Simulation and performance study of ceramic THGEM

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YAN Jia-Qing, XIE Yu-Guang, HU Tao, LU Jun-Guang, ZHOU Li, QU Guo-Pu, CAI Xiao, NIU Shun-Li and CHEN Hai-Tao. Simulation and performance study of ceramic THGEM[J]. Chinese Physics C, 2015, 39(6): 066001. doi: 10.1088/1674-1137/39/6/066001
YAN Jia-Qing, XIE Yu-Guang, HU Tao, LU Jun-Guang, ZHOU Li, QU Guo-Pu, CAI Xiao, NIU Shun-Li and CHEN Hai-Tao. Simulation and performance study of ceramic THGEM[J]. Chinese Physics C, 2015, 39(6): 066001.  doi: 10.1088/1674-1137/39/6/066001 shu
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Received: 2014-08-11
Revised: 2014-11-28
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Simulation and performance study of ceramic THGEM

    Corresponding author: YAN Jia-Qing,
    Corresponding author: XIE Yu-Guang,

Abstract: THGEMs based on a ceramic substrate have been successfully developed for neutron and single photon detection. The influences on thermal neutron scattering and internal radioactivity of both ceramic and FR-4 substrates were studied and compared. The ceramic THGEMs are homemade, of 200 μm hole diameter, 600 μm pitch, 200 μm thickness, 80 μm rim, and 50 mm×50 mm sensitive area. FR-4 THGEMs with the same geometry were used as a reference. The gas gain, energy resolution and gain stability were measured in different gas mixtures using 5.9 keV X-rays. The maximum gain of a single layer ceramic THGEM reaches 6×104 and 1.5×104 at Ne+CH4=95:5 and Ar+i-C4H10=97:3, respectively. The energy resolution is better than 24%. Good gain stability was obtained during a more than 100 hour continuous test in Ar+CO2=80:20. By using a 239Pu source, the alpha deposited energy spectrum and gain curve of the ceramic THGEM were measured.

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