Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2015, Vol. 26 ›› Issue (6): 060403 doi: 10.13538/j.1001-8042/nst.26.060403

• NUCLEAR ELECTRONICS AND INSTRUMENTATION • Previous Articles     Next Articles

Development of a spherical tissue equivalent proportional counter for neutron monitoring

JIANG Zhi-Gang,YUAN Yong-Gang, WANG He-Yi,CHEN Hua   

  1. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China
  • Contact: YUAN Yong-Gang E-mail: yyg 2000@yeah.net
  • Supported by:

    Supported by the Key Technology of Fusion Reactor Radiation Protection Foundation (No. 2014GB112005)

JIANG Zhi-Gang, YUAN Yong-Gang, WANG He-Yi, CHEN Hua. Development of a spherical tissue equivalent proportional counter for neutron monitoring.Nuclear Science and Techniques, 2015, 26(6): 060403     doi: 10.13538/j.1001-8042/nst.26.060403

Abstract:

A spherical tissue equivalent proportional counter (TEPC) for neutron monitoring has been developed. It was properly designed to produce a uniform electric field intensity around the anode wire. An internal 241Am alpha source was adopted for lineal energy calibration. The TEPC was characterized in terms of dose equivalent response in a standard 252Cf neutron field, and was tested with 2.45 MeV neutrons. Microdosimetric spectra, frequency mean lineal energy and dose-average mean lineal energy of 2.45 MeV neutrons were obtained and compared with FLUKA Monte Carlo simulation results. The measurement and simulation results agreed well. The mean quality factor and dose equivalent values evaluated from the 2.45MeV neutron measurement were in good agreement with the recommended effective quality factor and ambient dose equivalent H*(10), respectively. Preliminary results have proved the availability of the developed TEPC for neutron monitoring.

Key words: Neutron monitoring, Tissue-equivalent proportional counters, Dose equivalent response, FLUKA simulation, Microdosimetric spectra, Mean quality factor