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Lin SH, Fang X, Zhang HJ, Qian C, Ma BH, Wang H, Li XX, Zhang XZ, Sun LT, Zhang ZM, Yuan P, Zhao HW. Study on a negative hydrogen ion source with hot cathode arc discharge. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:02B120. [PMID: 24593560 DOI: 10.1063/1.4847275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A negative hydrogen (H(-)) ion source with hot cathode arc discharge was designed and fabricated as a primary injector for a 10 MeV PET cyclotron at IMP. 1 mA dc H(-) beam with ɛ N, RMS = 0.08 π mm mrad was extracted at 25 kV. Halbach hexapole was adopted to confine the plasma. The state of arc discharge, the parameters including filament current, arc current, gas pressure, plasma electrode bias, and the ratio of I(e(-))/I(H(-)) were experimentally studied. The discussion on the result, and opinions to improve the source were given.
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Xiong B, Ruan L, Gu GB, Guo SQ, Cao R, Li ZG, Lu W, Zhang XZ, Sun LT, Zhao HW. Application of evaporative cooling technology in super-high power density magnet. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:02A913. [PMID: 24593492 DOI: 10.1063/1.4827113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Evaporative cooling technology utilizes phase-change heat transfer mode to achieve the cooling for heating equipment. The heat transfer capacity of evaporative cooling technology is far more than air or water cooling technology. The Electron Cyclotron Resonance ion source magnet is a typical super-high power density magnet, and the evaporative cooling technology is an ideal cooling method for the coils of magnet. In this paper we show the structure and process of coils and the special design of flow channels of coolant for an experiment magnet model. Additionally, the heat transfer circulation is presented and analyzed. By the finite element method, the flow channels are optimized to rationally allocate coolant and to reduce the temperature of coils. For the experiment model, the current density of copper wire of coils is 19 A/mm(2), and the coil-windows current density is larger than 12 A/mm(2). The max temperature of coils is below 80 °C, and the total heat is about 200 kW.
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Lu W, Xiong B, Zhang XZ, Sun LT, Feng YC, Ma BH, Guo SQ, Cao R, Ruan L, Zhao HW. Progress of a room temperature electron cyclotron resonance ion source using evaporative cooling technology at Institute of Modern Physics. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:02A926. [PMID: 24593505 DOI: 10.1063/1.4827575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A new room temperature ECR ion source, Lanzhou Electron Cyclotron Resonance ion source No. 4 (LECR4, previously named DRAGON), is under intense construction at Institute of Modern Physics. LECR4 is designed to operate with 18 GHz microwave frequency. The maximum axial magnetic fields are 2.3 T at injection and 1.3 T at extraction, and the radial field at the plasma chamber wall of 76 mm inner diameter is 1.0-1.2 T. One of the unique features for LECR4 is that its axial solenoids are winded with solid square copper wires which are immersed in a kind of special evaporative cooling medium for cooling purpose. Till now, a prototype of the cooling system has been successfully constructed and tested, which has demonstrated that the cooling efficiency of the designed system could meet the requirements of LECR4 under the routine operation conditions. All the main components of the ion source have been completed. Assembly and commissioning is ongoing. The latest developments and test results will be presented in this paper.
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Wu Q, Zhang ZM, Sun LT, Yang Y, Ma HY, Cao Y, Zhang XZ, Zhao HW. A 2.45 GHz intense proton source and low energy beam transport system for China Initiative Accelerator Driven Sub-Critical reactor system. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:02A703. [PMID: 24593437 DOI: 10.1063/1.4824804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
At Institute of Modern Physics, a cw 35 keV, 20 mA intense proton source and the low energy beam transport system (LEBT) have been developed for China Initiative Accelerator Driven Sub-Critical reactor system. In order to ensure high quality transmission of the intense ion beam from the exit of ion source to Radio Frequency Quadrupole (RFQ), a low energy beam transport line is used to focus beam to the RFQ entrance and match the Twiss parameters to the RFQ requirements. The 35 keV, 20 mA ion beam extracted by a three-electrode extraction system from the ion source passes through the LEBT to the RFQ entrance and the root-mean-square emittance is measured to be less than 0.2 π mm mrad. The commissioning results of the ion source and low energy beam transport system are described in this paper. The beam quality and transmission efficiency are also studied.
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Yang Y, Sun LT, Hu Q, Cao Y, Lu W, Feng YC, Fang X, Zhang XZ, Zhao HW, Xie DZ. Studies on low energy beam transport for high intensity high charged ions at IMP. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:02A719. [PMID: 24593453 DOI: 10.1063/1.4832935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Superconducting Electron Cyclotron Resonance ion source with Advanced design in Lanzhou (SECRAL) is an advanced fully superconducting ECR ion source at IMP designed to be operational at the microwave frequency of 18-24 GHz. The existing SECRAL beam transmission line is composed of a solenoid lens and a 110° analyzing magnet. Simulations of particle tracking with 3D space charge effect and realistic 3D magnetic fields through the line were performed using particle-in-cell code. The results of the beam dynamics show that such a low energy beam is very sensitive to the space charge effect and significantly suffers from the second-order aberration of the analyzing magnet resulting in large emittance. However, the second-order aberration could be reduced by adding compensating sextupole components in the beam line. On this basis, a new 110° analyzing magnet with relatively larger acceptance and smaller aberration is designed and will be used in the design of low energy beam transport line for a new superconducting ECR ion source SECRAL-II. The features of the analyzer and the corresponding beam trajectory calculation will be detailed and discussed in this paper.
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Sun L, Lu W, Feng YC, Zhang WH, Zhang XZ, Cao Y, Zhao YY, Wu W, Yang TJ, Zhao B, Zhao HW, Ma LZ, Xia JW, Xie D. Progress of superconducting electron cyclotron resonance ion sources at Institute of Modern Physics (IMP). THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:02A942. [PMID: 24593521 DOI: 10.1063/1.4825164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Superconducting ECR ion sources can produce intense highly charged ion beams for the application in heavy ion accelerators. Superconducting Electron Resonance ion source with Advanced Design (SECRAL) is one of the few fully superconducting ECR ion sources that has been successfully built and put into routine operation for years. With enormous efforts and R&D work, promising results have been achieved with the ion source. Heated by the microwave power from a 7 kW/24 GHz gyrotron microwave generator, very intense highly charged gaseous ion beams have been produced, such as 455 eμA Xe(27+), 236 eμA Xe(30+), and 64 eμA Xe(35+). Since heavy metallic ion beams are being more and more attractive and important for many accelerator projects globally, intensive studies have been made to produce highly charged heavy metal ion beams, such as those from bismuth and uranium. Recently, 420 eμA Bi(30+) and 202 eμA U(33+) have been produced with SECRAL source. This paper will present the latest results with SECRAL, and the operation status will be discussed as well. An introduction of recently started SECRAL II project will also be given in the presentation.
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Ma ZC, Zhao HW, Wang KT, Zhou XQ, Hu XL, Lu S, Cheng HB. Note: investigation on the influences of gripping methods on elastic modulus by a miniature tensile device and in situ verification. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2013; 84:066102. [PMID: 23822389 DOI: 10.1063/1.4808374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this paper, by gripping the specimen on various positions, including the gripping section, stress concentration transition section, and gauge length section, theoretical analysis on the influences of gripping methods on tensile elastic modulus calculation was investigated with a group of equations. Then, an image-based displacement measurement system was implemented, and the experimental verification via in situ tensile testing was carried out to verify the feasibility of the theoretical analysis by a miniature tensile device integrated with a metallographic microscope. The stress-strain curves of 2026 aluminum alloy were also obtained by gripping the specimens on various positions to illustrate the influences of gripping methods. The influence of gripping methods on elongation measurement was also investigated. This paper showed a modular calculation method of elastic modulus for the tensile testing of typical plate specimens.
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Yang Y, Zhang ZM, Wu Q, Zhang WH, Ma HY, Sun LT, Zhang XZ, Liu ZW, He Y, Zhao HW, Xie DZ. A low energy beam transport system for proton beam. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2013; 84:033306. [PMID: 23556814 DOI: 10.1063/1.4796096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A low energy beam transport (LEBT) system has been built for a compact pulsed hadron source (CPHS) at Tsinghua University in China. The LEBT, consisting of two solenoids and three short-drift sections, transports a pulsed proton beam of 60 mA of energy of 50 keV to the entrance of a radio frequency quadrupole (RFQ). Measurement has shown a normalized RMS beam emittance less than 0.2 π mm mrad at the end of the LEBT. Beam simulations were carried out to compare with the measurement and are in good agreement. Based on the successful CPHS LEBT development, a new LEBT for a China ADS projector has been designed. The features of the new design, including a beam chopper and beam simulations of the LEBT are presented and discussed along with CPHS LEBT development in this article.
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Zhang YW, Yan DL, Wang W, Zhao HW, Lu X, Wu JZ, Zhou JR. Knockdown of insulin-like growth factor I receptor inhibits the growth and enhances chemo-sensitivity of liver cancer cells. Curr Cancer Drug Targets 2012; 12:74-84. [PMID: 22165963 DOI: 10.2174/156800912798888974] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2010] [Revised: 11/10/2010] [Accepted: 08/16/2011] [Indexed: 11/22/2022]
Abstract
Liver cancer is one of the most common malignant cancers worldwide. Systemic chemotherapy remains the major treatment option, but with severe adverse effects. Combinations of systemic with targeted treatments may provide effective therapeutics. The objectives of this study were to demonstrate if insulin-like growth factor-I receptor (IGF-IR) might serve as a functional target for liver cancer treatment and to investigate the chemo-sensitizing activity of IGF-IR downregulation. IGF-IR knockdown was achieved by stable transfection of liver cancer cells with IGF-IR small interfering RNA (siRNA). IGF-IR knockdown resulted in reduced growth, clonogenic survival, adhesion and migration of liver cancer cells, and increased sensitivities of liver cancer cells to apoptosis-inducing agents and chemotherapeutic drugs in vitro. In the animal studies, both IGF-IR knockdown and adriamycin (ADM) treatment significantly reduced the growth of liver tumors. IGF-IR knockdown enhanced the effect of ADM on tumor growth by further reducing tumor angiogenesis and inducing tumor cell apoptosis. The final tumor sizes in the IGFIR-siRNA, ADM-treated EGFP, and ADM-treated IGFIR-siRNA groups were significantly reduced by 52.5%, 33.8%, and 86.3%, respectively, compared with that in the EGFP control, suggesting that the ADM and the IGF-IR knockdown inhibit the growth of liver tumors in a synergistic manner. These results support that IGF-IR may serve as a functional molecular target for liver cancer treatment, and that the combination of systemic chemotherapy with targeted IGF-IR suppression may provide an effective treatment strategy for liver cancer.
