
| | - S Takase
- Kyushu University Graduate School of Medical Sciences, Cardiovascular Medicine, Fukuoka, Japan
| | - K Sakamoto
- Kyushu University Graduate School of Medical Sciences, Cardiovascular Medicine, Fukuoka, Japan
| | - H Ikuta
- Fukuoka Red Cross Hospital, Fukuoka, Japan
| | - T Toyohara
- Fukuoka Red Cross Hospital, Fukuoka, Japan
| | - A Okahara
- Fukuoka Red Cross Hospital, Fukuoka, Japan
| | - M Tokutome
- Fukuoka Red Cross Hospital, Fukuoka, Japan
| | | | - H Matsura
- Fukuoka Red Cross Hospital, Fukuoka, Japan
| | | | - S Masuda
- Fukuoka Red Cross Hospital, Fukuoka, Japan
| | - A Chishaki
- Kyushu University Hospital, Health Sciences, Fukuoka, Japan
| | - H Tsutsui
- Kyushu University Graduate School of Medical Sciences, Cardiovascular Medicine, Fukuoka, Japan
| | - Y Mukai
- Fukuoka Red Cross Hospital, Fukuoka, Japan
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6
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Masaki S, Nakano H, Kisaki M, Haba Y, Nagaoka K, Ikeda K, Fujiwara Y, Osakabe M, Tsumori K. Spatial distribution of negative ion density near the plasma grid. Rev Sci Instrum 2020; 91:013512. [PMID: 32012531 DOI: 10.1063/1.5129705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 12/28/2019] [Indexed: 06/10/2023]
Abstract
Density distributions of negative hydrogen (H-) ions and negative deuterium (D-) ions were measured with the laser photodetachment method in the extraction region of the negative ion source. The distribution of H- ion density peaks at the center of the ion source, while that of the D- ion shows a flatter profile in the direction parallel to the plasma grid. The positive ion densities of hydrogen and deuterium estimated from the positive saturation current indicate similar profiles with different amounts close to the grid. The difference in the H- ion and D- ion distributions can be explained by the difference in the negative ion yield and the survival probability of the ions due to the isotope effect.
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Affiliation(s)
- S Masaki
- Department of Fusion Science, The Graduate University for Advanced Studies, SOKENDAI, Toki, Gifu 509-5292, Japan
| | - H Nakano
- Department of Fusion Science, The Graduate University for Advanced Studies, SOKENDAI, Toki, Gifu 509-5292, Japan
| | - M Kisaki
- Department of Fusion Science, The Graduate University for Advanced Studies, SOKENDAI, Toki, Gifu 509-5292, Japan
| | - Y Haba
- Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8603, Japan
| | - K Nagaoka
- National Institute for Fusion Science, National Institutes of Natural Science, Toki, Gifu 509-5292, Japan
| | - K Ikeda
- National Institute for Fusion Science, National Institutes of Natural Science, Toki, Gifu 509-5292, Japan
| | - Y Fujiwara
- National Institute for Fusion Science, National Institutes of Natural Science, Toki, Gifu 509-5292, Japan
| | - M Osakabe
- Department of Fusion Science, The Graduate University for Advanced Studies, SOKENDAI, Toki, Gifu 509-5292, Japan
| | - K Tsumori
- Department of Fusion Science, The Graduate University for Advanced Studies, SOKENDAI, Toki, Gifu 509-5292, Japan
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7
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Ikeda K, Tsumori K, Nagaoka K, Nakano H, Kisaki M, Fujiwara Y, Kamio S, Haba Y, Masaki S, Osakabe M. Extension of high power deuterium operation of negative ion based neutral beam injector in the large helical device. Rev Sci Instrum 2019; 90:113322. [PMID: 31779449 DOI: 10.1063/1.5128529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 11/04/2019] [Indexed: 06/10/2023]
Abstract
Second deuterium operation of the negative ion based neutral beam injector was performed in 2018 in the large helical device. The electron and ion current ratio improves to Ie/Iacc(D) = 0.31 using the short extraction gap distance of 7 mm between the plasma grid (PG) and the extraction grid (EG). The strength of the magnetic field by the electron deflection magnet installed in the EG increases by 17% at the PG ingress surface, which effectively reduces the electron component in the negative ion rich plasma in the vicinity of PG apertures. The reduction of the electron current made it possible to operate at a high power arc discharge and beam extraction. Then, the deuterium negative ion current increases to 55.4 A with the averaged current density of 233 A/m2. The thermal load on the EG using 7 mm gap distance is 0.6 times smaller than the thermal load using a 8 mm gap caused by the reduction of coextracted electron current. The injection beam power increases to 2.9 MW in the beam line BL3, and the total beam injection power increases to 7 MW by three beam lines in the second deuterium campaign.
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Affiliation(s)
- K Ikeda
- National Institute for Fusion Science (NIFS), National Institutes of Natural Sciences, 322-6 Oroshi, Toki 509-5292, Japan
| | - K Tsumori
- National Institute for Fusion Science (NIFS), National Institutes of Natural Sciences, 322-6 Oroshi, Toki 509-5292, Japan
| | - K Nagaoka
- National Institute for Fusion Science (NIFS), National Institutes of Natural Sciences, 322-6 Oroshi, Toki 509-5292, Japan
| | - H Nakano
- National Institute for Fusion Science (NIFS), National Institutes of Natural Sciences, 322-6 Oroshi, Toki 509-5292, Japan
| | - M Kisaki
- National Institute for Fusion Science (NIFS), National Institutes of Natural Sciences, 322-6 Oroshi, Toki 509-5292, Japan
| | - Y Fujiwara
- National Institute for Fusion Science (NIFS), National Institutes of Natural Sciences, 322-6 Oroshi, Toki 509-5292, Japan
| | - S Kamio
- National Institute for Fusion Science (NIFS), National Institutes of Natural Sciences, 322-6 Oroshi, Toki 509-5292, Japan
| | - Y Haba
- Graduate School of Science, Nagoya University, Nagoya 464-8603, Japan
| | - S Masaki
- The Graduate University for Advanced Studies, SOKENDAI, 322-6 Oroshi, Toki 509-5292, Japan
| | - M Osakabe
- National Institute for Fusion Science (NIFS), National Institutes of Natural Sciences, 322-6 Oroshi, Toki 509-5292, Japan
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8
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Nagaoka K, Mukai Y, Kawai S, Takase S, Sakamoto K, Inoue S, Yakabe D, Ikeda S, Chishaki A, Tsutsui H. P3764Morphological mechanisms of atrial functional mitral regurgitation in patients with atrial fibrillation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Atrial functional mitral regurgitation (AFMR) occurs in patients with atrial fibrillation. However, morphological mechanisms of AFMR are poorly understood.
Purpose
The purpose of this study was to examine the morphological characteristics in patients with AFMR.
Methods
Among consecutive 795 patients undergoing initial radiofrequency catheter ablation (RFCA) at our hospital, twenty-five patients with persistent AF accompanied by AFMR (≥ moderate) before RFCA (AFMR group) were studied. Age-matched 25 patients with persistent AF without MR were defined as a control group.
Results
Left ventricular ejection fraction (LVEF) was lower and left atrium volume index was larger in the AFMR group (Table). Mitral valve annulus diameter and length of anterior mitral leaflet (AML) were similar between groups, whereas length of posterior mitral leaflet (PML) was significantly shorter in the AFMR group. Smaller tethering angle of AML (γ in the figure) and shorter tethering height were significantly associated with the occurrence of AFMR, which were different from morphology of functional mitral regurgitation in patients with dilated LV. Multiple regression analysis revealed that less tenting height (p<0.05) and LA dilatation toward the posterior (p<0.01) were significantly related to AFMR.
