High-precision X-ray polarimeter based on channel-cut crystals

作     者：Shang-Yu Si Zhong-Liang Li Wen-Hong Jia Lian Xue Hong-Xin Luo Jian-Cai Xu Bai-Fei Shen Lin-Gang Zhang Liang-Liang Ji Yu-Xin Leng Ren-Zhong Tai Shang-Yu Si;Zhong-Liang Li;Wen-Hong Jia;Lian Xue;Hong-Xin Luo;Jian-Cai Xu;Bai-Fei Shen;Lin-Gang Zhang;Liang-Liang Ji;Yu-Xin Leng;Ren-Zhong Tai

作者机构：Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China University of Chinese Academy of SciencesBeijing 100049China Shanghai Synchrotron Radiation FacilityShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2024年第35卷第3期

页      面：30-39页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：supported by the Shanghai Municipal Science and Technology Major Project(No.2017SHZDZX02) the National Natural Science Foundation of China(No.12205360) the Youth Innovation Promotion Association of the Chinese Academy of Sciences(No.2018297) 

主　　题：X-ray polarimeter Vacuum birefringence Synchrotron radiation Channel-cut crystal 

摘      要：We report on using synthetic silicon for a high-precision X-ray polarimeter comprising a polarizer and an analyzer,each based on a monolithic channel-cut crystal used at multiple Brewster reflections with a Bragg angle very close to 45°.Experiments were performed at the BL09B bending magnet beamline of the Shanghai Synchrotron Radiation Facility using a Si(800)crystal at an X-ray energy of 12.914 keV.A polarization purity of 8.4×10^(-9)was *** result is encouraging,as the measured polarization purity is the best-reported value for the bending magnet ***,this is the firstly systematic study on the hard X-ray polarimeter in China,which is crucial for exploring new physics,such as verifying vacuum birefringence.