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60
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Zhang YH, Xu HS, Litvinov YA, Tu XL, Yan XL, Typel S, Blaum K, Wang M, Zhou XH, Sun Y, Brown BA, Yuan YJ, Xia JW, Yang JC, Audi G, Chen XC, Jia GB, Hu ZG, Ma XW, Mao RS, Mei B, Shuai P, Sun ZY, Wang ST, Xiao GQ, Xu X, Yamaguchi T, Yamaguchi Y, Zang YD, Zhao HW, Zhao TC, Zhang W, Zhan WL. Mass measurements of the neutron-deficient 41Ti, 45Cr, 49Fe, and 53Ni nuclides: first test of the isobaric multiplet mass equation in f p-shell nuclei. PHYSICAL REVIEW LETTERS 2012; 109:102501. [PMID: 23005283 DOI: 10.1103/physrevlett.109.102501] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Indexed: 06/01/2023]
Abstract
Isochronous mass spectrometry has been applied to neutron-deficient 58Ni projectile fragments at the HIRFL-CSR facility in Lanzhou, China. Masses of a series of short-lived T(z)=-3/2 nuclides including 41Ti, 45Cr, 49Fe, and 53Ni have been measured with a precision of 20-40 keV. The new data enable us to test for the first time the isobaric multiplet mass equation (IMME) in fp-shell nuclei. We observe that the IMME is inconsistent with the generally accepted quadratic form for the A=53, T=3/2 quartet. We perform full space shell model calculations and compare them with the new experimental results.
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Zhao HW, Lu W, Zhang XZ, Feng YC, Guo JW, Cao Y, Li JY, Guo XH, Sha S, Sun LT, Xie DZ. Performance and operation of advanced superconducting electron cyclotron resonance ion source SECRAL at 24 GHz. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2012; 83:02A320. [PMID: 22380167 DOI: 10.1063/1.3666913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
SECRAL (superconducting ECR ion source with advanced design in Lanzhou) ion source has been in routine operation for Heavy Ion Research Facility in Lanzhou (HIRFL) accelerator complex since May 2007. To further enhance the SECRAL performance in order to satisfy the increasing demand for intensive highly charged ion beams, 3-5 kW high power 24 GHz single frequency and 24 GHz +18 GHz double frequency with an aluminum plasma chamber were tested, and some exciting results were produced with quite a few new record highly charged ion beam intensities, such as (129)Xe(35+) of 64 eμA, (129)Xe(42+) of 3 eμA, (209)Bi(41+) of 50 eμA, (209)Bi(50+) of 4.3 eμA and (209)Bi(54+) of 0.2 eμA. In most cases SECRAL is operated at 18 GHz to deliver highly charged heavy ion beams for the HIRFL accelerator, only for those very high charge states and very heavy ion beams such as (209)Bi(36+) and (209)Bi(41+), SECRAL has been operated at 24 GHz. The total operation beam time provided by SECRAL up to July 2011 has exceeded 7720 hours. In this paper, the latest performance, development, and operation status of SECRAL ion source are presented. The latest results and reliable long-term operation for the HIRFL accelerator have demonstrated that SECRAL performance for production of highly charged heavy ion beams remains improving at higher RF power with optimized tuning.
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Lu W, Xie DZ, Zhang XZ, Xiong B, Ruan L, Sha S, Zhang WH, Cao Y, Lin SH, Guo JW, Fang X, Guo XH, Li XX, Ma HY, Yang Y, Wu Q, Zhao HY, Ma BH, Wang H, Zhu YH, Feng YC, Li JY, Li JQ, Sun LT, Zhao HW. Development of DRAGON electron cyclotron resonance ion source at Institute of Modern Physics. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2012; 83:02A328. [PMID: 22380175 DOI: 10.1063/1.3669800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A new room temperature electron cyclotron resonance (ECR) ion source, DRAGON, is under construction at IMP. DRAGON is designed to operate at microwaves of frequencies of 14.5-18 GHz. Its axial solenoid coils are cooled with evaporative medium to provide an axial magnetic mirror field of 2.5 T at the injection and 1.4 T at the extraction, respectively. In comparison to other conventional room temperature ECR ion sources, DRAGON has so far the largest bore plasma chamber of inner diameter of 126 mm with maximum radial fields of 1.4-1.5 T produced by a non-Halbach permanent sextupole magnet.
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63
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Sha S, Zhao HW, Guo XH, Zhang ZL, Fang X, Guo JW, Zhang WH, Lu W, Cao Y, Ma HY, Lin SH, Li XX, Ma BH, Yang Y, Wang H, Wu Q, Li JY, Feng YC, Zhao HY, Zhu YH, Sun LT, Zhang XZ, Chen XM, Xie DZ. Status of the laser ion source at IMP. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2012; 83:02B303. [PMID: 22380282 DOI: 10.1063/1.3656391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A laser (Nd:YAG laser, 3 J, 1064 nm, 8-10 ns) ion source has been built and under development at IMP to provide pulsed high-charge-state heavy ion beams to a radio frequency quadrupole (RFQ) for upgrading the IMP accelerators with a new low-energy beam injector. The laser ion source currently operates in a direct plasma injection scheme to inject the high charge state ions produced from a solid target into the RFQ. The maximum power density on the target was about 8.4 × 10(12) W∕cm(2). The preliminary experimental results will be presented and discussed in this paper.
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64
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Zhang WH, Ma HY, Yang Y, Wu Q, Zhang XZ, Wang H, Ma BH, Feng YC, Fang X, Guo JW, Cao Y, Li XX, Zhu YH, Li JY, Sha S, Lu W, Lin SH, Guo XH, Zhao HY, Sun LT, Xie DZ, Peng SX, Liu ZW, Zhao HW. A 2.45 GHz electron cyclotron resonance proton ion source and a dual-lens low energy beam transport. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2012; 83:02A329. [PMID: 22380176 DOI: 10.1063/1.3669802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The structure and preliminary commissioning results of a new 2.45 GHz ECR proton ion source and a dual-lens low energy beam transport (LEBT) system are presented in this paper. The main magnetic field of the ion source is provided by a set of permanent magnets with two small electro-solenoid magnets at the injection and the extraction to fine tune the magnetic field for better microwave coupling. A 50 keV pulsed proton beam extracted by a three-electrode mechanism passes through the LEBT system of length of 1183 mm. This LEBT consists of a diagnosis chamber, two Glaser lenses, two steering magnets, and a final beam defining cone. A set of inner permanent magnetic rings is embedded in each of the two Glaser lenses to produce a flatter axial-field to reduce the lens aberrations.
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65
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Cao Y, Lu W, Zhang WH, Sha S, Yang Y, Ma BH, Wang H, Zhu YH, Guo JW, Fang X, Lin SH, Li XX, Feng YC, Li JY, Zhao HY, Ma HY, Zhang XZ, Guo XH, Wu Q, Sun LT, Zhao HW, Xie DZ. Study of ion beam transport from the SECRAL electron cyclotron resonance ion source at the Institute of Modern Physics. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2012; 83:02B726. [PMID: 22380331 DOI: 10.1063/1.3680545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Ion beam transport from the Superconducting Electron Cyclotron Resonance ion source with Advanced design in Lanzhou (SECRAL) electron cyclotron resonance ion source was studied at the Institute of Modern Physics during 2010. Particle-in-cell simulations and experimental results have shown that both space charge and magnetic aberrations lead to a larger beam envelope and emittance growth. In the existing SECRAL extraction beam line, it has been shown that raising the solenoid lens magnetic field reduces aberrations in the subsequent dipole and results in lower emittance. Detailed beam emittance measurements are presented in this paper.
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Zhao HW, Haddad GG. Review: Hypoxic and oxidative stress resistance in Drosophila melanogaster. Placenta 2011; 32 Suppl 2:S104-8. [PMID: 21353099 DOI: 10.1016/j.placenta.2010.11.017] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Revised: 11/19/2010] [Accepted: 11/23/2010] [Indexed: 01/05/2023]
Abstract
Oxygen (O(2)) is essential for aerobic life; however, the level of O(2), whether too low (hypoxia) or too high (hyperoxia), can induce oxidative injury and increase morbidity and mortality. Disruption of O(2) homeostasis represents a major aspect of many disease etiologies and pathobiology. In the past, our laboratory has been using Drosophila melanogaster to investigate the cellular and molecular aspects of the response to hypoxia and oxidative stress. There are several advantages for using Drosophila as a model system, the most important one being an evolutionary conservation of genetic and signaling pathways from Drosophila to mammals. As a proof of this concept, we have shown that we can substantially improve the tolerance of human cells in culture by transfecting these cells with particular Drosophila genes. In this review, we summarize the recent findings from our laboratory using Drosophila as a model system to investigate the genetic basis of hypoxia/hyperoxia tolerance. We have done microarray studies and identified several oxidative stress resistance genes that play an important role in individual paradigms such as constant or intermittent hypoxia, short term (days) or long term (generations) hypoxia/hyperoxia. Our studies provide evidence that a pattern of oxidative stress is specific in inducing a gene expression profile which, in turn, plays an important role in modulating the phenotype. To improve our understanding of oxidative and hypoxic stress as well as its associated diseases, multi-disciplinary approaches are necessary and critical in the study of complicated issues in systems biology.
