Matter and Radiation at Extremes, 2018, 3 (4): 219, Published Online: Jul. 13, 2020  

High energy and high brightness laser compton backscattering gamma-ray source at IHEP

Author Affiliations
1 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2 State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics, CAS, Beijing 100049, China
3 China Institute of Atomic Energy, Beijing 102413, China
4 College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China
5 Physics and Space Science College, China West Normal University, Nanchong 637009, China
6 Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, China
Abstract
Based on the LINAC of BEPCII, a high-polarized, high bightness, energy-tunable, monoenergetic laser compton backscattering (LCS) gamma-ray source is under construction at IHEP. The gamma-ray energy range is from 1 MeV to 111 MeV. It is a powerful and hopeful research platform to reveal the underlying physics of the nuclear, the basic particles and the vacuum or to check the exist basic physical models, quantum electrodynamic (QED) theories. In the platform, a 1.064 mm Nd:YAG laser system and a 10.6 mm CO2 laser system are employed. All the trigger signals to the laser system and the electron control system are from the only reference clock at the very beginning of the LINAC to make sure the temporal synchronization. Two optical transition radiation (OTR) targets and two charged-couple devices (CCD) are used to monitor and to align the electron beam and the laser beam. With the LCS gamma-ray source, it is proposed to experimentally check the gamma-ray calibrations, the photon-nuclear physics, nuclear astrophysics and some basic QED phenomena.

Guang-Peng An, Yun-Long Chi, Yong-Le Dang, Guang-Yong Fu, Bing Guo, Yong-Sheng Huang, Chuang-Ye He, Xiang-Cheng Kong, Xiao-Fei Lan, Jia-Cai Li, Fu-Long Liu, Jin-Shui Shi, Xian-Jing Sun, Yi Wang, Jian-Li Wang, Lin Wang, Yuan-Yuan Wei, Gang Wu, Guang-Lei Xu, Xiao-Feng Xi, Guo-Jun Yang, Chun-Lei Zhang, Zhuo Zhang, Zhi-Peng Zheng, Xiao-Ding Zhang, Shao-Ping Zhang. High energy and high brightness laser compton backscattering gamma-ray source at IHEP[J]. Matter and Radiation at Extremes, 2018, 3(4): 219.

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