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您的检索式：作者名="Arun Kumar SOMA"
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| 1 | CDEX-1 1 kg point-contact germanium detector for low mass dark matter searches显示文摘The CDEX collaboration has been established for direct detection of light dark matter particles, using ultra-low energy threshold point-contact p-type 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. | 康克军 岳赛 吴呈城 程建平 李元景 白杨 毕勇 常建平 陈楠 陈宁 陈庆豪 陈云华 庄又澄 邓智 杜强 宫辉 郝喜庆 何庆驹 胡鑫洄 黄瀚雄 黄腾锐 江灏 李浩斌 李荐民 李金 李军 李霞 李新颖 李学潜 李玉兰 廖恒毅 林枫凯 林欣德 刘书魁 吕岚春 马豪 毛绍基 覃建强 任杰 任婧 阮锡超 申满斌 Lakhwinder SINGH Manoj Kumar SINGH Arun Kumar SOMA 苏健 唐昌建 曾昭雄 王继敏 王力 王青 王子敬 吴世勇 吴蔚 吴玉成 幸浩洋 徐音 薛涛 杨丽桃 杨松纬 易难 喻纯旭 于昊 余训臻 曾雄辉 曾志 张岚 张蕴华 赵明刚 赵伟 钟苏宁 周祖英 朱敬军 朱维彬 朱学洲 朱忠华 | 2013 | Chinese Physics C2013，37，12： | 3 |
| 2 | First results on ^(76)Ge neutrinoless double beta decay from CDEX-1 experiment显示文摘We report the first results on ^(76)Ge neutrinoless double beta decay from stage one of the China dark-matter experiment(CDEX).A p-type point-contact high-purity germanium detector with a mass of 994 g has been installed to detect neutrinoless double beta decay events, as well as to directly detect dark matter particles. An exposure of 304 kg d has been analyzed over a wide spectral band from 500 keV to 3 MeV. The average event rate obtained was about 0.012 counts per keV per kg per day over the 2.039 MeV energy range. The half-life of ^(76)Ge neutrinoless double beta decay derived based on this result is T^(0ν)1/2>6.4×10^(22) yr(90% C.L.). An upper limit on the effective Majorana-neutrino mass of 5.0 eV has been achieved. | Li Wang Qian Yue KeJun Kang JianPing Cheng YuanJing Li TszKing Henry Wong ShinTed Lin JianPing Chang JingHan Chen QingHao Chen YunHua Chen Zhi Deng Qiang Du Hui Gong Li He QingJu He JinWei Hu HanXiong Huang TengRui Huang LiPing Jia Hao Jiang HauBin Li Hong Li JianMin Li Jin Li Jun Li Xia Li XueQian Li YuLan Li FongKay Lin ShuKui Liu Hao Ma JingLu Ma XingYu Pan Jie Ren XiChao Ruan ManBin Shen Vivek Sharma Lakhwinder Singh Manoj Kumar Singh Manoj Kumar Singh Arun Kumar Soma ChangJian Tang WeiYou Tang ChaoHsiung Tseng JiMin Wang Qing Wang ShiYong Wu YuCheng Wu HaoYang Xing Yin Xu Tao Xue LiTao Yang SongWei Yang Nan Yi ChunXu Yu HaiJun Yu WeiHe Zeng XiongHui Zeng Zhi Zeng Lan Zhang YunHua Zhang MingGang Zhao Wei Zhao JiFang Zhou ZuYing Zhou JingJun Zhu WeiBin Zhu ZhongHua Zhu | 2017 | Science China(Physics,Mechanics & Astronomy)2017，60，7： | 3 |
| 3 | Study of the material photon and electron background and the liquid argon detector veto efficiency of the CDEX-10 experiment显示文摘The China Dark Matter Experiment(CDEX) is located at the China Jinping Underground Laboratory(CJPL) and aims to directly detect the weakly interacting massive particles(WIMP) flux with high sensitivity in the low mass region. Here we present a study of the predicted photon and electron backgrounds including the background contribution of the structure materials of the germanium detector, the passive shielding materials, and the intrinsic radioactivity of the liquid argon that serves as an anti-Compton active shielding detector. A detailed geometry is modeled and the background contribution has been simulated based on the measured radioactivities of all possible components within the GEANT4 program. Then the photon and electron background level in the energy region of interest(<10^(-2)events·kg^1·day^(-1)·ke V^(-1)(cpkkd)) is predicted based on Monte Carlo simulations. The simulated result is consistent with the design goal of the CDEX-10 experiment, 0.1cpkkd, which shows that the active and passive shield design of CDEX-10 is effective and feasible. | 苏健 曾志 马豪 岳骞 程建平 常建平 陈楠 陈宁 陈庆豪 陈云华 庄又澄 邓智 杜强 宫辉 郝喜庆 何庆驹 黄瀚雄 黄腾锐 江灏 康克军 李浩斌 李荐民 李金 李军 李霞 李新颖 李学潜 李玉兰 李元景 廖恒毅 林枫凯 林欣德 刘书魁 吕岚春 毛绍基 覃建强 任杰 任婧 阮锡超 申满斌 SINGH Lakhwinder SINGH Manoj Kumar SOMA Arun Kumar 唐昌建 曾昭雄 王继敏 王力 王青 王子敬 吴世勇 吴玉成 幸浩洋 徐音 薛涛 杨丽桃 杨松纬 易难 喻纯旭 于昊 余训臻 曾雄辉 张岚 张蕴华 赵明刚 赵伟 周祖英 朱敬军 朱维彬 朱雪洲 朱忠华 | 2015 | Chinese Physics C2015，39，3： | 0 |
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