1
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Ongena J, Castano-Bardawil D, Crombé K, Kazakov Y, Schweer B, Stepanov I, Van Schoor M, Vervier M, Krämer-Flecken A, Neubauer O, Nicolai D, Satheeswaran G, Offermanns G, Hollfeld K, Benndorf A, Dinklage A, Hartmann D, Kallmeyer J, Wolf R, TEC. Physics design, construction and commissioning of the ICRH system for the stellarator Wendelstein 7-X. Fusion Engineering and Design 2023. [DOI: 10.1016/j.fusengdes.2023.113627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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2
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Krat S, Prishvitsyn A, Alieva A, Efimov N, Vinitskiy E, Ulasevich D, Izarova A, Podolyako F, Belov A, Meshcheryakov A, Ongena J, Kharchev N, Chernenko A, Khayrutdinov R, Lukash V, Sinelnikov D, Bulgadaryan D, Sorokin I, Gubskiy K, Kaziev A, Kolodko D, Tumarkin V, Isakova A, Grunin A, Begrambekov L, Voskoboinikov R, Melnikov A. MEPhIST-0 Tokamak for Education and Research. Fusion Science and Technology 2023. [DOI: 10.1080/15361055.2022.2149033] [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] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- S. Krat
- National Research Nuclear University MEPhI, Moscow, Russia
| | - A. Prishvitsyn
- National Research Nuclear University MEPhI, Moscow, Russia
| | - A. Alieva
- National Research Nuclear University MEPhI, Moscow, Russia
| | - N. Efimov
- National Research Nuclear University MEPhI, Moscow, Russia
| | - E. Vinitskiy
- National Research Nuclear University MEPhI, Moscow, Russia
| | - D. Ulasevich
- National Research Nuclear University MEPhI, Moscow, Russia
- National Research Center, Kurchatov Institute, Moscow, Russia
| | - A. Izarova
- National Research Nuclear University MEPhI, Moscow, Russia
| | - F. Podolyako
- National Research Nuclear University MEPhI, Moscow, Russia
| | - A. Belov
- National Research Nuclear University MEPhI, Moscow, Russia
| | | | - J. Ongena
- Koninklijke Militaire School—Ecole Royale Militaire, Brussels, Belgium
| | - N. Kharchev
- National Research Center, Kurchatov Institute, Moscow, Russia
| | - A. Chernenko
- National Research Nuclear University MEPhI, Moscow, Russia
- National Research Center, Kurchatov Institute, Moscow, Russia
| | - R. Khayrutdinov
- National Research Center, Kurchatov Institute, Moscow, Russia
| | - V. Lukash
- National Research Center, Kurchatov Institute, Moscow, Russia
| | - D. Sinelnikov
- National Research Nuclear University MEPhI, Moscow, Russia
| | - D. Bulgadaryan
- National Research Nuclear University MEPhI, Moscow, Russia
| | - I. Sorokin
- National Research Nuclear University MEPhI, Moscow, Russia
- Russian Academy of Sciences, Kotel’nikov Institute of Radio Engineering and Electronics, Fryazino Branch, Fryazino, Russia
| | - K. Gubskiy
- National Research Nuclear University MEPhI, Moscow, Russia
| | - A. Kaziev
- National Research Nuclear University MEPhI, Moscow, Russia
| | - D. Kolodko
- National Research Nuclear University MEPhI, Moscow, Russia
- Russian Academy of Sciences, Kotel’nikov Institute of Radio Engineering and Electronics, Fryazino Branch, Fryazino, Russia
| | - V. Tumarkin
- National Research Nuclear University MEPhI, Moscow, Russia
| | - A. Isakova
- National Research Nuclear University MEPhI, Moscow, Russia
| | - A. Grunin
- National Research Nuclear University MEPhI, Moscow, Russia
| | - L. Begrambekov
- National Research Nuclear University MEPhI, Moscow, Russia
| | - R. Voskoboinikov
- Budker Institute of Nuclear Physics of the Siberian Branch of the RAS, Novosibirsk, Russia
| | - A. Melnikov
- National Research Nuclear University MEPhI, Moscow, Russia
- National Research Center, Kurchatov Institute, Moscow, Russia
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
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3
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Marcer G, Khilkevitch E, Shevelev A, Croci G, Dal Molin A, Gorini G, Grosso G, Muraro A, Nocente M, Perelli Cippo E, Putignano O, Rebai M, Rigamonti D, de la Luna E, Garcia J, Kazakov Y, Kiptily V, Maslov M, Nave MFF, Ongena J, Tardocchi M. A new dedicated signal processing system for gamma-ray spectrometers in high power deuterium-tritium plasma scenarios in tokamaks. Rev Sci Instrum 2022; 93:093525. [PMID: 36182521 DOI: 10.1063/5.0101611] [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: 06/02/2022] [Accepted: 08/19/2022] [Indexed: 06/16/2023]
Abstract
The most performant deuterium-tritium (DT) plasma discharges realized by the Joint European Torus (JET) tokamak in the recent DT campaign have produced neutron yields on the order of 1018 n/s. At such high neutron yields, gamma-ray spectroscopy measurements with scintillators are challenging as events from the neutron-induced background often dominate over the signal, leading to a significant fraction of pileup events and instability of the photodetector gain along with the consequent degradation of the reconstructed spectrum. Here, we describe the solutions adopted for the tangential lanthanum bromide spectrometer installed at JET. A data acquisition system with free streaming mode digitization capabilities for the entire duration of the discharge has been used to solve dead-time related issues and a data reconstruction code with pileup recovery and photodetector gain drift restoration has been implemented for off-line analysis of the data. This work focuses on the acquired data storage and parsing, with a detailed explanation of the pileup recovery and gain drift restoration algorithms.