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Tu XL, Xu HS, Wang M, Zhang YH, Litvinov YA, Sun Y, Schatz H, Zhou XH, Yuan YJ, Xia JW, Audi G, Blaum K, Du CM, Geng P, Hu ZG, Huang WX, Jin SL, Liu LX, Liu Y, Ma X, Mao RS, Mei B, Shuai P, Sun ZY, Suzuki H, Tang SW, Wang JS, Wang ST, Xiao GQ, Xu X, Yamaguchi T, Yamaguchi Y, Yan XL, Yang JC, Ye RP, Zang YD, Zhao HW, Zhao TC, Zhang XY, Zhan WL. Direct mass measurements of short-lived A=2Z-1 nuclides (63)Ge, (65)As, (67)Se, and (71)Kr and their impact on nucleosynthesis in the rp process. PHYSICAL REVIEW LETTERS 2011; 106:112501. [PMID: 21469858 DOI: 10.1103/physrevlett.106.112501] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2011] [Indexed: 05/30/2023]
Abstract
Mass excesses of short-lived A=2Z-1 nuclei (63)Ge, (65)As, (67)Se, and (71)Kr have been directly measured to be -46,921(37), -46,937(85), -46,580(67), and -46,320(141) keV, respectively. The deduced proton separation energy of -90(85) keV for (65)As shows that this nucleus is only slightly proton unbound. X-ray burst model calculations with the new mass excess of (65)As suggest that the majority of the reaction flow passes through (64)Ge via proton capture, indicating that (64)Ge is not a significant rp-process waiting point.
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del Amo Sanchez P, Lees JP, Poireau V, Prencipe E, Tisserand V, Garra Tico J, Grauges E, Martinelli M, Palano A, Pappagallo M, Eigen G, Stugu B, Sun L, Battaglia M, Brown DN, Hooberman B, Kerth LT, Kolomensky YG, Lynch G, Osipenkov IL, Tanabe T, Hawkes CM, Watson AT, Koch H, Schroeder T, Asgeirsson DJ, Hearty C, Mattison TS, McKenna JA, Khan A, Randle-Conde A, Blinov VE, Buzykaev AR, Druzhinin VP, Golubev VB, Onuchin AP, Serednyakov SI, Skovpen YI, Solodov EP, Todyshev KY, Yushkov AN, Bondioli M, Curry S, Kirkby D, Lankford AJ, Mandelkern M, Martin EC, Stoker DP, Atmacan H, Gary JW, Liu F, Long O, Vitug GM, Campagnari C, Hong TM, Kovalskyi D, Richman JD, Eisner AM, Heusch CA, Kroseberg J, Lockman WS, Martinez AJ, Schalk T, Schumm BA, Seiden A, Winstrom LO, Cheng CH, Doll DA, Echenard B, Hitlin DG, Ongmongkolkul P, Porter FC, Rakitin AY, Andreassen R, Dubrovin MS, Mancinelli G, Meadows BT, Sokoloff MD, Bloom PC, Ford WT, Gaz A, Hirschauer JF, Nagel M, Nauenberg U, Smith JG, Wagner SR, Ayad R, Toki WH, Karbach TM, Merkel J, Petzold A, Spaan B, Wacker K, Kobel MJ, Schubert KR, Schwierz R, Bernard D, Verderi M, Clark PJ, Playfer S, Watson JE, Andreotti M, Bettoni D, Bozzi C, Calabrese R, Cecchi A, Cibinetto G, Fioravanti E, Franchini P, Luppi E, Munerato M, Negrini M, Petrella A, Piemontese L, Baldini-Ferroli R, Calcaterra A, de Sangro R, Finocchiaro G, Nicolaci M, Pacetti S, Patteri P, Peruzzi IM, Piccolo M, Rama M, Zallo A, Contri R, Guido E, Lo Vetere M, Monge MR, Passaggio S, Patrignani C, Robutti E, Tosi S, Bhuyan B, Morii M, Adametz A, Marks J, Schenk S, Uwer U, Bernlochner FU, Lacker HM, Lueck T, Volk A, Dauncey PD, Tibbetts M, Behera PK, Mallik U, Chen C, Cochran J, Crawley HB, Dong L, Meyer WT, Prell S, Rosenberg EI, Rubin AE, Gao YY, Gritsan AV, Guo ZJ, Arnaud N, Davier M, Derkach D, Firmino da Costa J, Grosdidier G, Le Diberder F, Lutz AM, Malaescu B, Perez A, Roudeau P, Schune MH, Serrano J, Sordini V, Stocchi A, Wang L, Wormser G, Lange DJ, Wright DM, Bingham I, Burke JP, Chavez CA, Coleman JP, Fry JR, Gabathuler E, Gamet R, Hutchcroft DE, Payne DJ, Touramanis C, Bevan AJ, Di Lodovico F, Sacco R, Sigamani M, Cowan G, Paramesvaran S, Wren AC, Brown DN, Davis CL, Denig AG, Fritsch M, Gradl W, Hafner A, Alwyn KE, Bailey D, Barlow RJ, Jackson G, Lafferty GD, West TJ, Anderson J, Cenci R, Jawahery A, Roberts DA, Simi G, Tuggle JM, Dallapiccola C, Salvati E, Cowan R, Dujmic D, Fisher PH, Sciolla G, Zhao M, Lindemann D, Patel PM, Robertson SH, Schram M, Biassoni P, Lazzaro A, Lombardo V, Palombo F, Stracka S, Cremaldi L, Godang R, Kroeger R, Sonnek P, Summers DJ, Zhao HW, Nguyen X, Simard M, Taras P, De Nardo G, Monorchio D, Onorato G, Sciacca C, Raven G, Snoek HL, Jessop CP, Knoepfel KJ, LoSecco JM, Wang WF, Corwin LA, Honscheid K, Kass R, Morris JP, Rahimi AM, Blount NL, Brau J, Frey R, Igonkina O, Kolb JA, Rahmat R, Sinev NB, Strom D, Strube J, Torrence E, Castelli G, Feltresi E, Gagliardi N, Margoni M, Morandin M, Posocco M, Rotondo M, Simonetto F, Stroili R, Ben-Haim E, Bonneaud GR, Briand H, Calderini G, Chauveau J, Hamon O, Leruste P, Marchiori G, Ocariz J, Prendki J, Sitt S, Biasini M, Manoni E, Angelini C, Batignani G, Bettarini S, Carpinelli M, Casarosa G, Cervelli A, Forti F, Giorgi MA, Lusiani A, Neri N, Paoloni E, Rizzo G, Walsh JJ, Lopes Pegna D, Lu C, Olsen J, Smith AJS, Telnov AV, Anulli F, Baracchini E, Cavoto G, Faccini R, Ferrarotto F, Ferroni F, Gaspero M, Li Gioi L, Mazzoni MA, Piredda G, Renga F, Ebert M, Hartmann T, Leddig T, Schröder H, Waldi R, Adye T, Franek B, Olaiya EO, Wilson FF, Emery S, Hamel de Monchenault G, Vasseur G, Yèche C, Zito M, Aitchison IJR, Allen MT, Aston D, Bard DJ, Bartoldus R, Benitez JF, Cartaro C, Convery MR, Dorfan J, Dubois-Felsmann GP, Dunwoodie W, Field RC, Franco Sevilla M, Fulsom BG, Gabareen AM, Graham MT, Grenier P, Hast C, Innes WR, Kelsey MH, Kim H, Kim P, Kocian ML, Leith DWGS, Li S, Lindquist B, Luitz S, Luth V, Lynch HL, MacFarlane DB, Marsiske H, Muller DR, Neal H, Nelson S, O'Grady CP, Ofte I, Perl M, Pulliam T, Ratcliff BN, Roodman A, Salnikov AA, Santoro V, Schindler RH, Schwiening J, Snyder A, Su D, Sullivan MK, Sun S, Suzuki K, Thompson JM, Va'vra J, Wagner AP, Weaver M, West CA, Wisniewski WJ, Wittgen M, Wright DH, Wulsin HW, Yarritu AK, Young CC, Ziegler V, Chen XR, Park W, Purohit MV, White RM, Wilson JR, Sekula SJ, Bellis M, Burchat PR, Edwards AJ, Miyashita TS, Ahmed S, Alam MS, Ernst JA, Pan B, Saeed MA, Zain SB, Guttman N, Soffer A, Lund P, Spanier SM, Eckmann R, Ritchie JL, Ruland AM, Schilling CJ, Schwitters RF, Wray BC, Izen JM, Lou XC, Bianchi F, Gamba D, Pelliccioni M, Bomben M, Lanceri L, Vitale L, Lopez-March N, Martinez-Vidal F, Milanes DA, Oyanguren A, Albert J, Banerjee S, Choi HHF, Hamano K, King GJ, Kowalewski R, Lewczuk MJ, Nugent IM, Roney JM, Sobie RJ, Gershon TJ, Harrison PF, Ilic J, Latham TE, Puccio EMT, Band HR, Chen X, Dasu S, Flood KT, Pan Y, Prepost R, Vuosalo CO, Wu SL. Evidence for direct CP violation in the measurement of the Cabbibo-Kobayashi-Maskawa angle γ with B∓ → D(*)K(*)∓ decays. PHYSICAL REVIEW LETTERS 2010; 105:121801. [PMID: 20867628 DOI: 10.1103/physrevlett.105.121801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2010] [Indexed: 05/29/2023]
Abstract
We report the measurement of the Cabibbo-Kobayashi-Maskawa CP-violating angle γ through a Dalitz plot analysis of neutral D-meson decays to K(S)(0) π+ π- and K(S)(0) K+ K- produced in the processes B∓ → DK∓, B∓ D* K∓ with D* → Dπ(0), Dγ, and B∓ → DK*∓ with K*∓ → K(S)(0) π∓, using 468 million BB pairs collected by the BABAR detector at the PEP-II asymmetric-energy e+ e- collider at SLAC. We measure γ = (68 ± 14 ± 4 ± 3)° (modulo 180°), where the first error is statistical, the second is the experimental systematic uncertainty, and the third reflects the uncertainty in the description of the neutral D decay amplitudes. This result is inconsistent with γ = 0 (no direct CP violation) with a significance of 3.5 standard deviations.
