Introduction of the CDEX experiment
Abstract
Weakly Interacting Massive Particles (WIMPs) are the candidates of dark matter in our universe. Up to now any direct interaction of WIMP with nuclei has not been observed yet. The exclusion limits of the spin-independent cross section of WIMP-nucleon which have been experimentally obtained is about 10^{-7}pb at high mass region and only 10^{-5}pb} at low mass region. China Jin-Ping underground laboratory CJPL is the deepest underground lab in the world and provides a very promising environment for direct observation of dark matter. The China Dark Matter Experiment (CDEX) experiment is going to directly detect the WIMP flux with high sensitivity in the low mass region. Both CJPL and CDEX have achieved a remarkable progress in recent two years. The CDEX employs a point-contact germanium semi-conductor detector PCGe whose detection threshold is less than 300 eV. We report the measurement results of Muon flux, monitoring of radioactivity and Radon concentration carried out in CJPL, as well describe the structure and performance of the 1 kg PCGe detector CDEX-1 and 10kg detector array CDEX-10 including the detectors, electronics, shielding and cooling systems. Finally we discuss the physics goals of the CDEX-1, CDEX-10 and the future CDEX-1T detectors.
Cite
@article{arxiv.1303.0601,
title = {Introduction of the CDEX experiment},
author = {Ke-Jun Kang and Jian-Ping Cheng and Jin Li and Yuan-Jing Li and Qian Yue and Yang Bai and Yong Bi and Jian-Ping Chang and Nan Chen and Ning Chen and Qing-Hao Chen and Yun-Hua Chen and Zhi Deng and Qiang Du and Hui Gong and Xi-Qing Hao and Hong-Jian He and Qing-Ju He and Xin-Hui Hu and Han-Xiong Huang and Hao Jiang and Jian-Min Li and Xia Li and Xin-Ying Li and Xue-Qian Li and Yu-Lan Li and Shu-Kui Liu and Ya-Bin Liu and Lan-Chun Lu and Hao Ma and Jian-Qiang Qin and Jie Ren and Jing Ren and Xi-Chao Ruan and Man-Bin Shen and Jian Su and Chang-Jian Tang and Zhen-Yu Tang and Ji-Min Wang and Qing Wang and Xu-Feng Wang and Shi-Yong Wu and Yu-Cheng Wu and Zhong-Zhi Xianyu and Hao-Yang Xing and Xun-Jie Xu and Yin Xu and Tao Xue and Li-Tao Yang and Nan Yi and Hao Yu and Chun-Xu Yu and Xiong-Hui Zeng and Zhi Zeng and Lan Zhang and Guang-Hua Zhang and Ming-Gang Zhao and Su-Ning Zhong and Jin Zhou and Zu-Ying Zhou and Jing-Jun Zhu and Wei-Bin Zhu and Xue-Zhou Zhu and Zhong-Hua Zhu},
journal= {arXiv preprint arXiv:1303.0601},
year = {2014}
}
Comments
36pages,39 figures