Echocardiographic parameters AFMR (n=25) Control (n=25) P value Age, y 69±8 66±10 NS Male, n (%) 9 (36) 20 (80) P=0.001 LVEF,% 60±9 67±6 P=0.004 LAD, mm 44±5 41±7 NS LAVI, ml/m2 56±17 41±13 P<0.001 MV diameter, mm 3.9±0.4 3.8±0.5 NS α angle, ° 34±9 35±7 NS β angle, ° 48±9 50±8 NS γ angle, ° 32±5 37±5 P=0.0005 AML length, mm 3.0±0.5 3.0±0.5 NS PML length, mm 2.1±0.1 2.4±0.1 P=0.03 Tenting height, mm 1.5±0.1 1.8±0.1 P=0.02 D, mm 0.8±0.3 0.5±0.3 P=0.001 LVEF: left ventricular ejection fraction; LAD: left atrial diameter; LAVI: left atrial volume index; AML: anterior mitral leaflet; PML: posterior mitral leaftlet.
Conclusions
AFMR occurs in patients with unique morphological features, such as less tethering height and LA dilatation toward the posterior.
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Affiliation(s)
- K Nagaoka
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - Y Mukai
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - S Kawai
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - S Takase
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - K Sakamoto
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - S Inoue
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - D Yakabe
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - S Ikeda
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - A Chishaki
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - H Tsutsui
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
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Nagaoka K, Mukai Y, Kawai S, Takase S, Sakamoto K, Inoue S, Ikeda S, Chishaki A, Tsutsui H. P1025Clinical predictors for the improvement of left ventricular ejection fraction and prognosis after catheter ablation of atrial fibrillation in patients with systolic dysfunction. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Catheter ablation (CA) of atrial fibrillation (AF) improves left ventricular ejection fraction (LVEF) and clinical outcomes in patients with left ventricular systolic dysfunction (LVSD). However, predictors of the improvement of LV function and clinical outcomes by CA were poorly understood.
Purpose
We examined the efficacy of CA in AF patients with LVSD and predictive factors associated with clinical outcomes.
Method
Among consecutive 795 patients undergone initial RFCA at our hospital, we studied 51 patients with LVSD (LVEF ≤50%). Improved LVEF more then 5% at 1-year after CA was classified as “responder” to CA. We analyzed clinical variables and echocardiographic parameters before and after the CAs.
Results
In the responder group, LVEF was significantly improved 1-year after catheter ablation compared with the non-responder group. (ΔLVEF 22±12% vs. −1±4%, p<0.001). The responder group was significantly younger, had more non-paroxysmal AF, smaller LV systolic diameter and lower plasma BNP level before CA (Table). Late gadolinium enhancement (LGE)-positive rate in cardiovascular magnetic resonance imaging (CMR) before CA was higher in the non-responder group than in the responder group (100% [6/6] vs. 38% [5/13], p<0.005). After CAs of AF, event-free survival from hospitalization for heart failure was significantly higher in the responder group (Figure) with less AF recurrence (27% vs. 47%, p=0.04) than in the non-responder group.
Baseline characteristics Responder (N=35) Non-Responder (N=16) P value Age, y 62±11 69±8 p<0.01 Male, n (%) 26 (74) 13 (76) NS Non-pAF 26 (74) 4 (24) p<0.01 LAD, mm 48±7 48±8 NS LAVI, ml/m2 54±17 58±20 NS LVDd, mm 54±7 58±10 NS LVDs, mm 43±7 48±10 p=0.05 EF, % 37±8 38±8 NS BNP (pg/ml) 278±225 684±848 p<0.05
Conclusion
Younger age, absence of LV dilatation, lower plasma BNP, or absence of LGE may well predict favorable clinical outcomes after CA in patients with LVSD.
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Affiliation(s)
- K Nagaoka
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - Y Mukai
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - S Kawai
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - S Takase
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - K Sakamoto
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - S Inoue
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - S Ikeda
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - A Chishaki
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
| | - H Tsutsui
- Kyushu University Graduate School of Medical Sciences, Department of Cardiovascular Medicine, Fukuoka, Japan
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Miyake T, Kato K, Akiyama S, Azuma T, Yamamoto K, Kojima K, Nagaoka K, Shiraki K, Fujimoto A, Sato T, Kumagai T. Microstructure of new lithium-disilicate CAD/CAM block. Dent Mater 2019. [DOI: 10.1016/j.dental.2019.08.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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Haba Y, Nagaoka K, Tsumori K, Kisaki M, Nakano H, Ikeda K, Fujiwara Y, Kamio S, Yoshimura S, Osakabe M. Development of a dual beamlet monitor system for negative ion beam measurements. Rev Sci Instrum 2018; 89:123303. [PMID: 30599604 DOI: 10.1063/1.5056260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 11/25/2018] [Indexed: 06/09/2023]
Abstract
To evaluate negative ion beam properties, a dual beamlet monitor system has been developed. The dual beamlet monitor system has two diagnostics in one hexagonal box. One diagnostic is a "fast beamlet monitor" for measuring the time evolution of beamlet current profiles with the time resolution of up to 25 MHz. The other diagnostic is a "pepper-pot-type phase space analyzer," which is applied for the evaluation of a phase space structure of the negative ion beamlet. The dual beamlet monitor system is applied to the measurement of the beamlet in the Neutral Beam Test Stand at National Institute for Fusion Science (NIFS-NBTS), in which the beam accelerator is almost identical to those of working beam injectors in the large helical device. It is demonstrated that the overlapping components from the neighboring beamlet can be eliminated, and the phase space structure can be obtained for the single beamlet.
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Affiliation(s)
- Y Haba
- Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
| | - K Nagaoka
- Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
| | - K Tsumori
- National Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - M Kisaki
- National Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - H Nakano
- National Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - K Ikeda
- National Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - Y Fujiwara
- National Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - S Kamio
- National Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - S Yoshimura
- National Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - M Osakabe
- National Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
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12
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Kawai S, Mukai Y, Yakabe D, Nagaoka K, Chishaki A, Tsutsui H. P2880Circumferential conduction delay within the pulmonary veins (PV) rather than the PV-LA conduction delay has a key role in the onset of atrial fibrillation - A quantitative analysis. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- S Kawai
- Kyushu University Hospital, cardiology, Fukuoka, Japan
| | - Y Mukai
- Kyushu University Hospital, cardiology, Fukuoka, Japan
| | - D Yakabe
- Kyushu University Hospital, cardiology, Fukuoka, Japan
| | - K Nagaoka
- Kyushu University Hospital, cardiology, Fukuoka, Japan
| | - A Chishaki
- Kyushu University Hospital, cardiology, Fukuoka, Japan
| | - H Tsutsui
- Kyushu University Hospital, cardiology, Fukuoka, Japan
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13
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Qasimi MI, Nagaoka K, Watanabe G. Feeding of phytosterols reduced testosterone production by modulating GnRH and GnIH expression in the brain and testes of male Japanese quail (Coturnix coturnix japonica). Poult Sci 2018; 97:1066-1072. [DOI: 10.3382/ps/pex370] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 11/14/2017] [Indexed: 11/20/2022] Open
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14
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Geng S, Tsumori K, Nakano H, Kisaki M, Ikeda K, Osakabe M, Nagaoka K, Takeiri Y, Shibuya M. Response of H− ions to extraction field in a negative hydrogen ion source. Fusion Engineering and Design 2017. [DOI: 10.1016/j.fusengdes.2017.02.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Nakamura Y, Tamura N, Kobayashi M, Yoshimura S, Suzuki C, Yoshinuma M, Goto M, Motojima G, Nagaoka K, Tanaka K, Sakamoto R, Peterson B, Ida K, Osakabe M, Morisaki T. A comprehensive study on impurity behavior in LHD long pulse discharges. Nuclear Materials and Energy 2017. [DOI: 10.1016/j.nme.2016.11.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Osakabe M, Takeiri Y, Morisaki T, Motojima G, Ogawa K, Isobe M, Tanaka M, Murakami S, Shimizu A, Nagaoka K, Takahashi H, Nagasaki K, Takahashi H, Fujita T, Oya Y, Sakamoto M, Ueda Y, Akiyama T, Kasahara H, Sakakibara S, Sakamoto R, Tokitani M, Yamada H, Yokoyama M, Yoshimura Y. Current Status of Large Helical Device and Its Prospect for Deuterium Experiment. Fusion Science and Technology 2017. [DOI: 10.1080/15361055.2017.1335145] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- M. Osakabe
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - Y. Takeiri
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - T. Morisaki
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - G. Motojima
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - K. Ogawa
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - M. Isobe
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - M. Tanaka
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - S. Murakami
- Kyoto University, Department of Mechanical Engineering and Science, Kyoto 615-8540, Japan
| | - A. Shimizu
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - H. Takahashi
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - K. Nagasaki
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Kyoto 611-0011, Japan
| | - H. Takahashi
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - T. Fujita
- Nagoya University, Department of Energy Engineering and Science, Graduate School of Engineering, Furo-cho, Chikusa-ku, Nagoya 464-8093, Japan
| | - Y. Oya
- Shizuoka University, Radioscience Research Laboratory, Faculty of Science, 836, Ohya, Suruga-ku, Shizuoka 422-8529, Japan
| | - M. Sakamoto
- University of Tsukuba, Plasma Research Center, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Ueda
- Osaka University, Graduate School of Engineering, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - T. Akiyama
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - H. Kasahara
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - S Sakakibara
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - R. Sakamoto
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - M. Tokitani
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - H. Yamada
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - M. Yokoyama
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - Y. Yoshimura
- National Institute for Fusion Science, Natural Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, Japan
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17
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Yamamoto Y, Nagaoka K, Kamite Y, Watanabe G, Allen T, Stansfield F, Taya K. Different origins of two corpora lutea recovered from a pregnant African elephant (Loxodonta africana
). Reprod Domest Anim 2017; 52:1138-1141. [DOI: 10.1111/rda.13010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 05/23/2017] [Indexed: 11/29/2022]
