MSE/SSE discrimination methods of the PC-HPGe detector

LI Yu-Lan; LI Jin; YUE Qian; LI Yuan-Jing

doi:10.1088/1674-1137/36/9/011

Chinese Physics C> 2012, Vol. 36> Issue(9) : 855-860 DOI: 10.1088/1674-1137/36/9/011

MSE/SSE discrimination methods of the PC-HPGe detector

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Abstract：
Having advantages of low capacitance and low energy threshold, the PC-HPGe (Point-Contact High Purity Germanium) detector has found its application in the direct detection of WIMP(Weak Interaction Massive Particle) in CDEX (China Darkmatter Experiment). The MSE (Multi-Site Event) and SSE(Single-Site Event) discrimination methods of the PC-HPGe detector are introduced in this article, including their physical basis, the electronics system and the algorithms to implement them. Behaviors of the PC-HPGe detector are studied intensively through this research and finally the experimental results of the LE discrimination method are presented.

References

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YUE Qian et al. HEP NP, 2004, 28(8): 877-880 (in Chinese)[2] LI Lei et al. Chinese Physics C (HEP NP), 2011, 35(3): 282-287[3] Agostini M et al. JINST, 2011, 6: P04005[4] Dusan Budjs et al. JINST, 2009, 4: P10007[5] Abt I et al. Euro. Phys. Jour. C, 2010, 68: 609-618[6] Schmid G J et al. Nucl. Instrum. Methods A, 1999, 422: 368-372[7] Philhour B et al. Nucl. Instrum. Methods A, 1998, 403: 136-150[8] Hellmig J et al. Nucl. Instrum. Methods A, 2000, 455: 638-644

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LI Yu-Lan, LI Jin, YUE Qian, LI Yuan-Jing and MSE/SSE discrimination methods of the PC-HPGe detector[J]. Chinese Physics C, 2012, 36(9): 855-860. doi: 10.1088/1674-1137/36/9/011

LI Yu-Lan, LI Jin, YUE Qian, LI Yuan-Jing and MSE/SSE discrimination methods of the PC-HPGe detector[J]. Chinese Physics C, 2012, 36(9): 855-860. doi: 10.1088/1674-1137/36/9/011 shu

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Received: 2011-12-21
Revised: 2012-02-09

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沈阳化工大学材料科学与工程学院沈阳 110142

MSE/SSE discrimination methods of the PC-HPGe detector

Corresponding author: LI Yu-Lan,

Received Date: 2011-12-21
Accepted Date: 2012-02-09
Available Online: 2012-09-05

Abstract: Having advantages of low capacitance and low energy threshold, the PC-HPGe (Point-Contact High Purity Germanium) detector has found its application in the direct detection of WIMP(Weak Interaction Massive Particle) in CDEX (China Darkmatter Experiment). The MSE (Multi-Site Event) and SSE(Single-Site Event) discrimination methods of the PC-HPGe detector are introduced in this article, including their physical basis, the electronics system and the algorithms to implement them. Behaviors of the PC-HPGe detector are studied intensively through this research and finally the experimental results of the LE discrimination method are presented.