Performance study of THGEM-based semicylindrical TPC for intermediate-energy charge-exchange reaction experiments in inverse kinematics  

作　　者：Zhi-Xuan He Pan-Jiao Shen Jing-Yan Wang Wen-Juan Bu Zhou-Bo He Zhi-Jie Li Yuan-Sheng Yang Xiao-Lei Chen Chen-Gui Lu Peng Ma He-Run Yang Li-Min Duan Bi-Tao Hu Xiang-Lun Wei Yi Zhang 

机构地区：[1]School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China [2]Frontiers Science Center for Rare Isotopes,Lanzhou University,Lanzhou 730000,China [3]Institute of Modern Physics,Chinese Academy of Science,Lanzhou 730000,China [4]School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 101408,China

出　　处：《Nuclear Science and Techniques》2025年第5期126-139,共14页核技术(英文)

基　　金：was supported by National Key R&D Program of China(No.2022YFE0103900);the National Natural Science Foundation of China(Nos.11875301,11875302,U1867214,U1832105,U2032166 and U1832167);the Fundamental Research Funds for the Central Universities(No.lzujbky-2022-sp06);the CAS“Light of West China”Program;the Heavy Ion Research Facility in Lanzhou。

摘　　要：The semicylindrical time projection chamber(scTPC)is designed to measure the angular distribution of the cross section for intermediate-energy(3He,t)charge-exchange reactions in inverse kinematics.The scTPC prototype comprises a cathode,field cage,drift region,amplification structure based on a multilayer thick gas electron multiplier(THGEM),and a readout plane with 886 zigzag-shaped pads.The gain uniformity of the THGEM and the drift velocity of electrons were calibrated.Track recognition based on the Hough transform was then developed to reconstruct cosmic ray tracks and determine their position resolution.The position resolution of secondary particle tracks resulting from collisions between the heavy-ion beam and the 3He target was measured,yielding an x-resolution of 0.71 mm and a z-resolution of 0.73 mm.The scTPC demonstrates sufficient energy and spatial resolution to support charge-exchange reaction experiments in inverse kinematics.

关 键 词：Charge-exchange reaction Time projection chamber Track recognition Track reconstruction 

分 类 号：O572.2[理学—粒子物理与原子核物理]