Construction and performance test of charged particle detector array for MATE  

作　　者：Xiao‑Bin Li Long‑Hui Ru Zhi‑Chao Zhang Bing‑Feng Lv Ning‑Tao Zhang Jin‑Long Zhang Chen‑Gui Lu Bing‑Shui Gao Jun‑Bing Ma Fu‑Shuai Shi Satoru Terashima Xiao‑Dong Xu Zhen Bai Shi‑Wei Xu Yan‑Yun Yang Hooi‑Jin Ong Xiao‑Dong Tang 

机构地区：[1]Institute of Modern Physics(IMP),Chinese Academy of Sciences,Lanzhou 730000,China [2]School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 100049,China [3]Research Center for Nuclear Physics,Osaka University,Ibaraki,Osaka 567‑0047,Japan [4]RIKEN Nishina Center,Wako,Saitama 351‑0198,Japan [5]Joint Department for Nuclear Physics,Lanzhou University and Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China

出　　处：《Nuclear Science and Techniques》2024年第8期92-100,共9页核技术（英文）

基　　金：supported by the National Natural Science Foundation of China(Nos.12175280 and 12250610193);the National Key R&D Program of China(No.2016YFA0400500);the support of the CAS“Light of West China”Program;the support of the Natural Science Foundation of Gansu(No.23JRRA676)。

摘　　要：A charged particle array named MATE-PA,which serves as an auxiliary detector system for a Multi-purpose Active-target Time projection chamber used in nuclear astrophysical and exotic beam Experiments(MATE),was constructed.The array comprised of 20 single-sided strip-silicon detectors covering approximately 10%of the solid angle.The detectors facilitated the detection of reaction-induced charged particles that penetrate the active volume of the MATE.The performance of MATE-PA has been experimentally studied using an alpha source and a 36-MeV 14 N beam injected into the MATE chamber on the radioactive ion beam line in Lanzhou(RIBLL).The chamber was filled with a gas mixture of 95%4 He and 5%CO_(2) at a pressure of 500 mbar.The results indicated good separation of light-charged particles using the forward double-layer silicon detectors of MATE-PA.The energy resolution of the Si detectors was deduced to be approximately 1%(σ)for an energy loss of approximately 10 MeV caused by theαparticles.The inclusion of MATE-PA improves particle identification and increases the dynamic range of the kinetic energy of charged particles,particularly that of theαparticles,up to approximately 15 MeV.

关 键 词：Silicon detector array Active target Time projection chamber 

分 类 号：P14[天文地球—天体物理]