Nuclear Techniques ›› 2015, Vol. 38 ›› Issue (2): 20501-020501.doi: 10.11889/j.0253-3219.2015.hjs.38.020501


Pulse shape discrimination and energy calibration of EJ301 liquid scintillation detector

CHANG Le1,2 LIU Yingdu1,3 DU Long1,3 WANG Yuting1,3 CAO Xiguang1,4 ZHANG Guoqiang1,4 WANG Hongwei1,3,4 MA Chunwang2 ZHANG Song1,4 ZHONG Chen1,4 LI Chen1,4   

  1. 1(Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China) 2(Institute of Particle Physics and Nuclear Physics, Henan Normal University, Xinxiang 453007, China) 3(University of Chinese Academy of Sciences, Beijing 100049, China) 4(Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Chinese Academy of Sciences, Shanghai 201800, China)
  • Received:2014-06-09 Revised:2014-07-18 Online:2015-02-10 Published:2015-02-02

Abstract: Background: EJ301 liquid scintillation detector has good time characteristics, pulse shape discrimination ability and the neutron detection efficiency. Purpose: This study aims to achieve the energy calibration, the pulse shape discrimination (PSD) ability etc. of EJ301 organic liquid scintillation detector. Methods: The waveform digital sampler DT5720 and digital pulse processing-pulse shape discrimination (DPP-PSD) control software were employed to simplify the data acquisition system. The pulse shape discrimination parameters such as the widths of long and short gates could be set up by software. The Compton peaks of 241Am (0.0595MeV), 137Cs-60Co (0.662 MeV, 1.171MeV, 0.662 MeV) and 40K (1.461 MeV) sources were used to obtain experimental data for pulse shape discrimination and the energy calibration of EJ301. Results: Experimental results show EJ301 detector has high efficiency, strong neutron/gamma-PSD ability. Conclusion: DT5720 and DPP-PSD control software have powerful function and are easy to use for both the PSD and energy calibration of EJ301. EJ301 organic liquid scintillation detector can be used for neutron measurement, and is suitable for measuring fast neutron energy spectrum and time of flight.

Key words: Scintillation detector, Compton scattering, Gamma sources, Energy calibration