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Affiliation(s)
- G Marcer
- Department of Physics, University of Milan-Bicocca, Milan, Italy
| | | | - A Shevelev
- Ioffe Institute, St. Petersburg, Russian Federation
| | - G Croci
- Department of Physics, University of Milan-Bicocca, Milan, Italy
| | - A Dal Molin
- Institute for Plasma Science and Technology, CNR, Milan, Italy
| | - G Gorini
- Department of Physics, University of Milan-Bicocca, Milan, Italy
| | - G Grosso
- Institute for Plasma Science and Technology, CNR, Milan, Italy
| | - A Muraro
- Institute for Plasma Science and Technology, CNR, Milan, Italy
| | - M Nocente
- Department of Physics, University of Milan-Bicocca, Milan, Italy
| | - E Perelli Cippo
- Institute for Plasma Science and Technology, CNR, Milan, Italy
| | - O Putignano
- Department of Physics, University of Milan-Bicocca, Milan, Italy
| | - M Rebai
- Institute for Plasma Science and Technology, CNR, Milan, Italy
| | - D Rigamonti
- Institute for Plasma Science and Technology, CNR, Milan, Italy
| | - E de la Luna
- Laboratorio Nacional de Fusión, CIEMAT, Madrid, Spain
| | - J Garcia
- CEA, IRFM, Saint-Paul-lez-Durance, France
| | - Y Kazakov
- Laboratory for Plasma Physics, ERM/KMS, Brussels, Belgium
| | - V Kiptily
- Culham Centre for Fusion Energy, United Kingdom Atomic Energy Authority, Abingdon, United Kingdom
| | - M Maslov
- Culham Centre for Fusion Energy, United Kingdom Atomic Energy Authority, Abingdon, United Kingdom
| | - M F F Nave
- Associacao EURATOM/IST, Universidade Tecnica de Lisboa, Lisbon, Portugal
| | - J Ongena
- Laboratory for Plasma Physics, ERM/KMS, Brussels, Belgium
| | - M Tardocchi
- Institute for Plasma Science and Technology, CNR, Milan, Italy
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4
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Nocente M, Kiptily V, Tardocchi M, Bonofiglo PJ, Craciunescu T, Molin AD, De La Luna E, Eriksson J, Garcia J, Ghani Z, Gorini G, Hägg L, Kazakov Y, Lerche E, Maggi CF, Mantica P, Marcer G, Maslov M, Putignano O, Rigamonti D, Salewski M, Sharapov S, Siren P, Stancar Z, Zohar A, Beaumont P, Crombe K, Ericsson G, Garcia-Munoz M, Keeling D, King D, Kirov K, Nave MFF, Ongena J, Patel A, Perez von Thun C. Fusion product measurements by nuclear diagnostics in the Joint European Torus deuterium-tritium 2 campaign (invited). Rev Sci Instrum 2022; 93:093520. [PMID: 36182523 DOI: 10.1063/5.0101767] [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: 06/03/2022] [Accepted: 08/20/2022] [Indexed: 06/16/2023]
Abstract
A new deuterium-tritium experimental, DTE2, campaign has been conducted at the Joint European Torus (JET) between August 2021 and late December 2021. Motivated by significant enhancements in the past decade at JET, such as the ITER-like wall and enhanced auxiliary heating power, the campaign achieved a new fusion energy world record and performed a broad range of fundamental experiments to inform ITER physics scenarios and operations. New capabilities in the area of fusion product measurements by nuclear diagnostics were available as a result of a decade long enhancement program. These have been tested for the first time in DTE2 and a concise overview is provided here. Confined alpha particle measurements by gamma-ray spectroscopy were successfully demonstrated, albeit with limitations at neutron rates higher than some 1017 n/s. High resolution neutron spectroscopy measurements with the magnetic proton recoil instrument were complemented by novel data from a set of synthetic diamond detectors, which enabled studies of the supra-thermal contributions to the neutron emission. In the area of escaping fast ion diagnostics, a lost fast ion detector and a set of Faraday cups made it possible to determine information on the velocity space and poloidal distribution of the lost alpha particles for the first time. This extensive set of data provides unique information for fundamental physics studies and validation of the numerical models, which are key to inform the physics and scenarios of ITER.