Affiliation(s)
- Y Yamamoto
- Department of Veterinary Medicine; Tokyo University of Agriculture and Technology; Tokyo Japan
| | - K Nagaoka
- Department of Veterinary Medicine; Tokyo University of Agriculture and Technology; Tokyo Japan
| | - Y Kamite
- Department of Veterinary Medicine; Tokyo University of Agriculture and Technology; Tokyo Japan
| | - G Watanabe
- Department of Veterinary Medicine; Tokyo University of Agriculture and Technology; Tokyo Japan
| | - T Allen
- The Elephant Research Unit; Save Valley Conservancy Zimbabwe
- The Paul Mellon Laboratory; Suffolk UK
| | - F Stansfield
- The Elephant Research Unit; Save Valley Conservancy Zimbabwe
- Department of Production Animal Studies; Faculty of Veterinary Science; University of Pretoria; Onderstepoort South Africa
| | - K Taya
- Department of Veterinary Medicine; Tokyo University of Agriculture and Technology; Tokyo Japan
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18
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Kumazawa R, Mutoh T, Saito K, Seki T, Kasahara H, Tokitani M, Masuzaki S, Ashikawa N, Nakamura Y, Kubo S, Shimozuma T, Yoshimura Y, Igami H, Takahashi H, Takeiri Y, Tsumori K, Osakabe M, Ikeda K, Nagaoka K, Kaneko O, Goto M, Sato K, Chikaraishi H, Ida K, Nagayama Y, Zhao Y, Kwak JG, Yoon JS. Progress in Steady-State Plasma Operation Using ICRF Heating on LHD. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a10839] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- R. Kumazawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Mutoh
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Saito
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Seki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Kasahara
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Tokitani
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Masuzaki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - N. Ashikawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Nakamura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Kubo
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Shimozuma
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Yoshimura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Igami
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Takahashi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Takeiri
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Tsumori
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Osakabe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ikeda
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - O. Kaneko
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Goto
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Sato
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Chikaraishi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ida
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Nagayama
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Zhao
- Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China
| | - J. G. Kwak
- Korea Advanced Energy Research Institute, 150 Deogjin-dong, Yuseong-gu, Daejeon, Republic of Korea
| | - J. S. Yoon
- Korea Advanced Energy Research Institute, 150 Deogjin-dong, Yuseong-gu, Daejeon, Republic of Korea
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19
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Shimozuma T, Yokoyama M, Ida K, Takeiri Y, Kubo S, Murakami S, Wakasa A, Idei H, Yoshimura Y, Notake T, Inagaki S, Tamura N, Toi K, Ohyabu N, Osakabe M, Ikeda K, Tsumori K, Oka Y, Nagaoka K, Kaneko O, Yamada I, Narihara K, Nagayam Y, Muto S, Tanaka K, Tokuzawa T, Morita S, Goto M, Yoshinuma M, Funaba H, Morisaki T, Watanabe KY, Miyazawa J, Mutoh T, Watari T, Ohkubo K. Improvement of Plasma Core Confinement Via Electron-Root Realization by Strongly Focused ECRH in LHD: Core Electron-Root Confinement. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a10791] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Shimozuma
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Yokoyama
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ida
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Takeiri
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Kubo
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Murakami
- Kyoto University, Department of Nuclear Engineering, Kyoto 606-8501, Japan
| | - A. Wakasa
- Kyoto University, Department of Nuclear Engineering, Kyoto 606-8501, Japan
| | - H. Idei
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
| | - Y. Yoshimura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Notake
- RIKEN, Tera-Photonics Laboratory, Aoba Sendai-City, Miyagi 980-0845, Japan
| | - S. Inagaki
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
| | - N. Tamura
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
| | - K. Toi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - N. Ohyabu
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Osakabe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ikeda
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Tsumori
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Oka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - O. Kaneko
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - I. Yamada
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Narihara
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Nagayam
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Muto
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Tanaka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Tokuzawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Morita
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Goto
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Yoshinuma
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Funaba
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Morisaki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Y. Watanabe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - J. Miyazawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Mutoh
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Watari
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ohkubo
- National Institute for Fusion Science, Toki 509-5292, Japan
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20
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Isobe M, Nagaoka K, Yoshimura Y, Minami T, Akiyama T, Suzuki C, Nishimura S, Nakamura K, Shimizu A, Takahashi C, Toi K, Matsuoka K, Okamura S, Matsushita H, Murakami S. Reheat Mode Discharges in Search of Attainable High Stored Energy and Density Limit of Compact Helical System. Fusion Science and Technology 2017. [DOI: 10.13182/fst06-a1240] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Isobe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Yoshimura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Minami
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Akiyama
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - C. Suzuki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Nishimura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Nakamura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - A. Shimizu
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - C. Takahashi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Toi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Matsuoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Okamura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Matsushita
- The Graduate University for Advanced Studies, Toki 509-5292, Japan
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21
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Takeiri Y, Kaneko O, Tsumori K, Osakabe M, Ikeda K, Nagaoka K, Nakano H, Asano E, Kondo T, Sato M, Shibuya M, Komada S. High Performance of Neutral Beam Injectors for Extension of LHD Operational Regime. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a10834] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Takeiri
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - O. Kaneko
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Tsumori
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Osakabe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ikeda
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Nakano
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - E. Asano
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Kondo
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Sato
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Shibuya
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Komada
- National Institute for Fusion Science, Toki 509-5292, Japan
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22
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Yoshinuma M, Ida K, Yokoyama M, Osakabe M, Nagaoka K, Morita S, Goto M, Tamura N, Suzuki C, Yoshimura S, Funaba H, Takeiri Y, Ikeda K, Tsumori K, Kaneko O. Spontaneous Toroidal Flow and Impurity Hole in the High Ion Temperature Plasma on LHD. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a10797] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Yoshinuma
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - K. Ida
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - M. Yokoyama
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - M. Osakabe
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - S. Morita
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - M. Goto
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - N. Tamura
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - C. Suzuki
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - S. Yoshimura
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - H. Funaba
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - Y. Takeiri
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - K. Ikeda
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - K. Tsumori
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - O. Kaneko
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
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23
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Tsumori K, Takeiri Y, Kaneko O, Osakabe M, Ando A, Ikeda K, Nagaoka K, Nakano H, Asano E, Shibuya M, Sato M, Kondo T, Komada M. Research and Development Activities on Negative Ion Sources. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a10835] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- K. Tsumori
- National Institute for Fusion Science, 322-6 Orosh-cho, Toki-city, Gifu 509-5292, Japan
| | - Y. Takeiri
- National Institute for Fusion Science, 322-6 Orosh-cho, Toki-city, Gifu 509-5292, Japan
| | - O. Kaneko
- National Institute for Fusion Science, 322-6 Orosh-cho, Toki-city, Gifu 509-5292, Japan
| | - M. Osakabe
- National Institute for Fusion Science, 322-6 Orosh-cho, Toki-city, Gifu 509-5292, Japan
| | - A. Ando
- Tohoku University, Department of Electrical Engineering, 6-6-05 Aoba-yama, Aoba, Sendai 980-8579, Japan
| | - K. Ikeda
- National Institute for Fusion Science, 322-6 Orosh-cho, Toki-city, Gifu 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, 322-6 Orosh-cho, Toki-city, Gifu 509-5292, Japan
| | - H. Nakano
- National Institute for Fusion Science, 322-6 Orosh-cho, Toki-city, Gifu 509-5292, Japan
| | - E. Asano
- National Institute for Fusion Science, 322-6 Orosh-cho, Toki-city, Gifu 509-5292, Japan
| | - M. Shibuya
- National Institute for Fusion Science, 322-6 Orosh-cho, Toki-city, Gifu 509-5292, Japan
| | - M. Sato
- National Institute for Fusion Science, 322-6 Orosh-cho, Toki-city, Gifu 509-5292, Japan
| | - T. Kondo
- National Institute for Fusion Science, 322-6 Orosh-cho, Toki-city, Gifu 509-5292, Japan
| | - M. Komada
- National Institute for Fusion Science, 322-6 Orosh-cho, Toki-city, Gifu 509-5292, Japan
