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Introduction of the CDEX experiment

Authors :
Tao Xue
Hao-Yang Xing
Chunxu Yu
Yong Bi
Yunhua Chen
Qing Wang
J. Q. Qin
Qian Yue
Q. Du
Yun-Hua Zhang
Shiyong Wu
Xi-Qing Hao
Jun Li
Hao Jiang
Xichao Ruan
Y. C. Chuang
Ning Chen
Nan Chen
Su-Ning Zhong
Ji-Min Wang
Jin Zhou
Jie Ren
Zhong-Hua Zhu
Yulan Li
L. T. Yang
Yin Xu
Wei Zhao
Xun-Jie Xu
Xue-Qian Li
Manoj Kumar Singh
Man-Bin Shen
Li Wang
F. K. Lin
J. P. Chang
Xin-Ying Li
Lan Zhang
Z. Y. Zhou
S. T. Lin
Hau-Bin Li
Qing-Hao Chen
Hao Ma
N. Yi
Teng-Rui Huang
Jianmin Li
Chang-Jian Tang
Jing Ren
Yuanjing Li
Jian Su
Wei-Bin Zhu
X. H. Zeng
Yucheng Wu
Qing-Ju He
Y. Y. Liu
Arun Kumar Soma
Yang Bai
X. Z. Yu
Zhi Deng
Xin-Hui Hu
Z. Z. Xianyu
Xia Li
S. K. Liu
Hong-Jian He
Chao-Hsiung Tseng
Kejun Kang
Ming-Gang Zhao
Hao Yu
Song-Wei Yang
H. Y. Liao
Jianping Cheng
Jin Li
X. Z. Zhu
Tsz-King Henry Wong
Wei Wu
Lakhwinder Simgh
Zhi Zeng
Xu-Feng Wang
L. C. Lü
Hanxiong Huang
J.J. Zhu
S. J. Mao
Hui Gong
Publication Year :
2013

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.<br />36pages,39 figures

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....ff7f08261fcc1387e0d63d21bcdef107