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Affiliation(s)
- M Nocente
- Department of Physics, University of Milano-Bicocca, Milan 20126, Italy
| | - V Kiptily
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - M Tardocchi
- Institute for Plasma Science and Technology, National Research Council, Milan 20125, Italy
| | - P J Bonofiglo
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA
| | - T Craciunescu
- Institute of Atomic Physics, Magurele-Bucharest 077125, Romania
| | - A Dal Molin
- Institute for Plasma Science and Technology, National Research Council, Milan 20125, Italy
| | - E De La Luna
- Laboratorio Nacional de Fusión, CIEMAT, Madrid 28040, Spain
| | - J Eriksson
- Department of Physics and Astronomy, Uppsala University, Uppsala SE-75120, Sweden
| | - J Garcia
- CEA, IRFM, Saint Paul lez Durance 13115, France
| | - Z Ghani
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - G Gorini
- Department of Physics, University of Milano-Bicocca, Milan 20126, Italy
| | - L Hägg
- Department of Physics and Astronomy, Uppsala University, Uppsala SE-75120, Sweden
| | - Y Kazakov
- Laboratory for Plasma Physics, LPP ERM/KMS, Brussels 1000, Belgium
| | - E Lerche
- Laboratory for Plasma Physics, LPP ERM/KMS, Brussels 1000, Belgium
| | - C F Maggi
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - P Mantica
- Institute for Plasma Science and Technology, National Research Council, Milan 20125, Italy
| | - G Marcer
- Department of Physics, University of Milano-Bicocca, Milan 20126, Italy
| | - M Maslov
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - O Putignano
- Department of Physics, University of Milano-Bicocca, Milan 20126, Italy
| | - D Rigamonti
- Institute for Plasma Science and Technology, National Research Council, Milan 20125, Italy
| | - M Salewski
- Department of Physics, Technical University of Denmark, Kgs. Lyngby 2800, Denmark
| | - S Sharapov
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - P Siren
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - Z Stancar
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - A Zohar
- Jožef Stefan Institute, Ljubljana 1000, Slovenia
| | - P Beaumont
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - K Crombe
- Laboratory for Plasma Physics, LPP ERM/KMS, Brussels 1000, Belgium
| | - G Ericsson
- Department of Physics and Astronomy, Uppsala University, Uppsala SE-75120, Sweden
| | - M Garcia-Munoz
- Department of Atomic, Molecular and Nuclear Physics, University of Seville, Seville 41012, Spain
| | - D Keeling
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - D King
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - K Kirov
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - M F F Nave
- Instituto de Plasmas e Fusao Nuclear, IST, Universidade de Lisboa, Lisboa 1049-001, Portugal
| | - J Ongena
- Laboratory for Plasma Physics, LPP ERM/KMS, Brussels 1000, Belgium
| | - A Patel
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - C Perez von Thun
- Institute of Plasma Physics and Laser Microfusion, Warsaw 01-497, Poland
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5
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Tran M, Agostinetti P, Aiello G, Avramidis K, Baiocchi B, Barbisan M, Bobkov V, Briefi S, Bruschi A, Chavan R, Chelis I, Day C, Delogu R, Ell B, Fanale F, Fassina A, Fantz U, Faugel H, Figini L, Fiorucci D, Friedl R, Franke T, Gantenbein G, Garavaglia S, Granucci G, Hanke S, Hogge JP, Hopf C, Kostic A, Illy S, Ioannidis Z, Jelonnek J, Jin J, Latsas G, Louche F, Maquet V, Maggiora R, Messiaen A, Milanesio D, Mimo A, Moro A, Ochoukov R, Ongena J, Pagonakis I, Peponis D, Pimazzoni A, Ragona R, Rispoli N, Ruess T, Rzesnicki T, Scherer T, Spaeh P, Starnella G, Strauss D, Thumm M, Tierens W, Tigelis I, Tsironis C, Usoltceva M, Van Eester D, Veronese F, Vincenzi P, Wagner F, Wu C, Zeus F, Zhang W. Status and future development of Heating and Current Drive for the EU DEMO. Fusion Engineering and Design 2022. [DOI: 10.1016/j.fusengdes.2022.113159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Moiseenko VE, Kovtun YV, Lozin AV, Pavlichenko RO, Shapoval AN, Grigor’eva LI, Kozulya MM, Maznichenko SM, Korovin VB, Kramskoy ED, Zamanov NV, Siusko YV, Baron DI, Krasiuk AY, Romanov VS, Garkusha IE, Wauters T, Alonso A, Brakel R, Dinklage A, Hartmann D, Kazakov Y, Laqua H, Ongena J, Stange T. Plasma Production in ICRF in the Uragan-2M Stellarator in Hydrogen–Helium Gas Mixture. J Fusion Energ 2022. [DOI: 10.1007/s10894-022-00326-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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7
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Ongena J. Fusion: a true challenge for an enormous reward. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202226800011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
A source of energy which would be inexhaustible, inherently safe and environmentally friendly, is this not a marvellous prospect? Nuclear fusion is a possible candidate for this role. It has been the energy source of our Sun and the stars in the universe for billions of years. The process requires temperatures of tens of millions of degrees, so extremely high and foreign to our daily experience that it seems out of reach. Nevertheless, these extremely high temperatures are routinely realised in several laboratories all over the world. Since the early 1990s, tens of MW of fusion power have been released from fusion reactions. Progress in the last years shows that fusion holds the promise to be a clean and safe solution for mankind’s long-term energy needs. We are witnessing the birth of a new technology destined to meet the gigantic future energy needs of mankind with minimal impact on the environment.