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24
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Osakabe M, Isobe M, Murakami S, Kobayashi S, Saito K, Kumazawa R, Mutoh T, Ozaki T, Nishiura M, Veshchev E, Seki T, Takeiri Y, Kaneko O, Nagaoka K, Tokuzawa T, Ogawa K, Toi K, Yamamoto S, Sasao M, Watanabe T. Fast-Ion Confinement Studies on LHD. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a10800] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Osakabe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Isobe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Murakami
- Kyoto University, Department of Nuclear Engineering, Kyoto 606-8501, Japan
| | - S. Kobayashi
- Institute of Advanced Energy, Kyoto University, Gokashou, Uji 611-0011, Japan
| | - K. Saito
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - R. Kumazawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Mutoh
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Ozaki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Nishiura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - E. Veshchev
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Seki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Takeiri
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - O. Kaneko
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Tokuzawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ogawa
- Nagoya University, Department of Energy Science and Engineering, Nagoya 464-8603, Japan
| | - K. Toi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Yamamoto
- Institute of Advanced Energy, Kyoto University, Gokashou, Uji 611-0011, Japan
| | - M. Sasao
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Watanabe
- National Institute for Fusion Science, Toki 509-5292, Japan
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25
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Nagaoka K, Takeiri Y, Morita S, Ida K, Yokoyama M, Yoshinuma M, Funaba H, Murakami S, Minami T, Tanaka K, Ido T, Shimizu A, Ikeda K, Osakabe M, Tsumori K, Kaneko O. Ion Heating Experiments and Improvement of Ion Heat Transport in LHD. Fusion Science and Technology 2017. [DOI: 10.13182/fst58-46] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- K. Nagaoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Takeiri
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Morita
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ida
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Yokoyama
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Yoshinuma
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Funaba
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Murakami
- Kyoto University, Department of Nuclear Engineering, Kyoto 606-8501, Japan
| | - T. Minami
- Institute of Advanced Energy, Kyoto University, Uji 611-0011, Japan
| | - K. Tanaka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Ido
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - A. Shimizu
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ikeda
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Osakabe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Tsumori
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - O. Kaneko
- National Institute for Fusion Science, Toki 509-5292, Japan
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26
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Isobe M, Osakabe M, Ozaki T, Nishiura M, Goncharov PV, Veshchev E, Ogawa K, Nagaoka K, Saito K, Murakami S, Saida T, Sasao M, Toi K. Fast-Particle Diagnostics on LHD. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a10828] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Isobe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Osakabe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Ozaki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Nishiura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | | | - E. Veshchev
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ogawa
- Nagoya University, Department of Energy Science and Engineering, Nagoya 464-8603, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Saito
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Murakami
- Kyoto University, Department of Nuclear Engineering, Kyoto 606-8501, Japan
| | - T. Saida
- Tohoku University, Department of Quantum Energy Science, Sendai 980-8579, Japan
| | - M. Sasao
- Tohoku University, Department of Quantum Energy Science, Sendai 980-8579, Japan
| | - K. Toi
- National Institute for Fusion Science, Toki 509-5292, Japan
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27
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Kaneko O, Takeiri Y, Tsumori K, Osakabe M, Ikeda K, Nagaoka K, Nakano H. Plasma Initiation by Neutral Beam Injection. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a10836] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- O. Kaneko
- National Institute for Fusion Science, 322-6 Oroshi, Toki 509-5292, Japan
| | - Y. Takeiri
- National Institute for Fusion Science, 322-6 Oroshi, Toki 509-5292, Japan
| | - K. Tsumori
- National Institute for Fusion Science, 322-6 Oroshi, Toki 509-5292, Japan
| | - M. Osakabe
- National Institute for Fusion Science, 322-6 Oroshi, Toki 509-5292, Japan
| | - K. Ikeda
- National Institute for Fusion Science, 322-6 Oroshi, Toki 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, 322-6 Oroshi, Toki 509-5292, Japan
| | - H. Nakano
- National Institute for Fusion Science, 322-6 Oroshi, Toki 509-5292, Japan
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28
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Takeiri Y, Kubo S, Shimozuma T, Yokoyama M, Osakabe M, Ikeda K, Tsumori K, Oka Y, Nagaoka K, Yoshimura Y, Ida K, Funaba H, Murakami S, Tanaka K, Peterson BJ, Yamada I, Ohyabu N, Ohkubo K, Kaneko O, Komori A. Electron ITB Formation with Combination of NBI and ECH in LHD. Fusion Science and Technology 2017. [DOI: 10.13182/fst04-a546] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Takeiri
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Kubo
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Shimozuma
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Yokoyama
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Osakabe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ikeda
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Tsumori
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Oka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Yoshimura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ida
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Funaba
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Murakami
- Kyoto University, Department of Nuclear Engineering, Kyoto 606-8501, Japan
| | - K. Tanaka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - B. J. Peterson
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - I. Yamada
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - N. Ohyabu
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ohkubo
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - O. Kaneko
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - A. Komori
- National Institute for Fusion Science, Toki 509-5292, Japan
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29
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Seki T, Mutoh T, Kumazawa R, Saito K, Nakamura Y, Sakamoto M, Watanabe T, Kubo S, Shimozuma T, Yoshimura Y, Igami H, Ohkubo K, Takeiri Y, Oka Y, Tsumori K, Osakabe M, Ikeda K, Nagaoka K, Kaneko O, Miyazawa J, Morita S, Narihara K, Shoji M, Masuzaki S, Goto M, Morisaki T, Peterson BJ, Sato K, Tokuzawa T, Ashikawa N, Nishimura K, Funaba H, Chikaraishi H, Takeuchi N, Notake T, Ogawa H, Torii Y, Shimpo F, Nomura G, Yokota M, Takahashi C, Kato A, Takase Y, Kasahara H, Ichimura M, Higaki H, Zhao YP, Kwak JG, Yamada H, Kawahata K, Ohyabu N, Ida K, Nagayama Y, Noda N, Watari T, Komori A, Sudo S, Motojima O. Study of Long-Pulse Plasma Experiment Using ICRF Heating in LHD. Fusion Science and Technology 2017. [DOI: 10.13182/fst06-a1234] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Seki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Mutoh
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - R. Kumazawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Saito
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Nakamura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | | | - T. Watanabe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Kubo
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Shimozuma
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Yoshimura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Igami
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ohkubo
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Takeiri
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Oka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Tsumori
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Osakabe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ikeda
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - O. Kaneko
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - J. Miyazawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Morita
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Narihara
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Shoji
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Masuzaki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Goto
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Morisaki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - B. J. Peterson
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Sato
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Tokuzawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - N. Ashikawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Nishimura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Funaba
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Chikaraishi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - N. Takeuchi
- Nagoya University, Faculty of Engineering, Nagoya 464-8601, Japan
| | - T. Notake
- Nagoya University, Faculty of Engineering, Nagoya 464-8601, Japan
| | - H. Ogawa
- Graduate University for Advanced Studies, Hayama 240-0162, Japan
| | - Y. Torii
- Kyoto University, Institute of Advanced Energy, Uji 611-0011, Japan
| | - F. Shimpo
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - G. Nomura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Yokota
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - C. Takahashi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - A. Kato
- National Institute for Fusion Science, Toki 509-5292, Japan
| | | | | | | | - H. Higaki
- University of Tsukuba, Tsukuba, Japan
| | - Y. P. Zhao
- Institute of Plasma Physics, Academia Sinica, Hefei 230031, P.R. China
| | - J. G. Kwak
- Korea Atomic Energy Research Institute, Daejeon 305-600, Korea Rep
| | - H. Yamada
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Kawahata
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - N. Ohyabu
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ida
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Nagayama
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - N. Noda
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Watari
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - A. Komori
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Sudo
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - O. Motojima
- National Institute for Fusion Science, Toki 509-5292, Japan
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30
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Yoshinuma M, Ida K, Yokoyama M, Osakabe M, Nagaoka K. Charge-Exchange Spectroscopy with Pitch-Controlled Double-Slit Fiber Bundle on LHD. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a10823] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Yoshinuma
