Share Email Print
cover

Proceedings Paper

Construction of a two-dimensional thermal neutron detector
Author(s): Xiao-hu Wang; Yuan-bo Chen; Huan-yi Sheng; Yu-bin Zhao; Hong-yu Zhang; Qi-ming Zhu; Rong-guang Liu; Jian Zhang; Pin Xu
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

China Spallation Neutron Source (CSNS) was under construction since 2008. A two-dimensional thermal neutron detector with sensitive area of 200mm×200mm was constructed for the Reflect Spectrometer of CSNS. The detector was based on two-dimensional cathode strip readout MWPC, using 5.5atm3He+2.5atmC3H8 mixture as working gas, and the thickness of the gas volume was 16mm. A readout electronics system was also developed for the detector, which mainly consists of charge-sensitive preamplifiers, amplifiers, charge measurement modules and a 6U VME64x crate. The design maximum neutron count rate of the detector was 105 events per second and the calculated neutron detection efficiency was about 70% for A2 neutrons. A prototype of the detector had been constructed at first, which own an energy resolution (FWHM) of about 23% for 55Fe 5.9keV X-ray, and its spatial resolution (FWHM) along the anode wire direction was about 300μm in X-ray test. The detector was then tested by an Am-Be neutron source. The pulse height spectrum of the neutron signal was studied. The detector can work normally and has a good performance in neutron-gamma ray discrimination.

Paper Details

Date Published: 4 August 2009
PDF: 6 pages
Proc. SPIE 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications, 73851I (4 August 2009); doi: 10.1117/12.835070
Show Author Affiliations
Xiao-hu Wang, Institute of High Energy Physics (China)
Yuan-bo Chen, Institute of High Energy Physics (China)
Huan-yi Sheng, Institute of High Energy Physics (China)
Yu-bin Zhao, Institute of High Energy Physics (China)
Hong-yu Zhang, Institute of High Energy Physics (China)
Qi-ming Zhu, Institute of High Energy Physics (China)
Rong-guang Liu, Institute of High Energy Physics (China)
Jian Zhang, Institute of High Energy Physics (China)
Pin Xu, Zhengzhou Univ. (China)


Published in SPIE Proceedings Vol. 7385:
International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications
X.-C. Zhang; James M. Ryan; Cun-lin Zhang; Chuan-xiang Tang, Editor(s)

© SPIE. Terms of Use
Back to Top