Online measurement of the intensity of keV positron beam
作者: Z.Y. ZhangY. WuS. LiangZ.X. KeX.G. XiaB.Y. WangP. Zhang
作者单位: 1Beijing Key Laboratory of Passive Safety Technology for Nuclear Energy, School of Nuclear Science and Engineering, North China Electric Power University, Beijing, China
2Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
刊名: Radiation Physics and Chemistry, 2020, Vol.171
来源数据库: Elsevier Journal
DOI: 10.1016/j.radphyschem.2020.108698
关键词: Slow positron beamOnline measurementBeam intensityMonte Carlo simulation
英文摘要: Abstract(#br)The intensity of keV positron beam generated by 22 Na slow positron beam device is weak (generally less than 10 6 e + /s). Therefore, the traditional method of obtaining beam intensity by Faraday cup is no longer applicable. Currently published methods of obtaining beam intensity are relatively deficient and insufficient. In this paper, a new method was developed to obtain the real-time intensity of positron beam, that is, the HPGe detector was used to collect the 511-keV photons emitted from the thick target bombarded by the positrons, combining with the experimental calibration value of HPGe detector for 511-keV photons as a 22 Na standard point source placed at the collision point of thick carbon target, and with the relevant parameters got by Monte Carlo simulation....
全文获取路径: Elsevier  (合作)
影响因子:1.375 (2012)

  • positron 阳电子
  • intensity 强度
  • measurement 测量