Search of low-mass WIMPs with ap-type point contact germanium detector in the CDEX-1 experiment

• DOI: 10.1103/physrevd.93.092003
• Publication Date: 2016-05-06T18:08:21Z
• Authors: W. Zhao; Q. Yue; K. J. Kang; J. P. Cheng; Y. J. Li; H. T. Wong; S. T. Lin; J. P. Chang; J. H. Chen; Q. H. Chen; Y. H. Chen; Z. Deng; Q. Du; H. Gong; X. Q. Hao; H. J. He; Q. J. He; H. X. Huang; T. R. Huang; H. Jiang; H. B. Li; J. Li; J. Li; J. M. Li; X. Li; X. Y. Li; Y. L. Li; F. K. Lin; S. K. Liu; L. C. Lü; H. Ma; J. L. Ma; S. J. Mao; J. Q. Qin; J. Ren; J. Ren; X. C. Ruan; V. Sharma; M. B. Shen; L. Singh; M. K. Singh; A. K. Soma; J. Su; C. J. Tang; J. M. Wang; L. Wang; Q. Wang; S. Y. Wu; Y. C. Wu; Z. Z. Xianyu; R. Q. Xiao; H. Y. Xing; F. Z. Xu; Y. Xu; X. J. Xu; T. Xue; L. T. Yang; S. W. Yang; N. Yi; C. X. Yu; H. Yu; X. Z. Yu; M. Zeng; X. H. Zeng; Z. Zeng; L. Zhang; Y. H. Zhang; M. G. Zhao; Z. Y. Zhou; J. J. Zhu; W. B. Zhu; X. Z. Zhu; Z. H. Zhu
• Keywords: High Energy Physics - Experiment (hep-ex); Physics - Instrumentation and Detectors; 0103 physical sciences; FOS: Physical sciences; Instrumentation and Detectors (physics.ins-det); 01 natural sciences; High Energy Physics - Experiment

The CDEX-1 experiment conducted a search of low-mass (< 10 GeV/c2) Weakly Interacting Massive Particles (WIMPs) dark matter at the China Jinping Underground Laboratory using p-type point-contact germanium detector with fiducial mass 915 g physics analysis threshold 475 eVee. We report hardware set-up, characterization, data acquisition and procedures this experiment. No excess unidentified events are observed after subtraction known background. Using 335.6 kg-days data, exclusion constraints on WIMP-nucleon spin-independent spin-dependent couplings derived.