Performance of the CAT-TPC based on two-dimensional readout strips

• 作者: Li-Sheng Yang Jin-Yan Xu Qi-Te Li Bin-Fei Ji Zi-Wei Cai Jia-Xing Han Shi-Wei Bai Yan-Lin Ye Xiao-Fei Yang Chen-Gui Lu Ning-Tao Zhang Xiao-Dong Tang Jian Gao Hong-Yi Wu Zhong Liu
• 来源期刊: 核技术（英文版）
• 年，卷（期）: 2021,（8）
• 所属期刊栏目: NUCLEAR ELECTRONICS AND INSTRUMENTATION
• 页码范围: 78-84
• 页数: 7页
• 语种: 英文

摘要

A gas detector 140×140×140 mm3 in size,ter-med the compact active target time projection chamber(CAT-TPC),was developed in this study to measure res-onant scattering associated with cluster structures in unstable nuclei.The CAT-TPC consists of an electronic field cage,double-thick gas-electron-multiplier foils,a general-purpose digital data acquisition system,and a newly developed two-dimensional strip-readout structure.The CAT-TPC was operated using a 4He(96％)+CO2(4％)gas mixture at 400 mbar.The working gas also serves as an active target for tracking charged particles.The overall performance of the CAT-TPC was evaluated using a collimated α-particle source.A time resolution of less than 20 ns and a position resolution of less than 0.2 mm were observed along the electron drift direction.Three-dimensional images of incident trajectories and scattering events can be clearly reconstructed under an angular res-olution of approximately 0.45 degree.