A geometric factor calculation method based on the isotropic flux assumption

Get Citation
ZHAO Xiao-Yun, WANG Huan-Yu, WU Feng, MENG Xiang-Cheng, MA Yu-Qian, LU Hong, WANG Hui, WANG Ping, LI Xin-Qiao, XU Yan-Bin, SHI Feng, JIANG Wen-Qi, AN Zhen-Hua, YU Xiao-Xia and LIU Han-Yi. A geometric factor calculation method based on the isotropic flux assumption[J]. Chinese Physics C, 2013, 37(12): 126201. doi: 10.1088/1674-1137/37/12/126201
ZHAO Xiao-Yun, WANG Huan-Yu, WU Feng, MENG Xiang-Cheng, MA Yu-Qian, LU Hong, WANG Hui, WANG Ping, LI Xin-Qiao, XU Yan-Bin, SHI Feng, JIANG Wen-Qi, AN Zhen-Hua, YU Xiao-Xia and LIU Han-Yi. A geometric factor calculation method based on the isotropic flux assumption[J]. Chinese Physics C, 2013, 37(12): 126201.  doi: 10.1088/1674-1137/37/12/126201 shu
Milestone
Received: 2013-02-19
Revised: 2013-04-02
Article Metric

Article Views(1815)
PDF Downloads(290)
Cited by(0)
Policy on re-use
To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

A geometric factor calculation method based on the isotropic flux assumption

    Corresponding author: ZHAO Xiao-Yun,
    Corresponding author: WANG Huan-Yu,

Abstract: One of the instruments onboard the China Seismic Electromagnetic Satellite (CSES) is the Low Energy Particle Detector (LEPD). The primary objective of LEPD is to provide measurements of the fluxes, energy spectra and pitch angles of 100 keV to 10 MeV electrons and protons from 2 to 50 MeV in the Earth's magnetosphere. The geometric factor is one of the principle parameters of a detector, which converts the physical quantity-count rate to the particle quantity-flux. In this paper, we calculated the geometric factor of LEPD via computer modeling of an isotropic radiation environment. It was first demonstrated that the radiation intensity related should obey a cosine-law, then a general sampling method of generating this distribution via GPS of GEANT4 was explained. Furthermore, combined with flux normalization, a comparison of the geometric factor calculation of a set of 2-layer detectors with different shapes (cylinder, truncated cone and rectangle) was performed. Results show a generally good agreement between simulation and analytical calculations for the cylinder and truncated cone detectors, and the result of the rectangular one, for which there is no accurate analytical formula, is consistent with the previous simulated results by others. As a practical instance of the 2-layer rectangle detector, the geometric factor of LEPD is 10.336±0.036 m cm2·sr for 10 MeV proton and 8.211±0.032 m cm2·sr for 8 MeV electron.

    HTML

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return