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - K. Ida
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - M. Yokoyama
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - M. Osakabe
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
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31
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Yamada H, Kawahata K, Mutoh T, Ohyabu N, Takeiri Y, Imagawa S, Ida K, Mito T, Nagayama Y, Shimozuma T, Watanabe KY, Kobayashi M, Kumazawa R, Masuzaki S, Morisaki T, Miyazawa J, Nagaoka K, Narushima Y, Sakakibara S, Sakamoto R, Toi K, Yokoyama M, Kaneko O, Komori A, Motojima O. Progress in the Integrated Development of the Helical System. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a10789] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. Yamada
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Kawahata
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Mutoh
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - N. Ohyabu
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Takeiri
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Imagawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Ida
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Mito
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Nagayama
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Shimozuma
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Y. Watanabe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Kobayashi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - R. Kumazawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Masuzaki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Morisaki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - J. Miyazawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y. Narushima
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Sakakibara
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - R. Sakamoto
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Toi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Yokoyama
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - O. Kaneko
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - A. Komori
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - O. Motojima
- National Institute for Fusion Science, Toki 509-5292, Japan
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32
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Toi K, Isobe M, Osakabe M, Watanabe F, Ogawa K, Yamamoto S, Nakajima N, Spong DA, Ida K, Ido T, Ito T, Morita S, Nagaoka K, Narihara K, Nishiura M, Ohdachi S, Sakakibara S, Shimizu A, Tanaka K, Todo Y, Tokuzawa T, Weller A. MHD Modes Destabilized by Energetic Ions on LHD. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a10805] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- K. Toi
- National Institute for Fusion Science, Toki, Japan
| | - M. Isobe
- National Institute for Fusion Science, Toki, Japan
| | - M. Osakabe
- National Institute for Fusion Science, Toki, Japan
| | - F. Watanabe
- Department of Energy Engineering and Science, Nagoya University, Nagoya, Japan
| | - K. Ogawa
- Department of Energy Engineering and Science, Nagoya University, Nagoya, Japan
| | - S. Yamamoto
- Institute of Advanced Energy, Kyoto University, Uji, Japan
| | - N. Nakajima
- National Institute for Fusion Science, Toki, Japan
| | - D. A. Spong
- Oak Ridge National Laboratory, Oak Ridge, Tennessee
| | - K. Ida
- National Institute for Fusion Science, Toki, Japan
| | - T. Ido
- National Institute for Fusion Science, Toki, Japan
| | - T. Ito
- Department of Energy Engineering and Science, Nagoya University, Nagoya, Japan
| | - S. Morita
- National Institute for Fusion Science, Toki, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, Toki, Japan
| | - K. Narihara
- National Institute for Fusion Science, Toki, Japan
| | - M. Nishiura
- National Institute for Fusion Science, Toki, Japan
| | - S. Ohdachi
- National Institute for Fusion Science, Toki, Japan
| | | | - A. Shimizu
- National Institute for Fusion Science, Toki, Japan
| | - K. Tanaka
- National Institute for Fusion Science, Toki, Japan
| | - Y. Todo
- National Institute for Fusion Science, Toki, Japan
| | - T. Tokuzawa
- National Institute for Fusion Science, Toki, Japan
| | - A. Weller
- Max-Planck Institut für Plasma Physik, Greifswald, Germany
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33
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Yoshimura Y, Ferrando-Margalet S, Isobe M, Suzuki C, Shimizu A, Akiyama T, Takahashi C, Nagaoka K, Nishimura S, Minami T, Matsuoka K, Okamura S, Igami H, Kubo S, Shimozuma T, Notake T, Mutoh T, Nagasaki K. Experimental Observations of O-X-B Heating of Overdense Plasmas in CHS. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1500] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Yoshimura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | | | - M. Isobe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - C. Suzuki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - A. Shimizu
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Akiyama
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - C. Takahashi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Nishimura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Minami
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Matsuoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Okamura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Igami
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Kubo
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Shimozuma
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Notake
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Mutoh
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Nagasaki
- Kyoto University, Institute of Advanced Energy, Uji 611-0011, Japan
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34
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Motojima O, Yamada H, Komori A, Watanabe KY, Mutoh T, Takeiri Y, Ida K, Akiyama T, Asakura N, Ashikawa N, Chikaraishi H, Cooper WA, Emoto M, Fujita T, Fujiwara M, Funaba H, Goncharov P, Goto M, Hamada Y, Higashijima S, Hino T, Hoshino M, Ichimura M, Idei H, Ido T, Ikeda K, Imagawa S, Inagaki S, Isayama A, Isobe M, Itoh T, Itoh K, Kado S, Kalinina D, Kaneba T, Kaneko O, Kato D, Kato T, Kawahata K, Kawashima H, Kawazome H, Kobuchi T, Kondo K, Kubo S, Kumazawa R, Lyon JF, Maekawa R, Mase A, Masuzaki S, Mito T, Matsuoka K, Miura Y, Miyazawa J, More R, Morisaki T, Morita S, Murakami I, Murakami S, Mutoh S, Nagaoka K, Nagasaki K, Nagayama Y, Nakamura Y, Nakanishi H, Narihara K, Narushima Y, Nishimura H, Nishimura K, Nishiura M, Nishizawa A, Noda N, Notake T, Nozato H, Ohdachi S, Ohkubo K, Ohyabu N, Oyama N, Oka Y, Okada H, Osakabe M, Ozaki T, Peterson BJ, Sagara A, Saida T, Saito K, Sakakibara S, Sakamoto M, Sakamoto R, Sasao M, Sato K, Seki T, Shimozuma T, Shoji M, Sudo S, Takagi S, Takahashi Y, Takase Y, Takenaga H, Takeuchi N, Tamura N, Tanaka K, Tanaka M, Toi K, Takahata K, Tokuzawa T, Torii Y, Tsumori K, Watanabe F, Watanabe M, Watanabe T, Watari T, Yamada I, Yamada S, Yamaguchi T, Yamamoto S, Yamazaki K, Yanagi N, Yokoyama M, Yoshida N, Yoshimura S, Yoshimura Y, Yoshinuma M. Review on the Progress of the LHD Experiment. Fusion Science and Technology 2017. [DOI: 10.13182/fst04-a535] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- O. Motojima
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - H. Yamada
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - A. Komori
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Y. Watanabe
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Mutoh
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - Y. Takeiri
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Ida
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Akiyama
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - N. Asakura
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - N. Ashikawa
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - H. Chikaraishi
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - W. A. Cooper
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - M. Emoto
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Fujita
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - M. Fujiwara
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - H. Funaba
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - P. Goncharov
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - M. Goto
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - Y. Hamada
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Higashijima
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Hino
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - M. Hoshino
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - M. Ichimura
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - H. Idei
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Ido
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Ikeda
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Imagawa
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Inagaki
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - A. Isayama
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - M. Isobe
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Itoh
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Itoh
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Kado
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - D. Kalinina
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Kaneba
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - O. Kaneko
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - D. Kato
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Kato
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Kawahata
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - H. Kawashima
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - H. Kawazome
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Kobuchi
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Kondo
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Kubo
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - R. Kumazawa
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - J. F. Lyon
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - R. Maekawa
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - A. Mase
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Masuzaki
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Mito
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Matsuoka
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - Y. Miura
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - J. Miyazawa
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - R. More
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Morisaki
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Morita
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - I. Murakami
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Murakami
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Mutoh
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Nagasaki
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - Y. Nagayama
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - Y. Nakamura
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - H. Nakanishi
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Narihara
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - Y. Narushima
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - H. Nishimura
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Nishimura
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - M. Nishiura
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - A. Nishizawa
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - N. Noda
