Study on gamma response function of EJ301 organic liquid scintillator with GEANT4 and FLUKA  

作　　者：张苏雅拉吐 陈志强 韩瑞 刘星泉 R.Wada 林炜平 靳增雪 席印印 刘建立 石福东 

机构地区：[1]Institute of Modern Physics, Chinese Academy of Sciences [2]University of Chinese Academy of Sciences [3]Lanzhou University [4]Cyclotron Institute, Texas A&M University, College Station [5]College of Nuclear Science and Technology, Harbin Engineering University

出　　处：《Chinese Physics C》2013年第12期65-70,共6页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(11075189);100 Persons Project(0910020BR0,Y010110BR0);ADS Project 302(XDA03030200) of the Chinese Academy of Sciences

摘　　要：The gamma response function is required for energy calibration of EJ301 （5 cm in diameter and 20 cm in height） organic liquid scintillator detector by means of gamma sources. The GEANT4 and FLUKA Monte Carlo simulation packages were used to simulate the response function of the detector for standard 22Na, 60Co, 137Cs gamma sources. The simulated results showed a good agreement with experimental data by incorporating the energy resolution function to simulation codes. The energy resolution and the position of the maximum Compton electron energy were obtained by comparing measured light output distribution with simulated one. The energy resolution of the detector varied from 21.2% to 12.4% for electrons in the energy region from 0.341 MeV to 1.12 MeV. The accurate position of the maximum Compton electron energy was determined at the position 81% of maximum height of Compton edges distribution. In addition, the relation of the electron energy calibration and the effective neutron detection thresholds were described in detail. The present results indicated that both packages were suited for studying the gamma response function of EJ301 detector.The gamma response function is required for energy calibration of EJ301 （5 cm in diameter and 20 cm in height） organic liquid scintillator detector by means of gamma sources. The GEANT4 and FLUKA Monte Carlo simulation packages were used to simulate the response function of the detector for standard 22Na, 60Co, 137Cs gamma sources. The simulated results showed a good agreement with experimental data by incorporating the energy resolution function to simulation codes. The energy resolution and the position of the maximum Compton electron energy were obtained by comparing measured light output distribution with simulated one. The energy resolution of the detector varied from 21.2% to 12.4% for electrons in the energy region from 0.341 MeV to 1.12 MeV. The accurate position of the maximum Compton electron energy was determined at the position 81% of maximum height of Compton edges distribution. In addition, the relation of the electron energy calibration and the effective neutron detection thresholds were described in detail. The present results indicated that both packages were suited for studying the gamma response function of EJ301 detector.

关 键 词：gamma response function E J301 organic liquid scintillator energy calibration energy resolutionfunction GEANT4 FLUKA Compton edge 

分 类 号：TL812[核科学技术—核技术及应用]