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 ›› 2013, Vol. 24 ›› Issue (6): 060407 doi: 10.13538/j.1001-8042/nst.2013.06.011


Optimal choice of trapezoidal shaping parameters in digital nuclear spectrometer system

ZHANG Huaiqiang 1,2,* GE Liangquan 3 TANG Bin 1 LIU Tingli 2   

  1. 1Engineering Research Center of Nuclear Technology Application (East China Institute of Technology), Ministry of Education,
    Nanchang 330013, China
    2School of Nuclear Engineering and Geophysics, East China Institute of Technology, Nanchang 330013, China
    3School of Information Science and Technology, Chengdu University of Technology, Chengdu 610059, China
  • Contact: ZHANG Huaiqiang
  • Supported by:

    Supported by National High Technology Research and Development Program of China (Nos.2012AA061804 and 2012AA061803), East China Institute of Technology Science Foundation (No.DHBK201111) and Open-ended Foundation (No.HJSJYB2011-18) from the Chinese Engineering Research Center

ZHANG Huaiqiang, GE Liangquan, TANG Bin, LIU Tingli. Optimal choice of trapezoidal shaping parameters in digital nuclear spectrometer system.Nuclear Science and Techniques, 2013, 24(6): 060407     doi: 10.13538/j.1001-8042/nst.2013.06.011


Trapezoidal shaping method is widely applied to pulse amplitude extraction in digital nuclear spectrometer system, the optimal selection of the shaping parameters can improve the energy resolution and pulse counting rate. From the view of noise characteristics, ballistic deficit compensation characteristics and pulse pile-up characteristics, in this paper the optimal selection of the trapezoidal shaping parameters is studied on. According to the theoretical analysis and experimental verification, the optimal choice of trapezoidal shaping parameters is similar to the triangle, the rise time is longer and the flat-top width is shorter.

Key words: Trapezoidal shaping parameter, Energy resolution, Ballistic deficit, Pulse counting rate, Digital nuclear spectrometer