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8
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Noterdaeme JM, Messiaen A, Ragona R, Zhang W, Bader A, Durodié F, Fischer U, Franke T, Smigelskis E, Ongena J, Tran M, Van Eester D, Van Schoor M. Progress on an ion cyclotron range of frequency system for DEMO. Fusion Engineering and Design 2019. [DOI: 10.1016/j.fusengdes.2019.02.067] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Abstract
Nuclear physics shows that energy can be released from both fission of heavy nuclei and fusion of light nuclei. Steady progress shows that fusion — an important additional option for energy production in the future — promises to be a clean and safe solution for mankind’s long-term energy needs with minimal environmental impact. A source of energy which would be inexhaustible, inherently safe and environmentally friendly, is this not a marvellous prospect? Nuclear fusion, a possible candidate for this role, has been the energy source of our Sun and the stars in the universe for billions of years. This process requires temperatures of tens of millions of degrees, so extremely high and foreign to our daily experience that it seems out of reach. Nevertheless, these extremely high temperatures are routinely realised in several laboratories all over the world, and since the early 1990s, tens of MW fusion power have been released from fusion reactions. We are witnessing the birth of a new technology destined to meet the gigantic future energy needs of mankind with minimal impact on the environment.
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10
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Schweer B, Ongena J, Borsuk V, Birus D, Bozhenkov S, Bardawil DC, Durodié F, Hartmann D, Hollfeld K, Kallmeyer P, Krivska A, Louche F, Messiaen A, Neubauer O, Offermanns G, Satheeswaran G, Van Schoor M, Vervier M, Wolf R. Development of an ICRH antenna system at W7-X for plasma heating and wall conditioning. Fusion Engineering and Design 2017. [DOI: 10.1016/j.fusengdes.2017.05.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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11
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Jacquet P, Van Eester D, Lerche E, Bobkov V, Blackman T, Colas L, Challis C, Czarnecka A, Dumortier P, Frigione D, Durodié F, Garzotti L, Goniche M, Graves J, Kazakov Y, Kirov K, Klepper CC, Krawczyk N, Krivska A, Mantsinen M, Monakhov I, Nunes I, Ongena J, Reinke M, Rimini F, Zhang W. ICRH physics and technology achievements in JET-ILW. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201715702004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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12
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Ongena J, Kazakov Y, Baranov Y, Hellesen C, Eriksson J, Johnson T, Kiptily V, Mantsinen M, Nocente M, Bilato R, Cardinali A, Castaldo C, Crombé K, Czarnecka A, Dumont R, Faustin J, Giacomelli L, Goloborodko V, Graves J, Jacquet P, Krawczyk N, Lerche E, Meneses L, Nave M, Patten H, Schneider M, Van Eester D, Weisen H, Wright J. Synergetic heating of D-NBI ions in the vicinity of the mode conversion layer in H-D plasmas in JET with the ITER like wall. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201715702006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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13
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Affiliation(s)
- J. Ongena
- Laboratoire de Physique des Plasmas-Laboratorium voor Plasmafysica Association “Euratom-Etat belge”-Associatie “Euratom-Belgische Staat” Ecole Royale Militaire-Koninklijke Militaire School 30 Avenue de la Renaissancelaan 30 Bruxelles 1000 Brussel
| | - A. M. Messiaen
- Laboratoire de Physique des Plasmas-Laboratorium voor Plasmafysica Association “Euratom-Etat belge”-Associatie “Euratom-Belgische Staat” Ecole Royale Militaire-Koninklijke Militaire School 30 Avenue de la Renaissancelaan 30 Bruxelles 1000 Brussel
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14
