Portal de Periódicos da CAPES

Introduction to the CDEX experiment

2013; Higher Education Press; Volume: 8; Issue: 4 Linguagem: Inglês

10.1007/s11467-013-0349-1

2095-0470

Kejun Kang, Jianping Cheng, Jin Li, Yuanjing Li, Qian Yue, Y. Bai, Yong Bi, J. P. Chang, Nan Chen, Ning Chen, Qinghao Chen, Yunhua Chen, Yo-Chun Chuang, Zhi Deng, Qiang Du, Hui Gong, Xi-Qing Hao, Hong-Jian He, Qing-Ju He, Xin-Hui Hu, Han‐Xiong Huang, Teng-Rui Huang, H. J. Jiang, Hau-Bin Li, Jianmin Li, Jun Li, Li Xia, Xinying Li, Xue–Qian Li, Yulan Li, Heng-Ye Liao, F. K. Lin, Shin-Ted Lin, Shukui Liu, Ya-Bin Liu, Lan-Chun Lü, Hao Ma, Shao-Ji Mao, Jian‐Qiang Qin, Jie Ren, Jing Ren, Xichao Ruan, Manbin Shen, Manbin Shen, Lakhwinder Simgh, M. K. Singh, A. K. Soma, Jian Su, Changjian Tang, C. H. Tseng, Jimin Wang, Li Wang, Qing Wang, Tsz-King Henry Wong, Xufeng Wang, Shiyong Wu, Wei Wu, Yucheng Wu, Zhong-Zhi Xianyu, Haoyang Xing, Xun-Jie Xu, Yin Xu, Tao Xue, L. T. Yang, S. W. Yang, Yi Nan, Chunxu Yu, Hao Yu, Xun-Zhen Yu, X. H. Zeng, Zhi Zeng, Lan Zhang, Yunhua Zhang, M. G. Zhao, Wei Zhao, Su-Ning Zhong, Jin Zhou, Zuying Zhou, Jingjun Zhu, Wei-Bin Zhu, Xue-Zhou Zhu, Zhong-Hua Zhu,

Particle Detector Development and Performance

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.