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Notake
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - H. Nozato
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Ohdachi
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Ohkubo
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - N. Ohyabu
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - N. Oyama
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - Y. Oka
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - H. Okada
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - M. Osakabe
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Ozaki
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - B. J. Peterson
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - A. Sagara
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Saida
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Saito
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Sakakibara
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - M. Sakamoto
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - R. Sakamoto
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - M. Sasao
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Sato
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Seki
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Shimozuma
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - M. Shoji
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Sudo
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Takagi
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - Y. Takahashi
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - Y. Takase
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - H. Takenaga
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - N. Takeuchi
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - N. Tamura
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Tanaka
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - M. Tanaka
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Toi
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Takahata
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Tokuzawa
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - Y. Torii
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Tsumori
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - F. Watanabe
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - M. Watanabe
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Watanabe
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Watari
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - I. Yamada
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Yamada
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - T. Yamaguchi
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Yamamoto
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - K. Yamazaki
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - N. Yanagi
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - M. Yokoyama
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - N. Yoshida
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - S. Yoshimura
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - Y. Yoshimura
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
| | - M. Yoshinuma
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu-ken 509-5292, Japan
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Yoshimura Y, Akiyama T, Isobe M, Shimizu A, Suzuki C, Takahashi C, Nagaoka K, Nishimura S, Minami T, Matsuoka K, Okamura S, Kubo S, Shimozuma T, Igami H, Notake T, Mutoh T. Optimization of Electron Cyclotron Current Drive in the Magnetic Field Configuration of CHS. Fusion Science and Technology 2017. [DOI: 10.13182/fst08-a1652] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Yoshimura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Akiyama
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Isobe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - A. Shimizu
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - C. Suzuki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - C. Takahashi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Nishimura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Minami
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Matsuoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Okamura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Kubo
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Shimozuma
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Igami
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Notake
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Mutoh
- National Institute for Fusion Science, Toki 509-5292, Japan
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36
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Du XD, Toi K, Ohdachi S, Watanabe KY, Takahashi H, Yoshimura Y, Osakabe M, Seki R, Nicolas T, Tsuchiya H, Nagaoka K, Ogawa K, Tanaka K, Isobe M, Yokoyama M, Yoshinuma M, Kubo S, Sakakibara S, Bando T, Ido T, Ozaki T, Suzuki Y, Takemura Y. Suppression of Trapped Energetic Ions Driven Resistive Interchange Modes with Electron Cyclotron Heating in a Helical Plasma. Phys Rev Lett 2017; 118:125001. [PMID: 28388197 DOI: 10.1103/physrevlett.118.125001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Indexed: 06/07/2023]
Abstract
The resistive interchange mode destabilized by the resonant interaction with the trapped energetic ions is fully suppressed when the injected power of electron cyclotron heating exceeds a certain threshold. It is shown for the first time that the complete stabilization of the energetic-particle-driven mode without relaxing the energetic particle (EP) pressure gradient is possible by reducing the radial width of the eigenmodes δ_{w}, especially when δ_{w} narrows to a small enough value relative to the finite orbit width of EP.
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Affiliation(s)
- X D Du
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - K Toi
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - S Ohdachi
- National Institute for Fusion Science, 509-5292 Toki, Japan
- Department of Fusion Science, The Graduate University for Advanced Studies, 509-5292 Toki, Japan
| | - K Y Watanabe
- National Institute for Fusion Science, 509-5292 Toki, Japan
- Department of Fusion Science, The Graduate University for Advanced Studies, 509-5292 Toki, Japan
| | - H Takahashi
- National Institute for Fusion Science, 509-5292 Toki, Japan
- Department of Fusion Science, The Graduate University for Advanced Studies, 509-5292 Toki, Japan
| | - Y Yoshimura
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - M Osakabe
- National Institute for Fusion Science, 509-5292 Toki, Japan
- Department of Fusion Science, The Graduate University for Advanced Studies, 509-5292 Toki, Japan
| | - R Seki
- National Institute for Fusion Science, 509-5292 Toki, Japan
- Department of Fusion Science, The Graduate University for Advanced Studies, 509-5292 Toki, Japan
| | - T Nicolas
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - H Tsuchiya
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - K Nagaoka
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - K Ogawa
- National Institute for Fusion Science, 509-5292 Toki, Japan
- Department of Fusion Science, The Graduate University for Advanced Studies, 509-5292 Toki, Japan
| | - K Tanaka
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - M Isobe
- National Institute for Fusion Science, 509-5292 Toki, Japan
- Department of Fusion Science, The Graduate University for Advanced Studies, 509-5292 Toki, Japan
| | - M Yokoyama
- National Institute for Fusion Science, 509-5292 Toki, Japan
- Department of Fusion Science, The Graduate University for Advanced Studies, 509-5292 Toki, Japan
| | - M Yoshinuma
- National Institute for Fusion Science, 509-5292 Toki, Japan
- Department of Fusion Science, The Graduate University for Advanced Studies, 509-5292 Toki, Japan
| | - S Kubo
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - S Sakakibara
- National Institute for Fusion Science, 509-5292 Toki, Japan
- Department of Fusion Science, The Graduate University for Advanced Studies, 509-5292 Toki, Japan
| | - T Bando
- Department of Fusion Science, The Graduate University for Advanced Studies, 509-5292 Toki, Japan
| | - T Ido
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - T Ozaki
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - Y Suzuki
- National Institute for Fusion Science, 509-5292 Toki, Japan
- Department of Fusion Science, The Graduate University for Advanced Studies, 509-5292 Toki, Japan
| | - Y Takemura
- National Institute for Fusion Science, 509-5292 Toki, Japan
- Department of Fusion Science, The Graduate University for Advanced Studies, 509-5292 Toki, Japan
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37
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Mutoh* T, Nagaoka K, Takahashi H, Kasahara H, Osakabe M, Kubo S, Shimozuma T, Yoshimura Y, Tsumori K, Seki T, Saito K, Igami H, Nakano H, Ikeda K, Kisaki M, Seki R, Kamio S, Ii T, Nakamura Y, Takeiri Y, Kaneko O. High Power Heating and Steady State Operation in the Large Helical Device. Fusion Science and Technology 2017. [DOI: 10.13182/fst15-120] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Mutoh*
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - K. Nagaoka
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - H. Takahashi
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - H. Kasahara
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - M. Osakabe
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - S. Kubo
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - T. Shimozuma
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - Y. Yoshimura
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - K. Tsumori
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - T. Seki
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - K. Saito
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - H. Igami
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - H. Nakano
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - K. Ikeda
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - M. Kisaki
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - R. Seki
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - S. Kamio
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - T. Ii
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - Y. Nakamura
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - Y. Takeiri
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
| | - O. Kaneko
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, 509-5292, Japan
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Tokuzawa T, Kisaki M, Nagaoka K, Tsumori K, Ito Y, Ikeda K, Nakano H, Osakabe M, Takeiri Y, Kaneko O. Upgraded millimeter-wave interferometer for measuring the electron density during the beam extraction in the negative ion source. Rev Sci Instrum 2016; 87:11E105. [PMID: 27910614 DOI: 10.1063/1.4959841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The upgraded millimeter-wave interferometer with the frequency of 70 GHz is installed on a large-scaled negative ion source. Measurable line-averaged electron density is from 2 × 1015 to 3 × 1018 m-3 in front of the plasma grid. Several improvements such as the change to shorter wavelength probing with low noise, the installation of special ordered horn antenna, the signal modulation for a high accuracy digital phase detection, the insertion of insulator, and so on, are carried out for the measurement during the beam extraction by applying high voltage. The line-averaged electron density is successfully measured and it is found that it increases linearly with the arc power and drops suddenly at the beam extraction.