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Ongena J, Van Oost G. Energy for Future Centuries - Prospects for Fusion Power as a Future Energy Source. Fusion Science and Technology 2017. [DOI: 10.13182/fst06-a1099] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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)
- J. Ongena
- Laboratorium voor Plasmafysica - Laboratoire de Physique des Plasmas Koninklijke Militaire School - Ecole Royale Militaire Association“EURATOM - Belgian State”, B-1000 BRUSSELS (Belgium) Partner in the Trilateral Euregio Cluster (TEC)
| | - G. Van Oost
- Department of Applied Physics, Ghent University, Rozier 44, B-9000 Gent
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15
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Affiliation(s)
- J. Ongena
- Laboratorium voor Plasmafysica - Laboratoire de Physique des Plasmas Koninklijke Militaire School - Ecole Royale Militaire Association “EURATOM - Belgian State”, B-1000 BRUSSELS (Belgium) Partner in the Trilateral Euregio Cluster (TEC)
| | - G. Van Oost
- Department of Applied Physics, Ghent University, Rozier 44, B-9000 Gent
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16
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Ongena J, Van Oost G. Energy for Future Centuries: Prospects for Fusion Power as a Future Energy Source. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a9391] [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)
- J. Ongena
- 1Laboratorium voor Plasmafysica - Laboratoire de Physique des Plasmas Koninklijke Militaire School - Ecole Royale Militaire Association “EURATOM - Belgian State”, B-1000 BRUSSELS (Belgium) Partner in the Trilateral Euregio Cluster (TEC)
| | - G. Van Oost
- Department of Applied Physics, Ghent University, Rozier 44, B-9000 Gent
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17
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Ongena J, Van Oost G. Energy for Future Centuries - Prospects for Fusion Power as a Future Energy Source. Fusion Science and Technology 2017. [DOI: 10.13182/fst08-a1686] [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)
- J. Ongena
- Laboratorium voor Plasmafysica - Laboratoire de Physique des Plasmas Koninklijke Militaire School - Ecole Royale Militaire Association “EURATOM - Belgian State”, B-1000 BRUSSELS (Belgium) Partner in the Trilateral Euregio Cluster (TEC)
| | - G. Van Oost
- Department of Applied Physics, Ghent University, Rozier 44, B-9000 Gent
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18
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Ongena J, Oost GV. Energy for Future Centuries: Will Fusion Be an Inexhaustible, Safe, and Clean Energy Source? Fusion Science and Technology 2017. [DOI: 10.13182/fst04-a464] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [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)
- J. Ongena
- Laboratorium voor Plasmafysica - Laboratoire de Physique des Plasmas Koninklijke Militaire School - Ecole Royale Militaire Association“EURATOM - Belgian State”, B-1000 BRUSSELS (Belgium) Partner in the Trilateral Euregio Cluster (TEC)
| | - G. Van Oost
- Department of Applied Physics, Ghent University, Rozier 44, B-9000 Gent
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19
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Unterberg B, Samm U, Tokar’ MZ, Messiaen AM, Ongena J, Jaspers R. The Radiative Improved Mode in TEXTOR: Power Exhaust and Improved Confinement at High Density. Fusion Science and Technology 2017. [DOI: 10.13182/fst05-a699] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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)
- B. Unterberg
- Institut für Plasmaphysik, Forschungszentrum Jülich GmbH EURATOM Association, Trilateral Euregio Cluster, D-52425 Jülich, Germany
| | - U. Samm
- Institut für Plasmaphysik, Forschungszentrum Jülich GmbH EURATOM Association, Trilateral Euregio Cluster, D-52425 Jülich, Germany
| | - M. Z. Tokar’
- Institut für Plasmaphysik, Forschungszentrum Jülich GmbH EURATOM Association, Trilateral Euregio Cluster, D-52425 Jülich, Germany
| | - A. M. Messiaen
- Laboratory for Plasma Physics, Ecole Royale Militaire - Koninklijke Militaire School, Association EURATOM-Belgian State, Trilateral Euregio Cluster B-1000 Brussels, Belgium
| | - J. Ongena
