Fudan multi-purpose active target time projection chamber(fMeta-TPC)for photonuclear reaction experiments  

作　　者：Huang-Kai Wu Xi-Yang Wang Yu-Miao Wang You-Jing Wang De-Qing Fang Wan-Bing He Wei-Hu Ma Xi-Guang Cao Chang-Bo Fu Xian-Gai Deng Yu-Gang Ma 

机构地区：[1]Key Laboratory of Nuclear Physics and Ion‑Beam Application(MOE),Institute of Modern Physics,Fudan University,Shanghai 200433,China [2]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China [3]University of Chinese Academy of Sciences,Beijing 100049,China [4]Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210,China [5]Shanghai Research Center for Theoretical Nuclear Physics,NSFC and Fudan University,Shanghai 200438,China

出　　处：《Nuclear Science and Techniques》2024年第11期140-151,共12页核技术（英文）

基　　金：supported by the National Key R&D Program of China(Nos.2022YFA1602402,2020YFE0202001,2023YFA1606900);the National Natural Science Foundation of China(NSFC)(Nos.12235003,11835002,11925502,11705031,12275053,12147101).

摘　　要：Active target time projection chambers are state-of-the-art tools in the field of low-energy nuclear physics and are particularly suitable for experiments using low-intensity radioactive ion beams or gamma rays.The Fudan multi-purpose active target time projection chamber(fMeta-TPC)with 2048 channels was developed to studyα-clustering nuclei.This study focused on the photonuclear reaction with a laser Compton scattering gamma source,particularly for the decay of the highly excitedαcluster state.The design of fMeta-TPC is described in this paper.A comprehensive evaluation of its offline performance was conducted using an ultraviolet laser and ^(241)Amαsource.The results showed that the intrinsic angular resolution of the detector was within 0.30°,and the detector had an energy resolution of 6.85%for 3.0 MeVαparticles.The gain uniformity of the detector was approximately 10%(RMS/Mean),as tested by the ^(55)Fe X-ray source.

关 键 词：Active target Time projection chambers Photonuclear reaction αcluster 

分 类 号：O571[理学—粒子物理与原子核物理]