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Affiliation(s)
- T Tokuzawa
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - M Kisaki
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - K Nagaoka
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - K Tsumori
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - Y Ito
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - K Ikeda
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - H Nakano
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - M Osakabe
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - Y Takeiri
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - O Kaneko
- National Institutes of Natural Sciences, 4-3-13 Toranomon, Minato-ku, Tokyo 105-0001, Japan
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39
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Zhang H, Nagaoka K, Usuda K, Nozawa K, Taya K, Yoshida M, Watanabe G. Estrogenic Compounds Impair Primordial Follicle Formation by Inhibiting the Expression of Proapoptotic Hrk in Neonatal Rat Ovary. Biol Reprod 2016; 95:78. [DOI: 10.1095/biolreprod.116.141309] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 07/25/2016] [Indexed: 11/01/2022] Open
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40
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Geng S, Tsumori K, Nakano H, Kisaki M, Ikeda K, Osakabe M, Nagaoka K, Takeiri Y, Shibuya M, Kaneko O. Charged particle flows in the beam extraction region of a negative ion source for NBI. Rev Sci Instrum 2016; 87:02B103. [PMID: 26931985 DOI: 10.1063/1.4931796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Experiments by a four-pin probe and photodetachment technique were carried out to investigate the charged particle flows in the beam extraction region of a negative hydrogen ion source for neutral beam injector. Electron and positive ion flows were obtained from the polar distribution of the probe saturation current. Negative hydrogen ion flow velocity and temperature were obtained by comparing the recovery times of the photodetachment signals at opposite probe tips. Electron and positive ions flows are dominated by crossed field drift and ambipolar diffusion. Negative hydrogen ion temperature is evaluated to be 0.12 eV.
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Affiliation(s)
- S Geng
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - K Tsumori
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - H Nakano
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - M Kisaki
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - K Ikeda
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - M Osakabe
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - K Nagaoka
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - Y Takeiri
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - M Shibuya
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - O Kaneko
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi, Toki, Gifu 509-5292, Japan
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41
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Kisaki M, Ikeda K, Osakabe M, Tsumori K, Nakano H, Geng S, Nagaoka K, Kaneko O, Takeiri Y. Improvement of accelerator of negative ion source on the Large Helical Device. Rev Sci Instrum 2016; 87:02B321. [PMID: 26932049 DOI: 10.1063/1.4936249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
To improve the performance of negative-ion based neutral beam injection on the Large Helical Device, the accelerator was modified on the basis of numerical investigations. A field limiting ring was installed on the upper side of a grounded grid (GG) support and a multi-slot GG was adopted instead of a multi-aperture GG. As a result, the voltage holding capability is improved and the heat load on the GG decreases by 40%. In addition, the arc efficiency is improved significantly only by replacing the GG.
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Affiliation(s)
- M Kisaki
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - K Ikeda
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - M Osakabe
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - K Tsumori
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - H Nakano
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - S Geng
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - K Nagaoka
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - O Kaneko
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - Y Takeiri
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
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42
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Ikeda K, Wünderlich D, Fantz U, Heinemann B, Kisaki M, Nagaoka K, Nakano H, Osakabe M, Tsumori K, Geng S, Kaneko O, Takeiri Y. Installation of spectrally selective imaging system in RF negative ion source. Rev Sci Instrum 2016; 87:02B113. [PMID: 26931995 DOI: 10.1063/1.4932987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A spectrally selective imaging system has been installed in the RF negative ion source in the International Thermonuclear Experimental Reactor-relevant negative ion beam test facility ELISE (Extraction from a Large Ion Source Experiment) to investigate distribution of hydrogen Balmer-α emission (Hα) close to the production surface of hydrogen negative ion. We selected a GigE vision camera coupled with an optical band-path filter, which can be controlled remotely using high speed network connection. A distribution of Hα emission near the bias plate has been clearly observed. The same time trend on Hα intensities measured by the imaging diagnostic and the optical emission spectroscopy is confirmed.
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Affiliation(s)
- K Ikeda
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - D Wünderlich
- Max-Planck-Institut für Plasmaphysik, Boltzmannstraße 2, 85748 Garching, Germany
| | - U Fantz
- Max-Planck-Institut für Plasmaphysik, Boltzmannstraße 2, 85748 Garching, Germany
| | - B Heinemann
- Max-Planck-Institut für Plasmaphysik, Boltzmannstraße 2, 85748 Garching, Germany
| | - M Kisaki
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - K Nagaoka
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - H Nakano
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - M Osakabe
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - K Tsumori
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - S Geng
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi, Toki 509-5292, Japan
| | - O Kaneko
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - Y Takeiri
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
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43
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Tsumori K, Ikeda K, Nakano H, Kisaki M, Geng S, Wada M, Sasaki K, Nishiyama S, Goto M, Serianni G, Agostinetti P, Sartori E, Brombin M, Veltri P, Wimmer C, Nagaoka K, Osakabe M, Takeiri Y, Kaneko O. Negative ion production and beam extraction processes in a large ion source (invited). Rev Sci Instrum 2016; 87:02B936. [PMID: 26932108 DOI: 10.1063/1.4938254] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Recent research results on negative-ion-rich plasmas in a large negative ion source have been reviewed. Spatial density and flow distributions of negative hydrogen ions (H(-)) and positive hydrogen ions together with those of electrons are investigated with a 4-pin probe and a photodetachment (PD) signal of a Langmuir probe. The PD signal is converted to local H(-) density from signal calibration to a scanning cavity ring down PD measurement. Introduction of Cs changes the slope of plasma potential local distribution depending upon the plasma grid bias. A higher electron density H2 plasma locally shields the bias potential and behaves like a metallic free electron gas. On the other hand, the bias and extraction electric fields penetrate in a Cs-seeded electronegative plasma even when the electron density is similar. Electrons are transported by the penetrated electric fields from the driver region along and across the filter and electron deflection magnetic fields. Plasma ions exhibited a completely different response against the penetration of electric fields.