- Laboratory for Plasma Physics, Ecole Royale Militaire - Koninklijke Militaire School, Association EURATOM-Belgian State, Trilateral Euregio Cluster B-1000 Brussels, Belgium
| | - R. Jaspers
- Institute for Plasma Physics Rijnhuizen, Association EURATOM-FOM Trilateral Euregio Cluster, P.O. Box 1207, NL-3430 BE Nieuwegein, The Netherlands
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McDonald DC, Andrew Y, Huysmans GTA, Loarte A, Ongena J, Rapp J, Saarelma S. Chapter 3: ELMy H-Mode Operation in JET. Fusion Science and Technology 2017. [DOI: 10.13182/fst08-a1743] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [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)
- D. C. McDonald
- Euratom/UKAEA Fusion Association, Culham Science Centre, Abingdon Oxfordshire OX14 3DB, United Kingdom
| | - Y. Andrew
- Euratom/UKAEA Fusion Association, Culham Science Centre, Abingdon Oxfordshire OX14 3DB, United Kingdom
| | - G. T. A. Huysmans
- Association Euratom-CEA, CEA/DSM/DRFC, Centre de Cadarache 13108 St. Paul lez Durance, France
| | - A. Loarte
- EFDA Close Support Unit Garching, Boltzmannstrasse 2 D-85748 Garching bei München, Germany
| | - J. Ongena
- LPP-ERM0KMS, Euratom-Belgian State Association, Brussels, Belgium
| | - J. Rapp
- Forschungszentrum Jülich GmbH, Euratom Association, Jülich, Germany
| | - S. Saarelma
- Euratom/UKAEA Fusion Association, Culham Science Centre, Abingdon Oxfordshire OX14 3DB, United Kingdom
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Louche F, Křivská A, Messiaen A, Ongena J, Borsuk V, Durodié F, Schweer B. Three-dimensional modelling and numerical optimisation of the W7-X ICRH antenna. Fusion Engineering and Design 2015. [DOI: 10.1016/j.fusengdes.2015.01.039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ongena J, Messiaen AM. Heating, Confinement and Extrapolation to Reactors. Fusion Science and Technology 2012. [DOI: 10.13182/fst12-a13528] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- J. Ongena
- Laboratoire de Physique des Plasmas-Laboratorium voor Plasmafysica Association “Euratom-Etat belge”-Associatie “Euratom-Belgische Staat” Ecole Royale Militaire-Koninklijke Militaire School Brussels
| | - A. M. Messiaen
- Laboratoire de Physique des Plasmas-Laboratorium voor Plasmafysica Association “Euratom-Etat belge”-Associatie “Euratom-Belgische Staat” Ecole Royale Militaire-Koninklijke Militaire School Brussels
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Paul MK, Lyssoivan A, Koch R, Wauters T, Douai D, Bobkov V, Van Eester D, Lerche E, Ongena J, Rohde V, Noterdaeme JM, Graham M, Mayoral ML, Monakhov I, Nightingale M, Plyusnin V. Plasma and antenna coupling characterization in ICRF-wall conditioning experiments. Fusion Engineering and Design 2012. [DOI: 10.1016/j.fusengdes.2011.10.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Vrancken M, Lerche E, Blackman T, Durodié F, Evrard M, Graham M, Jacquet P, Kaye A, Mayoral ML, Nightingale M, Ongena J, Van Eester D, Van Schoor M. Performance of the Scattering Matrix Arc Detection System on the JET ITER-like ICRF antenna. Fusion Engineering and Design 2011. [DOI: 10.1016/j.fusengdes.2011.02.056] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [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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Nave MFF, Johnson T, Eriksson LG, Crombé K, Giroud C, Mayoral ML, Ongena J, Salmi A, Tala T, Tsalas M. Influence of magnetic field ripple on the intrinsic rotation of tokamak plasmas. Phys Rev Lett 2010; 105:105005. [PMID: 20867528 DOI: 10.1103/physrevlett.105.105005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2010] [Indexed: 05/29/2023]
Abstract
Using the unique capability of JET to monotonically change the amplitude of the magnetic field ripple, without modifying other relevant equilibrium conditions, the effect of the ripple on the angular rotation frequency of the plasma column was investigated under the conditions of no external momentum input. The ripple amplitude was varied from 0.08% to 1.5% in Ohmic and ion-cyclotron radio-frequency (ICRF) heated plasmas. In both cases the ripple causes counterrotation, indicating a strong torque due to nonambipolar transport of thermal ions and in the case of ICRF also fast ions.