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del Amo Sanchez P, Lees JP, Poireau V, Prencipe E, Tisserand V, Garra Tico J, Grauges E, Martinelli M, Palano A, Pappagallo M, Eigen G, Stugu B, Sun L, Battaglia M, Brown DN, Hooberman B, Kerth LT, Kolomensky YG, Lynch G, Osipenkov IL, Tanabe T, Hawkes CM, Watson AT, Koch H, Schroeder T, Asgeirsson DJ, Hearty C, Mattison TS, McKenna JA, Khan A, Randle-Conde A, Blinov VE, Buzykaev AR, Druzhinin VP, Golubev VB, Onuchin AP, Serednyakov SI, Skovpen YI, Solodov EP, Todyshev KY, Yushkov AN, Bondioli M, Curry S, Kirkby D, Lankford AJ, Mandelkern M, Martin EC, Stoker DP, Atmacan H, Gary JW, Liu F, Long O, Vitug GM, Campagnari C, Hong TM, Kovalskyi D, Richman JD, Eisner AM, Heusch CA, Kroseberg J, Lockman WS, Martinez AJ, Schalk T, Schumm BA, Seiden A, Winstrom LO, Cheng CH, Doll DA, Echenard B, Hitlin DG, Ongmongkolkul P, Porter FC, Rakitin AY, Andreassen R, Dubrovin MS, Mancinelli G, Meadows BT, Sokoloff MD, Bloom PC, Ford WT, Gaz A, Hirschauer JF, Nagel M, Nauenberg U, Smith JG, Wagner SR, Ayad R, Toki WH, Karbach TM, Merkel J, Petzold A, Spaan B, Wacker K, Kobel MJ, Schubert KR, Schwierz R, Bernard D, Verderi M, Clark PJ, Playfer S, Watson JE, Andreotti M, Bettoni D, Bozzi C, Calabrese R, Cecchi A, Cibinetto G, Fioravanti E, Franchini P, Luppi E, Munerato M, Negrini M, Petrella A, Piemontese L, Baldini-Ferroli R, Calcaterra A, de Sangro R, Finocchiaro G, Nicolaci M, Pacetti S, Patteri P, Peruzzi IM, Piccolo M, Rama M, Zallo A, Contri R, Guido E, Lo Vetere M, Monge MR, Passaggio S, Patrignani C, Robutti E, Tosi S, Bhuyan B, Lee CL, Morii M, Adametz A, Marks J, Schenk S, Uwer U, Bernlochner FU, Lacker HM, Lueck T, Volk A, Dauncey PD, Tibbetts M, Behera PK, Mallik U, Chen C, Cochran J, Crawley HB, Dong L, Meyer WT, Prell S, Rosenberg EI, Rubin AE, Gao YY, Gritsan AV, Guo ZJ, Arnaud N, Davier M, Derkach D, Firmino da Costa J, Grosdidier G, Le Diberder F, Lutz AM, Malaescu B, Perez A, Roudeau P, Schune MH, Serrano J, Sordini V, Stocchi A, Wang L, Wormser G, Lange DJ, Wright DM, Bingham I, Burke JP, Chavez CA, Coleman JP, Fry JR, Gabathuler E, Gamet R, Hutchcroft DE, Payne DJ, Touramanis C, Bevan AJ, Di Lodovico F, Sacco R, Sigamani M, Cowan G, Paramesvaran S, Wren AC, Brown DN, Davis CL, Denig AG, Fritsch M, Gradl W, Hafner A, Alwyn KE, Bailey D, Barlow RJ, Jackson G, Lafferty GD, West TJ, Anderson J, Cenci R, Jawahery A, Roberts DA, Simi G, Tuggle JM, Dallapiccola C, Salvati E, Cowan R, Dujmic D, Fisher PH, Sciolla G, Zhao M, Lindemann D, Patel PM, Robertson SH, Schram M, Biassoni P, Lazzaro A, Lombardo V, Palombo F, Stracka S, Cremaldi L, Godang R, Kroeger R, Sonnek P, Summers DJ, Zhao HW, Nguyen X, Simard M, Taras P, De Nardo G, Monorchio D, Onorato G, Sciacca C, Raven G, Snoek HL, Jessop CP, Knoepfel KJ, LoSecco JM, Wang WF, Corwin LA, Honscheid K, Kass R, Morris JP, Rahimi AM, Blount NL, Brau J, Frey R, Igonkina O, Kolb JA, Rahmat R, Sinev NB, Strom D, Strube J, Torrence E, Castelli G, Feltresi E, Gagliardi N, Margoni M, Morandin M, Posocco M, Rotondo M, Simonetto F, Stroili R, Ben-Haim E, Bonneaud GR, Briand H, Calderini G, Chauveau J, Hamon O, Leruste P, Marchiori G, Ocariz J, Prendki J, Sitt S, Biasini M, Manoni E, Angelini C, Batignani G, Bettarini S, Carpinelli M, Casarosa G, Cervelli A, Forti F, Giorgi MA, Lusiani A, Neri N, Paoloni E, Rizzo G, Walsh JJ, Lopes Pegna D, Lu C, Olsen J, Smith AJS, Telnov AV, Anulli F, Baracchini E, Cavoto G, Faccini R, Ferrarotto F, Ferroni F, Gaspero M, Li Gioi L, Mazzoni MA, Piredda G, Renga F, Ebert M, Hartmann T, Leddig T, Schröder H, Waldi R, Adye T, Franek B, Olaiya EO, Wilson FF, Emery S, Hamel de Monchenault G, Vasseur G, Yèche C, Zito M, Aitchison IJR, Allen MT, Aston D, Bard DJ, Bartoldus R, Benitez JF, Cartaro C, Convery MR, Dorfan J, Dubois-Felsmann GP, Dunwoodie W, Field RC, Franco Sevilla M, Fulsom BG, Gabareen AM, Graham MT, Grenier P, Hast C, Innes WR, Kelsey MH, Kim H, Kim P, Kocian ML, Leith DWGS, Li S, Lindquist B, Luitz S, Luth V, Lynch HL, MacFarlane DB, Marsiske H, Muller DR, Neal H, Nelson S, O'Grady CP, Ofte I, Perl M, Pulliam T, Ratcliff BN, Roodman A, Salnikov AA, Santoro V, Schindler RH, Schwiening J, Snyder A, Su D, Sullivan MK, Sun S, Suzuki K, Thompson JM, Va'vra J, Wagner AP, Weaver M, West CA, Wisniewski WJ, Wittgen M, Wright DH, Wulsin HW, Yarritu AK, Young CC, Ziegler V, Chen XR, Park W, Purohit MV, White RM, Wilson JR, Sekula SJ, Bellis M, Burchat PR, Edwards AJ, Miyashita TS, Ahmed S, Alam MS, Ernst JA, Pan B, Saeed MA, Zain SB, Guttman N, Soffer A, Lund P, Spanier SM, Eckmann R, Ritchie JL, Ruland AM, Schilling CJ, Schwitters RF, Wray BC, Izen JM, Lou XC, Bianchi F, Gamba D, Pelliccioni M, Bomben M, Lanceri L, Vitale L, Lopez-March N, Martinez-Vidal F, Milanes DA, Oyanguren A, Albert J, Banerjee S, Choi HHF, Hamano K, King GJ, Kowalewski R, Lewczuk MJ, Nugent IM, Roney JM, Sobie RJ, Gershon TJ, Harrison PF, Ilic J, Latham TE, Puccio EMT, Band HR, Chen X, Dasu S, Flood KT, Pan Y, Prepost R, Vuosalo CO, Wu SL. Measurement of D0-D0 mixing parameters using D0 → K(S)(0)π+ π- and D0 → K(S)(0)K+ K- decays. PHYSICAL REVIEW LETTERS 2010; 105:081803. [PMID: 20868092 DOI: 10.1103/physrevlett.105.081803] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2010] [Indexed: 05/29/2023]
Abstract
We report a direct measurement of D0-D0 mixing parameters through a time-dependent amplitude analysis of the Dalitz plots of D(0) → K(S)(0) π+ π- and, for the first time, D0 → K(S)(0)K+ K- decays. The low-momentum pion π(s)(+) in the decay D*+ → D0 π(s)(+) identifies the flavor of the neutral D meson at its production. Using 468.5 fb(-1) of e+ e- colliding-beam data recorded near square root(s)=10.6 GeV by the BABAR detector at the PEP-II asymmetric-energy collider at SLAC, we measure the mixing parameters x = [1.6 ± 2.3(stat) ± 1.2(syst) ± 0.8(model)] × 10(-3), and y = [5.7 ± 2.0(stat) ± 1.3(syst) ± 0.7(model)] × 10(-3). These results provide the best measurement to date of x and y. The knowledge of the value of x, in particular, is crucial for understanding the origin of mixing.