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Affiliation(s)
- K Tsumori
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - K Ikeda
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - H Nakano
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - M Kisaki
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - S Geng
- The Graduate University for Advanced Studies, Shonan Village, Hayama, Kanagawa 240-0193, Japan
| | - M Wada
- Graduate School of Science and Engineering, Doshisha University, Kyotanabe, Kyoto 610-0321, Japan
| | - K Sasaki
- Division of Quantum Science and Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - S Nishiyama
- Division of Quantum Science and Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - M Goto
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - G Serianni
- Plasma Engineering Group, Consorzio RFX, Corso Stati Uniti 4, 35127 Padova, Italy
| | - P Agostinetti
- Plasma Engineering Group, Consorzio RFX, Corso Stati Uniti 4, 35127 Padova, Italy
| | - E Sartori
- Plasma Engineering Group, Consorzio RFX, Corso Stati Uniti 4, 35127 Padova, Italy
| | - M Brombin
- Plasma Engineering Group, Consorzio RFX, Corso Stati Uniti 4, 35127 Padova, Italy
| | - P Veltri
- Plasma Engineering Group, Consorzio RFX, Corso Stati Uniti 4, 35127 Padova, Italy
| | - C Wimmer
- Max-Planck-Institut für Plasmaphysik, Bereich ITER-Technologie und -Diagnostik/N-NBI Boltzmannstr. 2, 85748 Garching, Germany
| | - K Nagaoka
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - M Osakabe
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - Y Takeiri
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - O Kaneko
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
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44
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Nagaoka K, Fujii K, Zhang H, Usuda K, Watanabe G, Ivshina M, Richter JD. CPEB1 mediates epithelial-to-mesenchyme transition and breast cancer metastasis. Oncogene 2015; 35:2893-901. [PMID: 26411364 PMCID: PMC4809797 DOI: 10.1038/onc.2015.350] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 07/28/2015] [Accepted: 08/17/2015] [Indexed: 01/08/2023]
Abstract
In mouse mammary epithelial cells, CPEB1 mediates the apical localization of ZO-1 mRNA, which encodes a critical tight junction component. In mice lacking CPEB1 and in cultured cells from which CPEB has been depleted, randomly distributed ZO-1 mRNA leads to the loss of cell polarity. We have investigated whether this diminution of polarity results in an epithelial-to-mesenchyme (EMT) transition and possible increased metastatic potential. Here, we show that CPEB1-depleted mammary epithelial cells alter their gene expression profile in a manner consistent with an EMT and also become motile, which are made particularly robust when cells are treated with TGF-β, an enhancer of EMT. CPEB1-depleted mammary cells become metastatic to the lung following injection into mouse fat pads while ectopically-expressed CPEB1 prevents metastasis. Surprisingly, CPEB1 depletion causes some EMT/metastasis-related mRNAs to have shorter poly(A) tails while other mRNAs to have longer poly(A) tails. Matrix metalloproteinase 9 (MMP9) mRNA, which encodes a metastasis-promoting factor, undergoes poly(A) lengthening and enhanced translation upon CPEB reduction. Moreover, in human breast cancer cells that become progressively more metastatic, CPEB1 is reduced while MMP9 becomes more abundant. These data suggest that at least in part, CPEB1 regulation of MMP9 mRNA expression mediates metastasis of breast cancer cells.
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Affiliation(s)
- K Nagaoka
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - K Fujii
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - H Zhang
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - K Usuda
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - G Watanabe
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - M Ivshina
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - J D Richter
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA, USA
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45
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Ida K, Yoshinuma M, Tsuchiya H, Kobayashi T, Suzuki C, Yokoyama M, Shimizu A, Nagaoka K, Inagaki S, Itoh K. Erratum: Flow damping due to stochastization of the magnetic field. Nat Commun 2015; 6:6531. [PMID: 25739874 PMCID: PMC4366482 DOI: 10.1038/ncomms7531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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46
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Du XD, Toi K, Osakabe M, Ohdachi S, Ido T, Tanaka K, Yokoyama M, Yoshinuma M, Ogawa K, Watanabe KY, Isobe M, Nagaoka K, Ozaki T, Sakakibara S, Seki R, Shimizu A, Suzuki Y, Tsuchiya H. Resistive interchange modes destabilized by helically trapped energetic ions in a helical plasma. Phys Rev Lett 2015; 114:155003. [PMID: 25933318 DOI: 10.1103/physrevlett.114.155003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Indexed: 06/04/2023]
Abstract
A new bursting m=1/n=1 instability (m,n: poloidal and toroidal mode numbers) with rapid frequency chirping down has been observed for the first time in a helical plasma with intense perpendicular neutral beam injection. This is destabilized in the plasma peripheral region by resonant interaction between helically trapped energetic ions and the resistive interchange mode. A large radial electric field is induced near the edge due to enhanced radial transport of the trapped energetic ions by the mode, and leads to clear change in toroidal plasma flow, suppression of microturbulence, and triggering an improvement of bulk plasma confinement.
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Affiliation(s)
- X D Du
- Department of Fusion Science, The Graduate University for Advanced Study, 509-5292 Toki, Japan
| | - K Toi
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - M Osakabe
- Department of Fusion Science, The Graduate University for Advanced Study, 509-5292 Toki, Japan
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - S Ohdachi
- Department of Fusion Science, The Graduate University for Advanced Study, 509-5292 Toki, Japan
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - T Ido
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - K Tanaka
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - M Yokoyama
- Department of Fusion Science, The Graduate University for Advanced Study, 509-5292 Toki, Japan
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - M Yoshinuma
- Department of Fusion Science, The Graduate University for Advanced Study, 509-5292 Toki, Japan
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - K Ogawa
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - K Y Watanabe
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - M Isobe
- Department of Fusion Science, The Graduate University for Advanced Study, 509-5292 Toki, Japan
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - K Nagaoka
- Department of Fusion Science, The Graduate University for Advanced Study, 509-5292 Toki, Japan
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - T Ozaki
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - S Sakakibara
- Department of Fusion Science, The Graduate University for Advanced Study, 509-5292 Toki, Japan
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - R Seki
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - A Shimizu
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - Y Suzuki
- Department of Fusion Science, The Graduate University for Advanced Study, 509-5292 Toki, Japan
- National Institute for Fusion Science, 509-5292 Toki, Japan
| | - H Tsuchiya
- National Institute for Fusion Science, 509-5292 Toki, Japan
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47
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Takahara M, Goto S, Miki K, Saiwaki S, Nagaoka K, Matsushita H, Kondo T, Bohnenkamp H, Yoshimoto T, Maekawa R, Kamigaki T. Induction of antigen specific T cells using PepTivator-pulsed dendritic cells. Cytotherapy 2014. [DOI: 10.1016/j.jcyt.2014.01.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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48
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Ikeda K, Nakano H, Tsumori K, Kisaki M, Nagaoka K, Osakabe M, Takeiri Y, Kaneko O. Development of spectrally selective imaging system for negative hydrogen ion source. Rev Sci Instrum 2014; 85:02A724. [PMID: 24593458 DOI: 10.1063/1.4842318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A spectrally selective imaging system has been developed to obtain a distribution of Hα emissions at the extraction region in a hydrogen negative ion source. The diagnostic system consisted of an aspherical lens, optical filters, a fiber image conduit, and a charge coupled device detector was installed on the 1/3-scaled hydrogen negative ion source in the National Institute for Fusion Science. The center of sight line passes beside the plasma grid (PG) surface with the distance of 11 mm, and the viewing angle has coverage 35 mm from the PG surface. Two dimensional Hα distribution in the range up to 20 mm from the PG surface was clearly observed. The reduction area for Hα emission caused by beam extraction was widely distributed in the extraction region near the PG surface.
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Affiliation(s)
- K Ikeda
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - H Nakano
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - K Tsumori
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - M Kisaki
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - K Nagaoka
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - M Osakabe
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - Y Takeiri
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - O Kaneko
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
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49
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Kisaki M, Tsumori K, Ikeda K, Nakano H, Osakabe M, Nagaoka K, Takeiri Y, Kaneko O. Characteristics of plasma grid bias in large-scaled negative ion source. Rev Sci Instrum 2014; 85:02B131. [PMID: 24593571 DOI: 10.1063/1.4854295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The electron density was measured at various bias voltages to understand how the plasma grid bias affects the electron near the plasma grid in large-scaled negative ion sources. It was found that the response of the electron to the bias voltage changes depending on negative ion production processes. The electron density remarkably decreases with increasing the bias voltage in the pure-volume plasma. On the other hand, the electron density depends on the bias voltage weakly in the Cs-seeded plasma. In addition, it was observed that the response of the co-extracted electron current to the bias voltage has similar trend to that of the electron density.
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Affiliation(s)
- M Kisaki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K Tsumori
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K Ikeda
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H Nakano
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M Osakabe
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K Nagaoka
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - Y Takeiri
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - O Kaneko
- National Institute for Fusion Science, Toki 509-5292, Japan
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50
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Toishi Y, Tsunoda N, Tagami M, Hashimoto H, Kato F, Suzuki T, Nagaoka K, Watanabe G, Tokuyama S, Okuda K, Taya K. Evaluation of the new rapid assay PATHFAST for measuring progesterone in whole blood and serum of mares. J Equine Vet Sci 2014. [DOI: 10.1016/j.jevs.2013.10.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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