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Affiliation(s)
- M F F Nave
- Associação EURATOM/IST, Instituto de Plasmas e Fusão Nuclear-Laboratorio Associado, Lisbon, Portugal
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Affiliation(s)
- J. Ongena
- Laboratoire de Physique des Plasmas-Laboratorium voor Plasmafysica Association “Euratom-Etat belge“-Associatie “Euratom-Belgische Staat“ Ecole Royale Militaire-Koninklijke Militaire School Brussels
| | - A. M. Messiaen
- Laboratoire de Physique des Plasmas-Laboratorium voor Plasmafysica Association “Euratom-Etat belge“-Associatie “Euratom-Belgische Staat“ Ecole Royale Militaire-Koninklijke Militaire School Brussels
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Durodié F, Nightingale M, Argouarch A, Berger-By G, Blackman T, Caughman J, Cocilovo V, Dumortier P, Edwards P, Fanthome J, Frigione D, Goulding R, Graham M, Hobrik J, Huygen S, Jachmich S, Jacquet P, Kaye A, Lamalle P, Lerche E, Loarer T, Mayoral ML, Messiaen A, Monakhov I, Nave M, Nicholls K, Ongena J, Rimini F, Van Eester D, Vervier M, Vrancken M, Sozzi C, Stork D, Tsalas M, Walden A, Whitehurst A, Zastrow KD. Commissioning of the ITER-like ICRF antenna for JET. Fusion Engineering and Design 2009. [DOI: 10.1016/j.fusengdes.2009.01.074] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ongena J, Messiaen AM. Heating, Confinement and Extrapolation to Reactors. Fusion Science and Technology 2008. [DOI: 10.13182/fst08-a1730] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- J. Ongena
- Laboratoire de Physique des Plasmas-Laboratorium voor Plasmafysica Association “Euratom-Etat belge”-Associatie “Euratom-Belgische Staat” Ecole Royale Militaire-Koninklijke Militaire School 30 Avenue de la Renaissancelaan 30 Bruxelles 1000 Brussel
| | - A. M. Messiaen
- Laboratoire de Physique des Plasmas-Laboratorium voor Plasmafysica Association “Euratom-Etat belge”-Associatie “Euratom-Belgische Staat” Ecole Royale Militaire-Koninklijke Militaire School 30 Avenue de la Renaissancelaan 30 Bruxelles 1000 Brussel
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Vrancken M, Mayoral ML, Blackman T, Bobkov V, Child D, Dumortier P, Durodié F, Evrard M, Goulding R, Graham M, Huygen S, Lamalle P, Louche F, Messiaen A, Monakhov I, Nightingale M, Noterdaeme JM, Ongena J, Stork D, Vervier M, Walden A, Whitehurst A. Recent ICRF developments at JET. Fusion Engineering and Design 2007. [DOI: 10.1016/j.fusengdes.2007.05.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Crombé K, Andrew Y, Brix M, Giroud C, Hacquin S, Hawkes NC, Murari A, Nave MFF, Ongena J, Parail V, Van Oost G, Voitsekhovitch I, Zastrow KD. Poloidal rotation dynamics, radial electric field, and neoclassical theory in the jet internal-transport-barrier region. Phys Rev Lett 2005; 95:155003. [PMID: 16241733 DOI: 10.1103/physrevlett.95.155003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2005] [Indexed: 05/05/2023]
Abstract
Results from the first measurements of a core plasma poloidal rotation velocity (upsilontheta) across internal transport barriers (ITB) on JET are presented. The spatial and temporal evolution of the ITB can be followed along with the upsilontheta radial profiles, providing a very clear link between the location of the steepest region of the ion temperature gradient and localized spin-up of upsilontheta. The upsilontheta measurements are an order of magnitude higher than the neoclassical predictions for thermal particles in the ITB region, contrary to the close agreement found between the determined and predicted particle and heat transport coefficients [K.-D. Zastrow, Plasma Phys. Controlled Fusion 46, B255 (2004)]. These results have significant implications for the understanding of transport barrier dynamics due to their large impact on the measured radial electric field profile.
