Performance study of the PTFE-THGEM at room and low temperature

XIE Wen-Qing; LI Yu-Lan; LI Yuan-Jing; YUE Qian

doi:10.1088/1674-1137/37/11/116001

Chinese Physics C> 2013, Vol. 37> Issue(11) : 116001 DOI: 10.1088/1674-1137/37/11/116001

Performance study of the PTFE-THGEM at room and low temperature

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Abstract：
GPM based on THGEM has shown its competitive strength compared to the conventional PMT,especially in the low background research such as dark matter detection. A kind of THGEM made from PTFE,named PTFE-THGEM,is developed for the GPM to be used in CDEX. The PTFE has a lot of advantages especially its low level radioactivity. The PTFE-THGEM was tested at room and cryogenic temperature. It has a high gain in different gases and shows good stability at room temperature. The gain of a single PTFE-THGEM reached 112 at 117 K. The penning effect is also discussed in this paper to explain the “abnormal” phenomena of the gain in different gases.

References

[1]

XIE Wen-Qing,LI Yu-Lan et al. Study of VUV Detector Based on Thinner THGEM for CDEX. In: IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC). America,2012.N14-124[2] Chechik R,Breskin A et al. Nucl. Instrum. Methods A,2004,535(1-2): 303[3] Shalem C,Chechik R et al. Nucl. Instrum. Methods A,2006,558(2): 475[4] Breskin A,Alon R et al. Nucl. Instrum. Methods A,2009,598(1): 107[5] LIU H B,ZHENG Y H et al. Nucl. Instrum. Methods A,2011,659(1): 237[6] Penning F M. Z. Phys.,1928,46(2): 335[7] Penning F M. Physica,1934,1(1): 1028[8] Norlen G. Physica Scripta,1973,8(T1): 249[9] Biagi S F. Nucl. Instrum. Methods A,1999,421(1-2): 234[10] Sahin O,Tapan I,Ozmutlu E N,Veenhof R. JINST,2010,5,P05002

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XIE Wen-Qing, LI Yu-Lan, LI Yuan-Jing and YUE Qian. Performance study of the PTFE-THGEM at room and low temperature[J]. Chinese Physics C, 2013, 37(11): 116001. doi: 10.1088/1674-1137/37/11/116001

XIE Wen-Qing, LI Yu-Lan, LI Yuan-Jing and YUE Qian. Performance study of the PTFE-THGEM at room and low temperature[J]. Chinese Physics C, 2013, 37(11): 116001. doi: 10.1088/1674-1137/37/11/116001 shu

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Received: 2013-01-30
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Performance study of the PTFE-THGEM at room and low temperature

Corresponding author: XIE Wen-Qing,

Received Date: 2013-01-30
Accepted Date: 1900-01-01
Available Online: 2013-11-05

Abstract: GPM based on THGEM has shown its competitive strength compared to the conventional PMT,especially in the low background research such as dark matter detection. A kind of THGEM made from PTFE,named PTFE-THGEM,is developed for the GPM to be used in CDEX. The PTFE has a lot of advantages especially its low level radioactivity. The PTFE-THGEM was tested at room and cryogenic temperature. It has a high gain in different gases and shows good stability at room temperature. The gain of a single PTFE-THGEM reached 112 at 117 K. The penning effect is also discussed in this paper to explain the “abnormal” phenomena of the gain in different gases.