E(+)/e(-) discrimination in liquid scintillator and its usage to suppress he-8/li-9 backgrounds | |
Cheng, Ya-Ping1,2; Wen, Liang-Jian2; Zhang, Peng2; Cao, Xing-Zhong2 | |
刊名 | Chinese physics c
![]() |
2017 | |
卷号 | 41期号:1页码:6 |
关键词 | Psd Ls Ortho-positronium |
ISSN号 | 1674-1137 |
DOI | 10.1088/1674-1137/41/1/016101 |
通讯作者 | Cheng, ya-ping(chengyp@mail.ihep.ac.cn) |
英文摘要 | Reactor neutrino experiments build large-scale detector systems to detect neutrinos. in liquid scintillator, a neutral bound state of a positron and an electron, named positronium, can be formed. the spin triplet state is called ortho-positronium (o-ps). in this article, an experiment is designed to measure the lifetime of o-ps, giving a result of 3.1 ns. a psd parameter based on photon emission time distribution (petd) was constructed to discriminate e(+)/e(-). finally, the application of e(+)/e(-) discrimination in the juno experiment is shown. it helps suppress he-8/li-9 backgrounds and improves the sensitivity by 0.6 in chi(2) analysis with an assumption of sigma=1 ns pmt transit time spread, which will bring a smearing effect to the petd. |
WOS关键词 | LIFETIME |
WOS研究方向 | Physics |
WOS类目 | Physics, Nuclear ; Physics, Particles & Fields |
语种 | 英语 |
出版者 | CHINESE PHYSICAL SOC |
WOS记录号 | WOS:000393254200016 |
内容类型 | 期刊论文 |
URI标识 | http://www.corc.org.cn/handle/1471x/2176834 |
专题 | 高能物理研究所 |
通讯作者 | Cheng, Ya-Ping |
作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Cheng, Ya-Ping,Wen, Liang-Jian,Zhang, Peng,et al. E(+)/e(-) discrimination in liquid scintillator and its usage to suppress he-8/li-9 backgrounds[J]. Chinese physics c,2017,41(1):6. |
APA | Cheng, Ya-Ping,Wen, Liang-Jian,Zhang, Peng,&Cao, Xing-Zhong.(2017).E(+)/e(-) discrimination in liquid scintillator and its usage to suppress he-8/li-9 backgrounds.Chinese physics c,41(1),6. |
MLA | Cheng, Ya-Ping,et al."E(+)/e(-) discrimination in liquid scintillator and its usage to suppress he-8/li-9 backgrounds".Chinese physics c 41.1(2017):6. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论