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Affiliation(s)
- K Crombé
- Department of Applied Physics, Ghent University, Belgium
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Ongena J, Messiaen AM. Heating, Confinement, and Extrapolation to Reactors. Fusion Science and Technology 2004. [DOI: 10.13182/fst04-a512] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- J. Ongena
- Laboratoire de Physique des Plasmas-Laboratorium voor Plasmafysica Association “Euratom-Etat belge”-Associatie “Euratom-Belgische Staat” Ecole Royale Militaire-Koninklijke Militaire School 30 Avenue de la Renaissancelaan 30 Bruxelles 1000 Brussel
| | - A. M. Messiaen
- Laboratoire de Physique des Plasmas-Laboratorium voor Plasmafysica Association “Euratom-Etat belge”-Associatie “Euratom-Belgische Staat” Ecole Royale Militaire-Koninklijke Militaire School 30 Avenue de la Renaissancelaan 30 Bruxelles 1000 Brussel
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Ongena J, Van Oost G. Energy for Future Centuries: Will Fusion be an Inexhaustible, Safe and Clean Energy Source? Fusion Science and Technology 2002. [DOI: 10.13182/fst02-a11963498] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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)
- J. Ongena
- Laboratorium voor Plasmafysica - Laboratoire de Physique des Plasmas Koninklijke Militaire School - Ecole Royale Militaire Association “EURATOM - Belgian State”, B-1000 BRUSSELS (Belgium) Partner in the Trilateral Euregio Cluster (TEC)
| | - G. Van Oost
- Laboratorium voor Natuurkunde, Universiteit Gent, Rozier 44, B-9000 Gent (Belgium)
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Mank G, Messiaen AM, Ongena J, Unterberg B, Dumortier P, Finken KH, Jaspers R, Koslowski HR, Kramer-Flecken A, Rapp J, Samm U, Weynants RR. Quasistationary high confinement discharges with trans-greenwald density on TEXTOR-94. Phys Rev Lett 2000; 85:2312-2315. [PMID: 10978069 DOI: 10.1103/physrevlett.85.2312] [Citation(s) in RCA: 7] [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: 03/31/2000] [Indexed: 05/23/2023]
Abstract
Confinement quality as good as ELM-free H-mode at densities substantially above the Greenwald density limit ( &nmacr;(e,0)/n(GW) = 1.4) has been obtained in discharges with a radiative boundary under quasistationary conditions for 20 times the energy confinement time. This is achieved by optimizing the gas-fueling rate of RI-mode discharges which tailors their favorable energy confinement and leads to discharges with beta values just below the operational limit beta(n) = 2 of TEXTOR-94, thereby effectively avoiding confinement back transitions or disruptions. In addition, this high-density regime is favorable for helium removal and results in figures of merit tau(*)(p,He)/tau(E) approximately 10-15, relevant for a future fusion power reactor.
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Affiliation(s)
- G Mank
- Institut fur Plasmaphysik, Forschungszentrum Julich GmbH, EURATOM Association, D-52425 Julich, Germany
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Tokar MZ, Ongena J, Unterberg B, Weynants RR. Model for the transition to the radiatively improved mode in a tokamak. Phys Rev Lett 2000; 84:895-898. [PMID: 11017399 DOI: 10.1103/physrevlett.84.895] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/1999] [Indexed: 05/23/2023]
Abstract
A model for the transition to the radiatively improved (RI) mode triggered in tokamaks by seeding of impurities is proposed. This model takes into account that with increasing plasma effective charge the growth rate of the toroidal ion temperature gradient (ITG) instability, considered nowadays as the dominant source of anomalous energy losses in low-confinement (L) mode, decreases. As a result the plasma density profile peaks due to an inward convection generated by trapped electron turbulence. This completely quenches ITG induced transport and a bifurcation to the RI mode occurs. Conditions necessary for the L-RI transition are investigated.
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Affiliation(s)
- MZ Tokar
- Institut fur Plasmaphysik, Forschungszentrum Julich GmbH, EURATOM Association, D-52425 Julich, Germany
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Messiaen AM, Ongena J, Samm U, Unterberg B, Durodie F, Jaspers R, Tokar MZ, Vandenplas PE, Winter J, Wolf GH, Bertschinger G, Bonheure G, Dumortier P, Euringer H, Finken KH, Fuchs G, Giesen B, Koch R, Könen L, Königs C, Koslowski HR, Krämer-Flecken A, Lyssoivan A, Mank G, Rapp J, Schoon N, Telesca G, Uhlemann R, Vervier M, Waidmann G, Weynants RR. High Confinement and High Density with Stationary Plasma Energy and Strong Edge Radiation in the TEXTOR-94 Tokamak. Phys Rev Lett 1996; 77:2487-2490. [PMID: 10061966 DOI: 10.1103/physrevlett.77.2487] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Koch R, Messiaen A, Ongena J, Van Nieuwenhove R, Van Oost G, Van Wassenhove G, Dumortier P, Durodie F, Vandenplas P, Van Esteer D, Vervier M, Weynants R, Finken K, Euringer H, Philipps V, Samm U, Unterberg B, Winter J, Bertschinger G, Esser H, Fuchs G, Giesen B, Hintz E, Hoenen F, Hütteman P, Könen L, Korten M, Koslowski H, Krämer-Flecken A, Lochter M, Mank G, Pospieszczyk A, Schweer B, Soltwisch H, Telesca G, Uhlemann R, Waidmann G, Wolf G, Boedo J, Gray D, Hillis D, Oyevaar T, Tammen H, Tanabe T, Ueda Y. Recent results on ion cyclotron and combined heating of TEXTOR. Fusion Engineering and Design 1995. [DOI: 10.1016/0920-3796(94)00176-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Winter J, Esser HG, Jackson GL, Könen L, Messiaen A, Ongena J, Philipps V, Pospiesczcyk A, Samm U, Schweer B, Unterberg B, the TEXTOR. Improved plasma performance in TEXTOR with silicon coated surfaces. Phys Rev Lett 1993; 71:1549-1552. [PMID: 10054436 DOI: 10.1103/physrevlett.71.1549] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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