Development of a MWDC prototype of the CSR external-target experiment  

作　　者：Zhou-Bo He Zhi Qin Peng Ma He-Run Yang Xiang-Lun Wei Chen-Gui Lu Xiang-Jie Wen Xiu-Ling Zhang Tao Chen Zhi-Jie Li Yuan-Sheng Yang Mei-Qiang Zhan Can-Wen Liu Meng Li Tian-Li Qiu Yi-Wei Gong Xin-Jie Huang Xiao-Hao Yin Zhi-Xuan He Jun-Wei Zhang Hai-Chuan Zou Sheng-Wei Fu Dong Guo Jun-Wei Yan Zhe Cao Zhi Deng Jie Kong Zhi-Gang Xiao Rong-Jiang Hu Li-Min Duan 

机构地区：[1]Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China [2]School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 100049,China [3]Department of Physics,Tsinghua University,Beijing 100084,China [4]University of Science and Technology of China,Hefei 230026,China [5]Key Laboratory of Radiation Physics and Technology of the Ministry of Education,Institute of Nuclear Science and Technology,Sichuan University,Chengdu 610064,China [6]School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China [7]North China University of Water Resources and Electric Power,Zhengzhou 450000,China

出　　处：《Nuclear Science and Techniques》2024年第10期121-134,共14页核技术（英文）

基　　金：supported by the Research Program of the National Major Research Instruments(No.11927901);Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB34000000);the Function Development Project of Chinese Academy of Sciences(No.2022G101);National Key R&D Program of China(No.2018YFE0205200);Natural Science Foundation of China(Nos.11875301,11875302,U1867214,U1832105,U1832167);CAS"Light of West China"Program。

摘　　要：The cooling storage ring(CSR)external-target experiment(CEE)is a spectrometer used in construction to study the properties of nuclear matter in high-baryon density regions at the Heavy-Ion Research Facility in Lanzhou(HIRFL).This study presents the design,simulation,manufacturing,and testing of a half-size prototype of a multi-wire drift chamber(MWDC)for the CEE.First,the performance of the MWDC connected to homemade electronics was simulated.The results demonstrated that an energy resolution of 18.5% for 5.9-keV X-rays and a position resolution of 194μm for protons can be achieved by the current design.Because the size of the largest MWDC reached 176 cm×314 cm,a set of 98 cm×98 cm prototypes was built using the new techniques.The positioning accuracy of the anode wires in this prototype is better than 20μm.After optimization,using commercially available electronics,the prototype can achieved an energy resolution of 19.7%for a^(55)Fe X-ray source.The CEE-MWDC detector and electronics were simultaneously tested.An energy resolution of 22%was achieved for the^(55)Fe source;the track residuals were approximately 330μm for the cosmic rays.The results demonstrate that the current design and techniques meet the requirements of the CEE-MWDC array.

关 键 词：CEE MWDC Garfield++ ^(55)Fe source Position resolution 

分 类 号：O571.6[理学—粒子物理与原子核物理]