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Aubert B, Karyotakis Y, Lees JP, Poireau V, Prencipe E, Prudent X, Tisserand V, Garra Tico J, Grauges E, Martinelli M, Palano A, Pappagallo M, Eigen G, Stugu B, Sun L, Battaglia M, Brown DN, Kerth LT, Kolomensky YG, Lynch G, Osipenkov IL, Tackmann K, Tanabe T, Hawkes CM, Soni N, Watson AT, Koch H, Schroeder T, Asgeirsson DJ, Fulsom BG, Hearty C, Mattison TS, McKenna JA, Barrett M, Khan A, Randle-Conde A, Blinov VE, Bukin AD, Buzykaev AR, Druzhinin VP, Golubev VB, Onuchin AP, Serednyakov SI, Skovpen YI, Solodov EP, Todyshev KY, Bondioli M, Curry S, Eschrich I, Kirkby D, Lankford AJ, Lund P, Mandelkern M, Martin EC, Stoker DP, Atmacan H, Gary JW, Liu F, Long O, Vitug GM, Yasin Z, Sharma V, Campagnari C, Hong TM, Kovalskyi D, Mazur MA, Richman JD, Beck TW, Eisner AM, Heusch CA, Kroseberg J, Lockman WS, Martinez AJ, Schalk T, Schumm BA, Seiden A, Wang L, Winstrom LO, Cheng CH, Doll DA, Echenard B, Fang F, Hitlin DG, Narsky I, Ongmongkolkul P, Piatenko T, Porter FC, Andreassen R, Mancinelli G, Meadows BT, Mishra K, Sokoloff MD, Bloom PC, Ford WT, Gaz A, Hirschauer JF, Nagel M, Nauenberg U, Smith JG, Wagner SR, Ayad R, Toki WH, Wilson RJ, Feltresi E, Hauke A, Jasper H, Karbach TM, Merkel J, Petzold A, Spaan B, Wacker K, Kobel MJ, Nogowski R, Schubert KR, Schwierz R, Bernard D, Latour E, Verderi M, Clark PJ, Playfer S, Watson JE, Andreotti M, Bettoni D, Bozzi C, Calabrese R, Cecchi A, Cibinetto G, Fioravanti E, Franchini P, Luppi E, Munerato M, Negrini M, Petrella A, Piemontese L, Santoro V, Baldini-Ferroli R, Calcaterra A, de Sangro R, Finocchiaro G, Pacetti S, Patteri P, Peruzzi IM, Piccolo M, Rama M, Zallo A, Contri R, Guido E, Lo Vetere M, Monge MR, Passaggio S, Patrignani C, Robutti E, Tosi S, Chaisanguanthum KS, Morii M, Adametz A, Marks J, Schenk S, Uwer U, Bernlochner FU, Klose V, Lacker HM, Lueck T, Volk A, Bard DJ, Dauncey PD, Tibbetts M, Behera PK, Charles MJ, Mallik U, Cochran J, Crawley HB, Dong L, Eyges V, Meyer WT, Prell S, Rosenberg EI, Rubin AE, Gao YY, Gritsan AV, Guo ZJ, Arnaud N, Béquilleux J, D'Orazio A, Davier M, Derkach D, Firmino da Costa J, Grosdidier G, Le Diberder F, Lepeltier V, Lutz AM, Malaescu B, Pruvot S, Roudeau P, Schune MH, Serrano J, Sordini V, Stocchi A, Wormser G, Lange DJ, Wright DM, Bingham I, Burke JP, Chavez CA, Fry JR, Gabathuler E, Gamet R, Hutchcroft DE, Payne DJ, Touramanis C, Bevan AJ, Clarke CK, Di Lodovico F, Sacco R, Sigamani M, Cowan G, Paramesvaran S, Wren AC, Brown DN, Davis CL, Denig AG, Fritsch M, Gradl W, Hafner A, Alwyn KE, Bailey D, Barlow RJ, Jackson G, Lafferty GD, West TJ, Yi JI, Anderson J, Chen C, Jawahery A, Roberts DA, Simi G, Tuggle JM, Dallapiccola C, Salvati E, Cowan R, Dujmic D, Fisher PH, Henderson SW, Sciolla G, Spitznagel M, Yamamoto RK, Zhao M, Patel PM, Robertson SH, Schram M, Biassoni P, Lazzaro A, Lombardo V, Palombo F, Stracka S, Cremaldi L, Godang R, Kroeger R, Sonnek P, Summers DJ, Zhao HW, Simard M, Taras P, Nicholson H, De Nardo G, Lista L, Monorchio D, Onorato G, Sciacca C, Raven G, Snoek HL, Jessop CP, Knoepfel KJ, LoSecco JM, Wang WF, Corwin LA, Honscheid K, Kagan H, Kass R, Morris JP, Rahimi AM, Sekula SJ, Wong QK, Blount NL, Brau J, Frey R, Igonkina O, Kolb JA, Lu M, Rahmat R, Sinev NB, Strom D, Strube J, Torrence E, Castelli G, Gagliardi N, Margoni M, Morandin M, Posocco M, Rotondo M, Simonetto F, Stroili R, Voci C, Del Amo Sanchez P, Ben-Haim E, Bonneaud GR, Briand H, Chauveau J, Hamon O, Leruste P, Marchiori G, Ocariz J, Perez A, Prendki J, Sitt S, Gladney L, Biasini M, Manoni E, Angelini C, Batignani G, Bettarini S, Calderini G, Carpinelli M, Cervelli A, Forti F, Giorgi MA, Lusiani A, Morganti M, Neri N, Paoloni E, Rizzo G, Walsh JJ, Lopes Pegna D, Lu C, Olsen J, Smith AJS, Telnov AV, Anulli F, Baracchini E, Cavoto G, Faccini R, Ferrarotto F, Ferroni F, Gaspero M, Jackson PD, Gioi LL, Mazzoni MA, Morganti S, Piredda G, Renga F, Voena C, Ebert M, Hartmann T, Schröder H, Waldi R, Adye T, Franek B, Olaiya EO, Wilson FF, Emery S, Esteve L, Hamel de Monchenault G, Kozanecki W, Vasseur G, Yèche C, Zito M, Allen MT, Aston D, Bartoldus R, Benitez JF, Cenci R, Coleman JP, Convery MR, Dingfelder JC, Dorfan J, Dubois-Felsmann GP, Dunwoodie W, Field RC, Franco Sevilla M, Gabareen AM, Graham MT, Grenier P, Hast C, Innes WR, Kaminski J, Kelsey MH, Kim H, Kim P, Kocian ML, Leith DWGS, Li S, Lindquist B, Luitz S, Luth V, Lynch HL, Macfarlane DB, Marsiske H, Messner R, Muller DR, Neal H, Nelson S, O'Grady CP, Ofte I, Perl M, Ratcliff BN, Roodman A, Salnikov AA, Schindler RH, Schwiening J, Snyder A, Su D, Sullivan MK, Suzuki K, Swain SK, Thompson JM, Va'vra J, Wagner AP, Weaver M, West CA, Wisniewski WJ, Wittgen M, Wright DH, Wulsin HW, Yarritu AK, Young CC, Ziegler V, Chen XR, Liu H, Park W, Purohit MV, White RM, Wilson JR, Bellis M, Burchat PR, Edwards AJ, Miyashita TS, Ahmed S, Alam MS, Ernst JA, Pan B, Saeed MA, Zain SB, Soffer A, Spanier SM, Wogsland BJ, Eckmann R, Ritchie JL, Ruland AM, Schilling CJ, Schwitters RF, Wray BC, Drummond BW, Izen JM, Lou XC, Bianchi F, Gamba D, Pelliccioni M, Bomben M, Bosisio L, Cartaro C, Della Ricca G, Lanceri L, Vitale L, Azzolini V, Lopez-March N, Martinez-Vidal F, Milanes DA, Oyanguren A, Albert J, Banerjee S, Bhuyan B, Choi HHF, Hamano K, King GJ, Kowalewski R, Lewczuk MJ, Nugent IM, Roney JM, Sobie RJ, Gershon TJ, Harrison PF, Ilic J, Latham TE, Mohanty GB, Puccio EMT, Band HR, Chen X, Dasu S, Flood KT, Pan Y, Prepost R, Vuosalo CO, Wu SL. Measurements of charged current lepton universality and |Vus| using tau lepton decays to e- ν(e) ν(τ), μ- ν(μ) ν(τ), π- ν(τ), and K- ν(τ). PHYSICAL REVIEW LETTERS 2010; 105:051602. [PMID: 20867905 DOI: 10.1103/physrevlett.105.051602] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2009] [Indexed: 05/29/2023]
Abstract
Using 467 fb(-1) of e+e- annihilation data collected with the BABAR detector, we measure (B(τ- → μ- ν(μ) ν(τ)))/(B(τ- → e- ν(e) ν(τ))) =(0.9796±0.0016±0.0036), (B(τ- → π- ν(τ)))/(B(τ- → e- ν(e) ν(τ))) = (0.5945±0.0014±0.0061), and (B(τ- → K- ν(τ)))/(B(τ- → e- ν(e) ν(τ))) = (0.03882±0.00032±0.00057), where the uncertainties are statistical and systematic, respectively. From these precision τ measurements, we test the standard model assumption of μ-e and τ-μ charge current lepton universality and provide determinations of |Vus| experimentally independent of the decay of a kaon.
