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arXiv 1302.4277physics.ins-detnucl-ex
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HEROICA:一种用于锗探测器快速筛选的地下设施

HEROICA: an Underground Facility for the Fast Screening of Germanium Detectors

E. Andreotti, A. Garfagnini, W. Maneschg, N. Barros, G. Benato, R. Brugnera, F. Costa, R. Falkenstein, K. K. Guthikonda, A. Hegai, S. