Developments of a 2D position sensitiveneutron detector

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TIAN Li-Chao, TANG Bin, WANG Xiao-Hu, LIU Rong-Guang, ZHANG Jian, CHEN Yuan-Bo, SUN Zhi-Jia, XU Hong, YANG Gui-An and ZHANG Qiang. Developments of a 2D position sensitiveneutron detector[J]. Chinese Physics C, 2012, 36(6): 525-530. doi: 10.1088/1674-1137/36/6/008
TIAN Li-Chao, TANG Bin, WANG Xiao-Hu, LIU Rong-Guang, ZHANG Jian, CHEN Yuan-Bo, SUN Zhi-Jia, XU Hong, YANG Gui-An and ZHANG Qiang. Developments of a 2D position sensitiveneutron detector[J]. Chinese Physics C, 2012, 36(6): 525-530.  doi: 10.1088/1674-1137/36/6/008 shu
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Received: 2011-08-29
Revised: 2011-10-18
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Developments of a 2D position sensitiveneutron detector

    Corresponding author: TIAN Li-Chao,
    Corresponding author: SUN Zhi-Jia,

Abstract: China Spallation Neutron Source (CSNS), one project of the 12th Five-Year-Plan scheme of China, is under construction in Guangdong province. Three neutron spectrometers will be installed during the first phase of the project, and two-dimensional position sensitive thermal neutron detectors are required. Before the construction of the neutron detectors, a prototype of a two-dimensional 200 mm×200 mm Multi-wire Proportional Chamber (MWPC) with Ar/CO2 (90/10) flowing gas has been constructed. In 2009, the prototype was tested with the 55Fe X-ray using part of the electronics, and performed well.
Following the test in 2009, the neutron detector was constructed with the complete electronics and filled with the 6 atm. 3He+2.5 atm. C3H8 gas mixture in 2010. The neutron detector has been primarily tested with an Am-Be source. In this paper, new developments of the neutron detector including the design of the high pressure chamber, the optimization of the gas purifying system and the gas filling process will be reported. The results and discussion are also presented in this paper.

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