Stability test and efficiency calibration of a gadolinium-loaded liquid scintillation detector
WANG Li1, DU Qiang2, KANG Kejun1, YUE Qian1
1. Key Laboratory of Particle and Radiation Imaging of Ministry of Education, Department of Engineering Physics, Tsinghua University, Beijing 100084, China;
2. School of Physical Science and Technology, Sichuan University, Chengdu 610065, China
Abstract：The China dark matter experiment (CDEX) collaboration has developed a large gadolinium-loaded liquid scintillation detector for neutron background measurements in the China JinPing underground laboratory (CJPL). Coincidence measurements of the recoil proton and neutron capture signals are used to suppress the gamma background. This paper presents stability tests and monoenergetic neutron detection efficiency calibration of the detector. The tests show that the detector photon yield is stable. The detector has good neutron and gamma pulse shape discrimination and a highly detection efficiency. Thus, this system is suitable for low intensity fast neutron measurements in the underground laboratory.
王力, 杜强, 康克军, 岳骞. 载钆液闪探测器的稳定性测试与探测效率刻度[J]. 清华大学学报（自然科学版）, 2017, 57(7): 768-773.
WANG Li, DU Qiang, KANG Kejun, YUE Qian. Stability test and efficiency calibration of a gadolinium-loaded liquid scintillation detector. Journal of Tsinghua University(Science and Technology), 2017, 57(7): 768-773.
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2017, Vol. 57 
