Development of water Čerenkov detector for on-line proton rejection in Ξ - hypernuclear spectroscopy via the (K - ,K + ) reaction
Development of water Čerenkov detector for on-line proton rejection in Ξ - hypernuclear spectroscopy via the (K - ,K + ) reaction
复制标题
开发水切伦科夫探测器，通过 (K - ,K + ) 反应在 Ξ - 超核光谱中实现在线质子排斥
DOI：
10.1016/j.nima.2016.02.021
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发表时间：
2015
影响因子：
1.4
通讯作者：
K. Takenaka
中科院分区：
文献类型：
--
作者：
T. Gogami;N. Amano;S. Kanatsuki;T. Nagae;K. Takenaka
缺失的具有（K-，K+）反应的超核的质谱学计划在J-PARC K1进行。8束线的磁谱仪，S-2S型磁谱仪。设计了一个以纯水（折射率1.33）为辐射介质的Čerenkov探测器，用于S-2S中动量范围为1.2- 1.6GeV/c的在线质子排斥。原型水切伦科夫探测器的开发和测试与正电子束和宇宙射线，以估计其质子排斥能力。我们用最新的宇宙射线原型实现了平均超过200个光电子，在一个月的预期光束时间内保持稳定。在宇宙射线测试中的原型的性能很好地再现与Monte Carlo模拟，其中一些输入参数进行了调整。基于Monte Carlo模拟，我们期望在整个S-2S接受中实现> 90%的质子排斥效率，同时保持> 95%的K+存活率。性能满足在J-PARC进行超核谱学研究的要求。
The missing mass spectroscopy of Ξ− hypernuclei with the (K−, K+) reaction is planned to be performed at the J-PARC K1. 8 beam line by using a new magnetic spectrometer, Strangeness-2 Spectrometer (S-2S). A Čerenkov detector with a radiation medium of pure water (refractive index of 1.33) is designed to be used for on-line proton rejection for a momentum range of 1.2–1.6 GeV/c in S-2S. Prototype water Čerenkov detectors were developed and tested with positron beams and cosmic rays to estimate their proton-rejection capability. We achieved an average number of photoelectrons of greater than 200 with the latest prototype for cosmic rays, which was stable during an expected beam time of one month. The performance of the prototype in the cosmic-ray test was well reproduced with a Monte Carlo simulation in which some input parameters were adjusted. Based on the Monte Carlo simulation, we expect to achieve> 90% proton-rejection efficiency while maintaining> 95% K+ survival ratio in the whole S-2S acceptance. The performance satisfies the requirements to conduct the spectroscopic study of Ξ− hypernuclei at J-PARC.
J-PARC 探索非奇异二重子共振
DOI：
--
发表时间：
2022
期刊：
影响因子：
--
作者：
Cai Yi-Fu;Jiang Jie;Sasaki Misao;Vardanyan Valeri (corresponding author);Zhou Zihan;中村 克朗;Takatsugu Ishikawa
通讯作者：
Takatsugu Ishikawa
DOI：
10.1016/j.nima.2012.08.085
发表时间：
2012-12
影响因子：
1.4
作者：
T. Ishikawa;H. Fujimura;R. Hashimoto;S. Kaida;J. Kasagi;R. Kitazawa;S. Kuwasaki;A. Nakamura;K. Nawa;Y. Okada;M. Sato;H. Shimizu;Koutaku Suzuki;Y. Tajima;Shinichiro Takahashi;Y. Tsuchikawa;H. Yamazaki;H. Yoshida
通讯作者：
T. Ishikawa;H. Fujimura;R. Hashimoto;S. Kaida;J. Kasagi;R. Kitazawa;S. Kuwasaki;A. Nakamura;K. Nawa;Y. Okada;M. Sato;H. Shimizu;Koutaku Suzuki;Y. Tajima;Shinichiro Takahashi;Y. Tsuchikawa;H. Yamazaki;H. Yoshida
ELPH 的第二条 GeV 标记光子束线
DOI：
--
发表时间：
2010
期刊：
Nucl. Instr. Meth.
影响因子：
--
作者：
T.Ishikawa(1/27);H.Fujimura(2/27);J.Kasagi(5/27);H.Shimizu(20/27);H.Yamazaki(25/27) et al.
通讯作者：
H.Yamazaki(25/27) et al.