The CDEX-1 1 kg Point-Contact Germanium Detector for Low Mass Dark Matter Searches
| Autor: | Kang, Ke-Jun, Yue, Qian, Wu, Yu-Cheng, Cheng, Jian-Ping, Li, Yuan-Jing, Bai, Yang, Bi, Yong, Chang, Jian-Ping, Chen, Nan, Chen, Ning, Chen, Qing-Hao, Chen, Yun-Hua, Chuang, You-Chun, Dend, Zhi, Du, Qiang, Gong, Hui, Hao, Xi-Qing, He, Qing-Ju, Hu, Xin-Hui, Huang, Han-Xiong, Huang, Teng-Rui, Jiang, Hao, Li, Hau-Bin, Li, Jian-Min, Li, Jin, Li, Jun, Li, Xia, Li, Xin-Ying, Li, Xue-Qian, Li, Yu-Lan, Liao, Heng-Ye, Lin, Fong-Kay, Lin, Shin-Ted, Liu, Shu-Kui, Lv, Lan-Chun, Ma, Hao, Mao, Shao-Ji, Qin, Jian-Qiang, Ren, Jie, Ren, Jing, Ruan, Xi-Chao, Shen, Man-Bin, Singh, Lakhwinder, Singh, Manoj Kumar, Soma, Arun Kumar, Su, Jian, Tang, Chang-Jian, Tseng, Chao-Hsiung, Wang, Ji-Min, Wang, Li, Wang, Qing, Wong, Tsz-King Henry, Wu, Shi-Yong, Wu, Wei, Xing, Hao-Yang, Xu, Yin, Xue, Tao, Yang, Li-Tao, Yang, Song-Wei, Yi, Nan, Yu, Chun-Xu, Yu, Hao, Yu, Xun-Zhen, Zeng, Xiong-Hui, Zeng, Zhi, Zhang, Lan, Zhang, Yun-Hua, Zhao, Ming-Gang, Zhao, Wei, Zhong, Su-Ning, Zhou, Zu-Ying, Zhu, Jing-Jun, Zhu, Wei-Bin, Zhu, Xue-Zhou, Zhu, Zhong-Hua |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Chinese Physics C, 2013, 37(12): 126002 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1674-1137/37/12/126002 |
| Popis: | 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. Comment: 6 pages, 8 figures |
| Databáze: | arXiv |
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