Demonstration of surface electron rejection with interleaved germanium detectors for dark matter searches
Demonstration of surface electron rejection with interleaved germanium detectors for dark matter searches
复制标题
使用交错式锗探测器进行暗物质搜索的表面电子排斥演示
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
J. Zhang
中科院分区：
文献类型：
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作者：
R. Agnese;A. Anderson;D. Balakishiyeva;R. Thakur;D. Bauer;A. Borgland;D. Brandt;P. Brink;R. Bunker;B. Cabrera;D. Caldwell;D. Cerdeño;H. Chagani;M. Cherry;J. Cooley;B. Cornell;C. Crewdson;P. Cushman;M. Daal;P. D. Stefano;E. Silva;T. Doughty;L. Esteban;S. Fallows;E. Figueroa;J. Fox;M. Fritts;G. Godfrey;S. Golwala;J. Hall;H. R. Harris;J. Hasi;S. Hertel;B. Hines;T. Hofer;D. Holmgren;L. Hsu;M. Huber;A. Jastram;O. Kamaev;B. Kara;M. Kelsey;S. Kenany;A. Kennedy;C. Kenney;M. Kiveni;K. Koch;B. Loer;E. Asamar;R. Mahapatra;V. Mandic;C. Martinez;K. McCarthy;N. Mirabolfathi;R. Moffatt;D. Moore;P. Nadeau;R. Nelson;L. Novak;K. Page;R. Partridge;M. Pepin;A. Phipps;K. Prasad;M. Pyle;H. Qiu;R. Radpour;W. Rau;P. Redl;A. Reisetter;R. Resch;Y. Ricci;T. Saab;B. Sadoulet;J. Sander;R. Schmitt;K. Schneck;R. Schnee;S. Scorza;D. Seitz;B. Serfass;B. Shank;D. Speller;A. Tomada;A. Villano;B. Welliver;D. Wright;S. Yellin;J. Yen;Betty A. Young;J. Zhang
苏丹地下实验室的SuperCDMS实验用9公斤重的低温锗探测器阵列寻找暗物质。对称的传感器在相对的两侧测量每个粒子相互作用的电荷和声子，提供电子和核反冲之间，以及表面和内部事件之间的出色区分。用两个产生130倍β衰变/小时的^（210）Pb源测试了表面事件抑制能力。在1800个实时小时内，没有事件泄漏到8-115 keV信号区，在90% C. L.时，泄漏分数上限为1.7 × 10^（−5），对应未来200千克SuperCDMS SNOLAB实验中< 0.6的表面事件背景。
The SuperCDMS experiment in the Soudan Underground Laboratory searches for dark matter with a 9-kg array of cryogenic germanium detectors. Symmetric sensors on opposite sides measure both charge and phonons from each particle interaction, providing excellent discrimination between electron and nuclear recoils, and between surface and interior events. Surface event rejection capabilities were tested with two ^(210)Pb sources producing ∼130 beta decays/hr. In ∼800 live hours, no events leaked into the 8–115 keV signal region, giving upper limit leakage fraction 1.7 × 10^(−5) at 90% C.L., corresponding to < 0.6 surface event background in the future 200-kg SuperCDMS SNOLAB experiment.
影响因子：
8.7
作者：
Komatsu, E.;Smith, K. M.;Wright, E. L.
通讯作者：
Wright, E. L.