Nuclear Techniques ›› 2014, Vol. 37 ›› Issue (11): 110401-110401.doi: 10.11889/j.0253-3219.2014.hjs.37.110401

• NUCLEAR ELECTRONICS AND INSTRUMENTATION • Previous Articles     Next Articles

Design of the electronics system of neutron dosimeter of a single sphere with multi-counters

HONG Bing1 LI Taosheng1,2 ZHANG Zhiyong3 YAN Qiang1 WANG Chenglong1 DONG Liang1 SU Zhe1   

  1. 1(Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin 150001, China) 2(Institute of Nuclear Energy Safety Technology, Chinese Academy of Sciences, Hefei 230000, China) 3(Beijing RadiTec Co., Beijing 100093, China)
  • Received:2014-02-21 Revised:2014-05-13 Online:2014-11-10 Published:2014-11-07
  • Contact: Tao-Sheng LI E-mail:taoshengli4465@sina.com

Abstract: Background: A single sphere moderator and high sensitivity multi-counter (SMMC) is designed for portable neutron dosimeter. Purpose: In order to use the SMMC for practical application, the design of the electronics system is required to satisfy the requirement of the signal processing of SMMC. Methods: The system was mainly composed of the amplifier circuits, nuclear pulse shaped circuit, pulse amplitude discriminate circuits, instrument control circuit and power management circuit. Each of these components was designed and implemented for experimental evaluation. Results: Experimental results show that this electronic system could work stably and satisfy the design requirements. Conclusion: The electronics system could satisfy the function requirements of the new neutron dosimeter. The main functions of signal acquisition and amplifying, pulse discrimination, counting, instrument control, etc. were realized by the system.

Key words: Neutron detector, Amplification circuit, Complex Programmable Logic Device (CPLD), MSP430 microcontroller