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del Amo Sanchez P, Lees JP, Poireau V, Prencipe E, Tisserand V, Garra Tico J, Grauges E, Martinelli M, Palano A, Pappagallo M, Eigen G, Stugu B, Sun L, Battaglia M, Brown DN, Hooberman B, Kerth LT, Kolomensky YG, Lynch G, Osipenkov IL, Tanabe T, Hawkes CM, Soni N, Watson AT, Koch H, Schroeder T, Asgeirsson DJ, Hearty C, Mattison TS, McKenna JA, Khan A, Randle-Conde A, Blinov VE, Buzykaev AR, Druzhinin VP, Golubev VB, Onuchin AP, Serednyakov SI, Skovpen YI, Solodov EP, Todyshev KY, Yushkov AN, Bondioli M, Curry S, Kirkby D, Lankford AJ, Mandelkern M, Martin EC, Stoker DP, Atmacan H, Gary JW, Liu F, Long O, Vitug GM, Yasin Z, Sharma V, Campagnari C, Hong TM, Kovalskyi D, Richman JD, Eisner AM, Heusch CA, Kroseberg J, Lockman WS, Martinez AJ, Schalk T, Schumm BA, Seiden A, Winstrom LO, Cheng CH, Doll DA, Echenard B, Hitlin DG, Ongmongkolkul P, Porter FC, Rakitin AY, Andreassen R, Dubrovin MS, Mancinelli G, Meadows BT, Sokoloff MD, Bloom PC, Ford WT, Gaz A, Hirschauer JF, Nagel M, Nauenberg U, Smith JG, Wagner SR, Ayad R, Toki WH, Hauke A, Jasper H, Karbach TM, Merkel J, Petzold A, Spaan B, Wacker K, Kobel MJ, Schubert KR, Schwierz R, Bernard D, Verderi M, Clark PJ, Playfer S, Watson JE, Andreotti M, Bettoni D, Bozzi C, Calabrese R, Cecchi A, Cibinetto G, Fioravanti E, Franchini P, Luppi E, Munerato M, Negrini M, Petrella A, Piemontese L, Baldini-Ferroli R, Calcaterra A, de Sangro R, Finocchiaro G, Nicolaci M, Pacetti S, Patteri P, Peruzzi IM, Piccolo M, Rama M, Zallo A, Contri R, Guido E, Lo Vetere M, Monge MR, Passaggio S, Patrignani C, Robutti E, Tosi S, Bhuyan B, Morii M, Adametz A, Marks J, Schenk S, Uwer U, Bernlochner FU, Lacker HM, Lueck T, Volk A, Dauncey PD, Tibbetts M, Behera PK, Mallik U, Chen C, Cochran J, Crawley HB, Dong L, Meyer WT, Prell S, Rosenberg EI, Rubin AE, Gao YY, Gritsan AV, Guo ZJ, Arnaud N, Davier M, Derkach D, Firmino da Costa J, Grosdidier G, Le Diberder F, Lutz AM, Malaescu B, Perez A, Roudeau P, Schune MH, Serrano J, Sordini V, Stocchi A, Wang L, Wormser G, Lange DJ, Wright DM, Bingham I, Burke JP, Chavez CA, Coleman JP, Fry JR, Gabathuler E, Gamet R, Hutchcroft DE, Payne DJ, Touramanis C, Bevan AJ, Di Lodovico F, Sacco R, Sigamani M, Cowan G, Paramesvaran S, Wren AC, Brown DN, Davis CL, Denig AG, Fritsch M, Gradl W, Hafner A, Alwyn KE, Bailey D, Barlow RJ, Jackson G, Lafferty GD, West TJ, Anderson J, Cenci R, Jawahery A, Roberts DA, Simi G, Tuggle JM, Dallapiccola C, Salvati E, Cowan R, Dujmic D, Fisher PH, Sciolla G, Yamamoto RK, Zhao M, Patel PM, Robertson SH, Schram M, Biassoni P, Lazzaro A, Lombardo V, Palombo F, Stracka S, Cremaldi L, Godang R, Kroeger R, Sonnek P, Summers DJ, Zhao HW, Nguyen X, Simard M, Taras P, De Nardo G, Monorchio D, Onorato G, Sciacca C, Raven G, Snoek HL, Jessop CP, Knoepfel KJ, LoSecco JM, Wang WF, Corwin LA, Honscheid K, Kass R, Morris JP, Rahimi AM, Blount NL, Brau J, Frey R, Igonkina O, Kolb JA, Rahmat R, Sinev NB, Strom D, Strube J, Torrence E, Castelli G, Feltresi E, Gagliardi N, Margoni M, Morandin M, Posocco M, Rotondo M, Simonetto F, Stroili R, Ben-Haim E, Bonneaud GR, Briand H, Chauveau J, Hamon O, Leruste P, Marchiori G, Ocariz J, Prendki J, Sitt S, Biasini M, Manoni E, Angelini C, Batignani G, Bettarini S, Calderini G, Carpinelli M, Cervelli A, Forti F, Giorgi MA, Lusiani A, Neri N, Paoloni E, Rizzo G, Walsh JJ, Lopes Pegna D, Lu C, Olsen J, Smith AJS, Telnov AV, Anulli F, Baracchini E, Cavoto G, Faccini R, Ferrarotto F, Ferroni F, Gaspero M, Li Gioi L, Mazzoni MA, Piredda G, Renga F, Ebert M, Hartmann T, Leddig T, Schröder H, Waldi R, Adye T, Franek B, Olaiya EO, Wilson FF, Emery S, Hamel de Monchenault G, Vasseur G, Yèche C, Zito M, Allen MT, Aston D, Bard DJ, Bartoldus R, Benitez JF, Cartaro C, Convery MR, Dorfan J, Dubois-Felsmann GP, Dunwoodie W, Field RC, Franco Sevilla M, Fulsom BG, Gabareen AM, Graham MT, Grenier P, Hast C, Innes WR, Kelsey MH, Kim H, Kim P, Kocian ML, Leith DWGS, Li S, Lindquist B, Luitz S, Luth V, Lynch HL, MacFarlane DB, Marsiske H, Muller DR, Neal H, Nelson S, O'Grady CP, Ofte I, Perl M, Ratcliff BN, Roodman A, Salnikov AA, Santoro V, Schindler RH, Schwiening J, Snyder A, Su D, Sullivan MK, Suzuki K, Thompson JM, Va'vra J, Wagner AP, Weaver M, West CA, Wisniewski WJ, Wittgen M, Wright DH, Wulsin HW, Yarritu AK, Young CC, Ziegler V, Chen XR, Park W, Purohit MV, White RM, Wilson JR, Sekula SJ, Bellis M, Burchat PR, Edwards AJ, Miyashita TS, Ahmed S, Alam MS, Ernst JA, Pan B, Saeed MA, Zain SB, Guttman N, Soffer A, Lund P, Spanier SM, Eckmann R, Ritchie JL, Ruland AM, Schilling CJ, Schwitters RF, Wray BC, Izen JM, Lou XC, Bianchi F, Gamba D, Pelliccioni M, Bomben M, Della Ricca G, Lanceri L, Vitale L, Azzolini V, Lopez-March N, Martinez-Vidal F, Milanes DA, Oyanguren A, Albert J, Banerjee S, Choi HHF, Hamano K, King GJ, Kowalewski R, Lewczuk MJ, Nugent IM, Roney JM, Sobie RJ, Gershon TJ, Harrison PF, Ilic J, Latham TE, Mohanty GB, Puccio EMT, Band HR, Chen X, Dasu S, Flood KT, Pan Y, Pierini M, Prepost R, Vuosalo CO, Wu SL. Test of lepton universality in Υ(1S) decays at BABAR. PHYSICAL REVIEW LETTERS 2010; 104:191801. [PMID: 20866959 DOI: 10.1103/physrevlett.104.191801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2010] [Indexed: 05/29/2023]
Abstract
The ratio R(τμ)(Υ(1S))=Γ(Υ(1S)→τ+ τ-)/Γ(Υ(1S)→μ+ μ-) is measured using a sample of (121.8±1.2)×10(6)Υ(3S) events recorded by the BABAR detector. This measurement is intended as a test of lepton universality and as a search for a possible light pseudoscalar Higgs boson. In the standard model (SM) this ratio is expected to be close to 1. Any significant deviations would violate lepton universality and could be introduced by the coupling to a light pseudoscalar Higgs boson. The analysis studies the decays Υ(3S)→Υ(1S)π+ π-, Υ(1S)→l+ l-, where l=μ, τ. The result, R(τμ)(Υ(1S))=1.005±0.013(stat)±0.022(syst), shows no deviation from the expected SM value, while improving the precision with respect to previous measurements.
