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Experimental investigation of the transition energy gamma(t) in the isochronous mode of the HIRFL-CSRe

文献类型：期刊论文

作者Ge, W. W.1,2; Yuan, Y. J.1; Yang, J. C.1; Chen, R. J.1; Yan, X. L.; Du, H.1; Li, Z. S.1,2; Yang, J.1; Yin, D. Y.1; Mao, L. J.1
刊名NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
出版日期2018-11-11
卷号908页码:388-393
ISSN号0168-9002
关键词Isochronous Mass Spectrometry Transition energy Two-TOF detector system Nonlinear momentum compaction factor First and second-order isochronous correction
DOI10.1016/j.nima.2018.08.059
英文摘要The Isochronous Mass Spectrometry (IMS) based on storage rings is a powerful technique for mass measurement of short-lived exotic nuclei. The transition energy gamma(t) of the storage ring is a vital parameter of the IMS technique. It is difficult to measure the gamma(t) and its relation to momentum spread or circulating length, especially to monitor the variation of gamma(t) during experiments. An experimental investigation on the gamma(t) has been performed for the IMS experiment at the Cooler Storage Ring of the Heavy Ion Research Facility in Lanzhou (HIRFL-CSRe). With the velocity measured by two time-of-flight (TOF) detectors, the gamma(t) as a function of orbital length can be determined. The influences of higher order magnetic field components on the gamma(t) function were inferred for isochronous correction. This paper introduces and investigates the influence of dipole magnetic fields, quadrupole magnetic fields and sextupole magnetic fields on the gamma(t) function. With the quadrupole magnets and sextupole magnets corrections, a mass resolution of 171332 (FWHM) and sigma(T)/T = 1.34 x 10(-6) were reached, which shall be compared with 31319 (FWHM) and sigma(T)/T = 7.35 x 10(-6) obtained without correction.
WOS关键词DIRECT MASS MEASUREMENTS ; FRS-ESR-FACILITY ; CR STORAGE-RING ; EXOTIC NUCLEI ; SPECTROMETRY ; IONS ; GSI
资助项目European Research Council (ERC) under European Union's Horizon 2020 research and innovation programme[682841]
WOS研究方向Instruments & Instrumentation ; Nuclear Science & Technology ; Physics
语种英语
出版者ELSEVIER SCIENCE BV
WOS记录号WOS:000446864600050
源URL[http://119.78.100.186/handle/113462/64389]  
专题中国科学院近代物理研究所
通讯作者Yuan, Y. J.
作者单位1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.GSI Helmholtzzentrum Schwerionenforsch, Planckstr 1, D-64291 Darmstadt, Germany
4.Univ Paris Saclay, Univ Paris Sud, CNRS, CSNSM,IN2P3, F-91405 Orsay, France
5.East China Univ Technol, Sch Nucl Sci & Engn, Nanchang 330013, Jiangxi, Peoples R China
推荐引用方式
GB/T 7714		 Ge, W. W.,Yuan, Y. J.,Yang, J. C.,et al. Experimental investigation of the transition energy gamma(t) in the isochronous mode of the HIRFL-CSRe[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2018,908:388-393.
APA Ge, W. W..,Yuan, Y. J..,Yang, J. C..,Chen, R. J..,Yan, X. L..,...&Zhou, X..(2018).Experimental investigation of the transition energy gamma(t) in the isochronous mode of the HIRFL-CSRe.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,908,388-393.
MLA Ge, W. W.,et al."Experimental investigation of the transition energy gamma(t) in the isochronous mode of the HIRFL-CSRe".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 908(2018):388-393.

入库方式： OAI收割

来源：近代物理研究所

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