The light charged particle detector array at the CSNS Back-n white neutron source. (1st April 2023)

• Record Type: Journal Article
• Authors: Sun, Kang; Zhang, Guohui; Yi, Han; Fan, Ruirui; Tang, Jingyu; Jiang, Wei; Chen, Yonghao; Jiang, Haoyu; Cui, Zengqi; Hu, Yiwei; Liu, Jie; Ning, Changjun; Wang, Pengcheng; Niu, Mengchen; Long, Ze; An, Qi; Bai, Haofan; Bai, Jiangbo; Bao, Jie; Cao, Ping; Chen, Qiping; Chen, Zhen; Fan, Anchuan; Feng, Changqing; Feng, Fanzhen; Gao, Keqing; Gu, Minhao; Han, Changcai; Han, Zijie; He, Guozhu; He, Yongcheng; Hong, Yang; Huang, Hanxiong; Jia, Weihua; Jiang, Zhijie; Jin, Zhengyao; Kang, Ling; Li, Bo; Li, Chao; Li, Gong; Li, Jiawen; Li, Qiang; Li, Xiao; Li, Yang; Liu, Rong; Liu, Shubin; Luan, Guangyuan; Qi, Binbin; Ren, Jie; Ren, Zhizhou; Ruan, Xichao; Song, Zhaohui; Tan, Zhixin; Tang, Shengda; Wang, Lijiao; Wang, Zhaohui; Wen, Zhongwei; Wu, Xiaoguang; Wu, Xuan; Xie, Likun; Yang, Yiwei; Yu, Yongji; Zhang, Linhao; Zhang, Mohan; Zhang, Qiwei; Zhang, Xianpeng; Zhang, Yuliang; Zhang, Yue; Zhang, Zhiyong; Zhao, Maoyuan; Zhou, Luping; Zhou, Zhihao; Zhu, Kejun;
• Is Part Of: Journal of instrumentation. Volume 18:Number 4(2023)
• Publication Date: 2023-04-01
• Subjects: Very low-energy charged particle detectors -- Instrumentation and methods for time-of-flight (TOF) spectroscopy -- Particle identification methods; Scientific apparatus and instruments -- Periodicals; 502.84
• DOI: 10.1088/1748-0221/18/04/P04004
• Languages: English
• ISSNs: 1748-0221

Abstract

Abstract: The Back-n white neutron source at the China Spallation Neutron Source (CSNS) provides neutrons in the continuous energy region from 0.5 eV to 200 MeV. A spectrometer named Light charged Particle Detector Array (LPDA) is designed for the study of (n, lcp) reactions at Back-n. The main detector of the LPDA spectrometer, a 16-unit Δ E -Δ E - E telescope array, is composed of two arrays of 8-unit Δ E -Δ E - E telescope. Each telescope unit consists of a Low-Pressure Multi-Wire Proportional Chamber (LPMWPC), a Si-PIN detector, and a CsI(Tl) scintillator detector. In 2021, a neutron-proton ( n - p ) scattering reaction cross-section measurement experiment was accomplished as the first experiment of the telescope array. Protons can be clearly identified in the Δ E - E spectrum (LPMWPC + Si-PIN) and the Δ E - E spectrum (Si-PIN + CsI(Tl)). Cross sections of the n - p scattering reaction in the neutron energy range of several MeV are extracted. The Δ E - E method also provides new measurement opportunities for many-body neutron induced light charged-particle emission reactions.