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Lees JP, Poireau V, Prencipe E, Tisserand V, Garra Tico J, Grauges E, Martinelli M, Palano A, Pappagallo M, Eigen G, Stugu B, Sun L, Battaglia M, Brown DN, Hooberman B, Kerth LT, Kolomensky YG, Lynch G, Osipenkov IL, Tanabe T, Hawkes CM, Soni N, Watson AT, Koch H, Schroeder T, Asgeirsson DJ, Hearty C, Mattison TS, McKenna JA, Barrett M, Khan A, Randle-Conde A, Blinov VE, Buzykaev AR, Druzhinin VP, Golubev VB, Onuchin AP, Serednyakov SI, Skovpen YI, Solodov EP, Todyshev KY, Yushkov AN, Bondioli M, Curry S, Kirkby D, Lankford AJ, Lund P, Mandelkern M, Martin EC, Stoker DP, Atmacan H, Gary JW, Liu F, Long O, Vitug GM, Yasin Z, Sharma V, Campagnari C, Hong TM, Kovalskyi D, Richman JD, Eisner AM, Heusch CA, Kroseberg J, Lockman WS, Martinez AJ, Schalk T, Schumm BA, Seiden A, Winstrom LO, Cheng CH, Doll DA, Echenard B, Hitlin DG, Ongmongkolkul P, Porter FC, Rakitin AY, Andreassen R, Dubrovin MS, Mancinelli G, Meadows BT, Sokoloff MD, Bloom PC, Ford WT, Gaz A, Hirschauer JF, Nagel M, Nauenberg U, Smith JG, Wagner SR, Ayad R, Toki WH, Feltresi E, Hauke A, Jasper H, Karbach TM, Merkel J, Petzold A, Spaan B, Wacker K, Kobel MJ, Schubert KR, Schwierz R, Bernard D, Verderi M, Clark PJ, Playfer S, Watson JE, Andreotti M, Bettoni D, Bozzi C, Calabrese R, Cecchi A, Cibinetto G, Fioravanti E, Franchini P, Luppi E, Munerato M, Negrini M, Petrella A, Piemontese L, Santoro V, Baldini-Ferroli R, Calcaterra A, de Sangro R, Finocchiaro G, Nicolaci M, Pacetti S, Patteri P, Peruzzi IM, Piccolo M, Rama M, Zallo A, Contri R, Guido E, Lo Vetere M, Monge MR, Passaggio S, Patrignani C, Robutti E, Tosi S, Bhuyan B, Morii M, Adametz A, Marks J, Schenk S, Uwer U, Bernlochner FU, Lacker HM, Lueck T, Volk A, Dauncey PD, Tibbetts M, Behera PK, Charles MJ, Mallik U, Chen C, Cochran J, Crawley HB, Dong L, Meyer WT, Prell S, Rosenberg EI, Rubin AE, Gao YY, Gritsan AV, Guo ZJ, Arnaud N, Davier M, Derkach D, Firmino da Costa J, Grosdidier G, Le Diberder F, Lepeltier V, Lutz AM, Malaescu B, Roudeau P, Schune MH, Serrano J, Sordini V, Stocchi A, Wang L, Wormser G, Lange DJ, Wright DM, Bingham I, Burke JP, Chavez CA, Fry JR, Gabathuler E, Gamet R, Hutchcroft DE, Payne DJ, Touramanis C, Bevan AJ, Di Lodovico F, Sacco R, Sigamani M, Cowan G, Paramesvaran S, Wren AC, Brown DN, Davis CL, Denig AG, Fritsch M, Gradl W, Hafner A, Alwyn KE, Bailey D, Barlow RJ, Jackson G, Lafferty GD, West TJ, Anderson J, Jawahery A, Roberts DA, Simi G, Tuggle JM, Dallapiccola C, Salvati E, Cowan R, Dujmic D, Fisher PH, Henderson SW, Sciolla G, Spitznagel M, Yamamoto RK, Zhao M, Patel PM, Robertson SH, Schram M, Biassoni P, Lazzaro A, Lombardo V, Palombo F, Stracka S, Cremaldi L, Godang R, Kroeger R, Sonnek P, Summers DJ, Zhao HW, Nguyen X, Simard M, Taras P, De Nardo G, Monorchio D, Onorato G, Sciacca C, Raven G, Snoek HL, Jessop CP, Knoepfel KJ, LoSecco JM, Wang WF, Corwin LA, Honscheid K, Kass R, Morris JP, Rahimi AM, Sekula SJ, Blount NL, Brau J, Frey R, Igonkina O, Kolb JA, Lu M, Rahmat R, Sinev NB, Strom D, Strube J, Torrence E, Castelli G, Gagliardi N, Margoni M, Morandin M, Posocco M, Rotondo M, Simonetto F, Stroili R, del Amo Sanchez P, Ben-Haim E, Bonneaud GR, Briand H, Chauveau J, Hamon O, Leruste P, Marchiori G, Ocariz J, Perez A, Prendki J, Sitt S, Biasini M, Manoni E, Angelini C, Batignani G, Bettarini S, Calderini G, Carpinelli M, Cervelli A, Forti F, Giorgi MA, Lusiani A, Neri N, Paoloni E, Rizzo G, Walsh JJ, Lopes Pegna D, Lu C, Olsen J, Smith AJS, Telnov AV, Anulli F, Baracchini E, Cavoto G, Faccini R, Ferrarotto F, Ferroni F, Gaspero M, Jackson PD, Li Gioi L, Mazzoni MA, Piredda G, Renga F, Ebert M, Hartmann T, Schröder H, Waldi R, Adye T, Franek B, Olaiya EO, Wilson FF, Emery S, Hamel de Monchenault G, Vasseur G, Yèche C, Zito M, Allen MT, Aston D, Bard DJ, Bartoldus R, Benitez JF, Cenci R, Coleman JP, Convery MR, Dingfelder JC, Dorfan J, Dubois-Felsmann GP, Dunwoodie W, Field RC, Franco Sevilla M, Fulsom BG, Gabareen AM, Graham MT, Grenier P, Hast C, Innes WR, Kaminski J, Kelsey MH, Kim H, Kim P, Kocian ML, Leith DWGS, Li S, Lindquist B, Luitz S, Luth V, Lynch HL, MacFarlane DB, Marsiske H, Messner R, Muller DR, Neal H, Nelson S, O'Grady CP, Ofte I, Perl M, Ratcliff BN, Roodman A, Salnikov AA, Schindler RH, Schwiening J, Snyder A, Su D, Sullivan MK, Suzuki K, Swain SK, Thompson JM, Va'vra J, Wagner AP, Weaver M, West CA, Wisniewski WJ, Wittgen M, Wright DH, Wulsin HW, Yarritu AK, Young CC, Ziegler V, Chen XR, Liu H, Park W, Purohit MV, White RM, Wilson JR, Bellis M, Burchat PR, Edwards AJ, Miyashita TS, Ahmed S, Alam MS, Ernst JA, Pan B, Saeed MA, Zain SB, Guttman N, Soffer A, Spanier SM, Wogsland BJ, Eckmann R, Ritchie JL, Ruland AM, Schilling CJ, Schwitters RF, Wray BC, Drummond BW, Izen JM, Lou XC, Bianchi F, Gamba D, Pelliccioni M, Bomben M, Cartaro C, Della Ricca G, Lanceri L, Vitale L, Azzolini V, Lopez-March N, Martinez-Vidal F, Milanes DA, Oyanguren A, Albert J, Banerjee S, Choi HHF, Hamano K, King GJ, Kowalewski R, Lewczuk MJ, Nugent IM, Roney JM, Sobie RJ, Gershon TJ, Harrison PF, Ilic J, Latham TE, Mohanty GB, Puccio EMT, Band HR, Chen X, Dasu S, Flood KT, Pan Y, Prepost R, Vuosalo CO, Wu SL. Search for charged lepton flavor violation in narrow upsilon decays. PHYSICAL REVIEW LETTERS 2010; 104:151802. [PMID: 20481982 DOI: 10.1103/physrevlett.104.151802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2010] [Indexed: 05/29/2023]
Abstract
Charged-lepton flavor-violating processes are unobservable in the standard model, but they are predicted to be enhanced in several extensions to the standard model, including supersymmetry and models with leptoquarks or compositeness. We present a search for such processes in a sample of 99x10(6)Upsilon(2S) decays and 117x10(6)Upsilon(3S) decays collected with the BABAR detector. We place upper limits on the branching fractions B(Upsilon(nS)-->e(+/-)tau(-/+)) and B(Upsilon(nS)-->mu(+/-)tau(-/+)) (n=2,3) at the 10(-6) level and use these results to place lower limits of order 1 TeV on the mass scale of charged-lepton flavor-violating effective operators.
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Zhao HW, Sun LT, Lu W, Zhang XZ, Guo XH, Cao Y, Zhao HY, Feng YC, Li JY, Ma HY, Shang Y, Ma BH, Wang H, Li XX, Xie DZ. New development of advanced superconducting electron cyclotron resonance ion source SECRAL (invited). THE REVIEW OF SCIENTIFIC INSTRUMENTS 2010; 81:02A202. [PMID: 20192321 DOI: 10.1063/1.3273058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Superconducting electron cyclotron resonance ion source with advance design in Lanzhou (SECRAL) is an 18-28 GHz fully superconducting electron cyclotron resonance (ECR) ion source dedicated for highly charged heavy ion beam production. SECRAL, with an innovative superconducting magnet structure of solenoid-inside-sextupole and at lower frequency and lower rf power operation, may open a new way for developing compact and reliable high performance superconducting ECR ion source. One of the recent highlights achieved at SECRAL is that some new record beam currents for very high charge states were produced by 18 GHz or 18+14.5 GHz double frequency heating, such as 1 e microA of (129)Xe(43+), 22 e microA of (209)Bi(41+), and 1.5 e microA of (209)Bi(50+). To further enhance the performance of SECRAL, a 24 GHz/7 kW gyrotron microwave generator was installed and SECRAL was tested at 24 GHz. Some promising and exciting results at 24 GHz with new record highly charged ion beam intensities were produced, such as 455 e microA of (129)Xe(27+) and 152 e microA of (129)Xe(30+), although the commissioning time was limited within 3-4 weeks and rf power only 3-4 kW. Bremsstrahlung measurements at 24 GHz show that x-ray is much stronger with higher rf frequency, higher rf power. and higher minimum mirror magnetic field (minimum B). Preliminary emittance measurements indicate that SECRAL emittance at 24 GHz is slightly higher that at 18 GHz. SECRAL has been put into routine operation at 18 GHz for heavy ion research facility in Lanzhou (HIRFL) accelerator complex since May 2007. The total operation beam time from SECRAL for HIRFL accelerator has been more than 2000 h, and (129)Xe(27+), (78)Kr(19+), (209)Bi(31+), and (58)Ni(19+) beams were delivered. All of these new developments, the latest results, and long-term operation for the accelerator have again demonstrated that SECRAL is one of the best in the performance of ECR ion source for highly charged heavy ion beam production. Finally the future development of SECRAL will be presented.
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Sun LT, Zhao HW, Lu W, Zhang XZ, Feng YC, Li JY, Cao Y, Guo XH, Ma HY, Zhao HY, Shang Y, Ma BH, Wang H, Li XX, Jin T, Xie DZ. Production of highly charged ion beams with SECRAL. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2010; 81:02A318. [PMID: 20192339 DOI: 10.1063/1.3267306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Superconducting electron cyclotron resonance ion source with advanced design in Lanzhou (SECRAL) is an all-superconducting-magnet electron cyclotron resonance ion source (ECRIS) for the production of intense highly charged ion beams to meet the requirements of the Heavy Ion Research Facility in Lanzhou (HIRFL). To further enhance the performance of SECRAL, an aluminum chamber has been installed inside a 1.5 mm thick Ta liner used for the reduction of x-ray irradiation at the high voltage insulator. With double-frequency (18+14.5 GHz) heating and at maximum total microwave power of 2.0 kW, SECRAL has successfully produced quite a few very highly charged Xe ion beams, such as 10 e microA of Xe(37+), 1 e microA of Xe(43+), and 0.16 e microA of Ne-like Xe(44+). To further explore the capability of the SECRAL in the production of highly charged heavy metal ion beams, a first test run on bismuth has been carried out recently. The main goal is to produce an intense Bi(31+) beam for HIRFL accelerator and to have a feel how well the SECRAL can do in the production of very highly charged Bi beams. During the test, though at microwave power less than 3 kW, more than 150 e microA of Bi(31+), 22 e microA of Bi(41+), and 1.5 e microA of Bi(50+) have been produced. All of these results have again demonstrated the great capability of the SECRAL source. This article will present the detailed results and brief discussions to the production of highly charged ion beams with SECRAL.
