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The CDEX-1 1 kg Point-Contact Germanium Detector for Low Mass Dark Matter Searches | | Ke-Jun Kang
; Qian Yue
; Yu-Cheng Wu
; Jian-Ping Cheng
; Yuan-Jing Li
; Yang Bai
; Yong Bi
; Jian-Ping Chang
; Nan Chen
; Ning Chen
; Qing-Hao Chen
; Yun-Hua Chen
; You-Chun Chuang
; Zhi Dend
; Qiang Du
; Hui Gong
; Xi-Qing Hao
; Qing-Ju He
; Xin-Hui Hu
; Han-Xiong Huang
; Teng-Rui Huang
; Hao Jiang
; Hau-Bin Li
; Jian-Min Li
; Jin Li
; Jun Li
; Xia Li
; Xin-Ying Li
; Xue-Qian Li
; Yu-Lan Li
; Heng-Ye Liao
; Fong-Kay Lin
; Shin-Ted Lin
; Shu-Kui Liu
; Lan-Chun Lv
; Hao Ma
; Shao-Ji Mao
; Jian-Qiang Qin
; Jie Ren
; Jing Ren
; Xi-Chao Ruan
; Man-Bin Shen
; Lakhwinder Singh
; Manoj Kumar Singh
; Arun Kumar Soma
; Jian Su
; Chang-Jian Tang
; Chao-Hsiung Tseng
; Ji-Min Wang
; Li Wang
; Qing Wang
; Tsz-King Henry Wong
; Shi-Yong Wu
; Wei Wu
; Yu-Cheng Wu
; Hao-Yang Xing
; Yin Xu
; Tao Xue
; Li-Tao Yang
; Song-Wei Yang
; Nan Yi
; Chun-Xu Yu
; Hao Yu
; Xun-Zhen Yu
; Xiong-Hui Zeng
; Zhi Zeng
; Lan Zhang
; Yun-Hua Zhang
; Ming-Gang Zhao
; Wei Zhao
; Su-Ning Zhong
; Zu-Ying Zhou
; Jing-Jun Zhu
; Wei-Bin Zhu
; Xue-Zhou Zhu
; Zhong-Hua Zhu
; | | Date: |
2 May 2013 | | Abstract: | The CDEX Collaboration has been established for direct detection of light
dark matter particles, using ultra-low energy threshold p-type point-contact
germanium detectors, in China JinPing underground Laboratory (CJPL). The first
1 kg point-contact germanium detector with a sub-keV energy threshold has been
tested in a passive shielding system located in CJPL. The outputs from both the
point-contact p+ electrode and the outside n+ electrode make it possible to
scan the lower energy range of less than 1 keV and at the same time to detect
the higher energy range up to 3 MeV. The outputs from both p+ and n+ electrode
may also provide a more powerful method for signal discrimination for dark
matter experiment. Some key parameters, including energy resolution, dead time,
decay times of internal X-rays, and system stability, have been tested and
measured. The results show that the 1 kg point-contact germanium detector,
together with its shielding system and electronics, can run smoothly with good
performances. This detector system will be deployed for dark matter search
experiments. | | Source: | arXiv, 1305.0401 | | Services: | Forum | Review | PDF | Favorites | |
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