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Aubert B, Karyotakis Y, Lees JP, Poireau V, Prencipe E, Prudent X, Tisserand V, Garra Tico J, Grauges E, Martinelli M, Palano A, Pappagallo M, Eigen G, Stugu B, Sun L, Battaglia M, Brown DN, Hooberman B, Kerth LT, Kolomensky YG, Lynch G, Osipenkov IL, Tackmann K, Tanabe T, Hawkes CM, Soni N, Watson AT, Koch H, Schroeder T, Asgeirsson DJ, Hearty C, Mattison TS, McKenna JA, Barrett M, Khan A, Randle-Conde A, Blinov VE, Bukin AD, Buzykaev AR, Druzhinin VP, Golubev VB, Onuchin AP, Serednyakov SI, Skovpen YI, Solodov EP, Todyshev KY, Bondioli M, Curry S, Eschrich I, Kirkby D, Lankford AJ, Lund P, Mandelkern M, Martin EC, Stoker DP, Atmacan H, Gary JW, Liu F, Long O, Vitug GM, Yasin Z, Sharma V, Campagnari C, Hong TM, Kovalskyi D, Mazur MA, Richman JD, Beck TW, Eisner AM, Heusch CA, Kroseberg J, Lockman WS, Martinez AJ, Schalk T, Schumm BA, Seiden A, Wang L, Winstrom LO, Cheng CH, Doll DA, Echenard B, Fang F, Hitlin DG, Narsky I, Ongmongkolkul P, Piatenko T, Porter FC, Andreassen R, Mancinelli G, Meadows BT, Mishra K, Sokoloff MD, Bloom PC, Ford WT, Gaz A, Hirschauer JF, Nagel M, Nauenberg U, Smith JG, Wagner SR, Ayad R, Toki WH, Feltresi E, Hauke A, Jasper H, Karbach TM, Merkel J, Petzold A, Spaan B, Wacker K, Kobel MJ, Nogowski R, Schubert KR, Schwierz R, Bernard D, Latour E, Verderi M, Clark PJ, Playfer S, Watson JE, Andreotti M, Bettoni D, Bozzi C, Calabrese R, Cecchi A, Cibinetto G, Fioravanti E, Franchini P, Luppi E, Munerato M, Negrini M, Petrella A, Piemontese L, Santoro V, Baldini-Ferroli R, Calcaterra A, de Sangro R, Finocchiaro G, Pacetti S, Patteri P, Peruzzi IM, Piccolo M, Rama M, Zallo A, Contri R, Guido E, Lo Vetere M, Monge MR, Passaggio S, Patrignani C, Robutti E, Tosi S, Morii M, Adametz A, Marks J, Schenk S, Uwer U, Bernlochner FU, Lacker HM, Lueck T, Volk A, Dauncey PD, Tibbetts M, Behera PK, Charles MJ, Mallik U, Cochran J, Crawley HB, Dong L, Eyges V, Meyer WT, Prell S, Rosenberg EI, Rubin AE, Gao YY, Gritsan AV, Guo ZJ, Arnaud N, D'Orazio A, Davier M, Derkach D, Firmino da Costa J, Grosdidier G, Le Diberder F, Lepeltier V, Lutz AM, Malaescu B, Roudeau P, Schune MH, Serrano J, Sordini V, Stocchi A, Wormser G, Lange DJ, Wright DM, Bingham I, Burke JP, Chavez CA, Fry JR, Gabathuler E, Gamet R, Hutchcroft DE, Payne DJ, Touramanis C, Bevan AJ, Clarke CK, Di Lodovico F, Sacco R, Sigamani M, Cowan G, Paramesvaran S, Wren AC, Brown DN, Davis CL, Denig AG, Fritsch M, Gradl W, Hafner A, Alwyn KE, Bailey D, Barlow RJ, Jackson G, Lafferty GD, West TJ, Yi JI, Anderson J, Chen C, Jawahery A, Roberts DA, Simi G, Tuggle JM, Dallapiccola C, Salvati E, Cowan R, Dujmic D, Fisher PH, Henderson SW, Sciolla G, Spitznagel M, Yamamoto RK, Zhao M, Patel PM, Robertson SH, Schram M, Biassoni P, Lazzaro A, Lombardo V, Palombo F, Stracka S, Cremaldi L, Godang R, Kroeger R, Sonnek P, Summers DJ, Zhao HW, Nguyen X, Simard M, Taras P, Nicholson H, De Nardo G, Lista L, Monorchio D, Onorato G, Sciacca C, Raven G, Snoek HL, Jessop CP, Knoepfel KJ, Losecco JM, Wang WF, Corwin LA, Honscheid K, Kagan H, Kass R, Morris JP, Rahimi AM, Sekula SJ, Blount NL, Brau J, Frey R, Igonkina O, Kolb JA, Lu M, Rahmat R, Sinev NB, Strom D, Strube J, Torrence E, Castelli G, Gagliardi N, Margoni M, Morandin M, Posocco M, Rotondo M, Simonetto F, Stroili R, Voci C, Del Amo Sanchez P, Ben-Haim E, Bonneaud GR, Briand H, Chauveau J, Hamon O, Leruste P, Marchiori G, Ocariz J, Perez A, Prendki J, Sitt S, Gladney L, Biasini M, Manoni E, Angelini C, Batignani G, Bettarini S, Calderini G, Carpinelli M, Cervelli A, Forti F, Giorgi MA, Lusiani A, Morganti M, Neri N, Paoloni E, Rizzo G, Walsh JJ, Lopes Pegna D, Lu C, Olsen J, Smith AJS, Telnov AV, Anulli F, Baracchini E, Cavoto G, Faccini R, Ferrarotto F, Ferroni F, Gaspero M, Jackson PD, Li Gioi L, Mazzoni MA, Morganti S, Piredda G, Renga F, Voena C, Ebert M, Hartmann T, Schröder H, Waldi R, Adye T, Franek B, Olaiya EO, Wilson FF, Emery S, Esteve L, Hamel de Monchenault G, Kozanecki W, Vasseur G, Yèche C, Zito M, Allen MT, Aston D, Bard DJ, Bartoldus R, Benitez JF, Cenci R, Coleman JP, Convery MR, Dingfelder JC, Dorfan J, Dubois-Felsmann GP, Dunwoodie W, Field RC, Franco Sevilla M, Fulsom BG, Gabareen AM, Graham MT, Grenier P, Hast C, Innes WR, Kaminski J, Kelsey MH, Kim H, Kim P, Kocian ML, Leith DWGS, Li S, Lindquist B, Luitz S, Luth V, Lynch HL, Macfarlane DB, Marsiske H, Messner R, Muller DR, Neal H, Nelson S, O'Grady CP, Ofte I, Perl M, Ratcliff BN, Roodman A, Salnikov AA, Schindler RH, Schwiening J, Snyder A, Su D, Sullivan MK, Suzuki K, Swain SK, Thompson JM, Va'vra J, Wagner AP, Weaver M, West CA, Wisniewski WJ, Wittgen M, Wright DH, Wulsin HW, Yarritu AK, Young CC, Ziegler V, Chen XR, Liu H, Park W, Purohit MV, White RM, Wilson JR, Bellis M, Burchat PR, Edwards AJ, Miyashita TS, Ahmed S, Alam MS, Ernst JA, Pan B, Saeed MA, Zain SB, Soffer A, Spanier SM, Wogsland BJ, Eckmann R, Ritchie JL, Ruland AM, Schilling CJ, Schwitters RF, Wray BC, Drummond BW, Izen JM, Lou XC, Bianchi F, Gamba D, Pelliccioni M, Bomben M, Bosisio L, Cartaro C, Della Ricca G, Lanceri L, Vitale L, Azzolini V, Lopez-March N, Martinez-Vidal F, Milanes DA, Oyanguren A, Albert J, Banerjee S, Bhuyan B, Choi HHF, Hamano K, King GJ, Kowalewski R, Lewczuk MJ, Lindsay CD, Locke CB, Nugent IM, Roney JM, Sobie RJ, Gershon TJ, Harrison PF, Ilic J, Latham TE, Mohanty GB, Puccio EMT, Band HR, Chen X, Dasu S, Flood KT, Pan Y, Prepost R, Vuosalo CO, Wu SL. Searches for Lepton flavor violation in the decays tau{+/-}-->e{+/-}gamma and tau{+/-}-->mu{+/-}gamma. PHYSICAL REVIEW LETTERS 2010; 104:021802. [PMID: 20366586 DOI: 10.1103/physrevlett.104.021802] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2009] [Indexed: 05/29/2023]
Abstract
Searches for lepton-flavor-violating decays of a tau lepton to a lighter mass lepton and a photon have been performed with the entire data set of (963+/-7)x10{6} tau decays collected by the BABAR detector near the Upsilon(4S), Upsilon(3S) and Upsilon(2S) resonances. The searches yield no evidence of signals and we set upper limits on the branching fractions of B(tau{+/-}-->e{+/-}gamma)<3.3x10{-8} and B(tau{+/-}-->mu{+/-}gamma)<4.4x10{-8} at 90% confidence level.
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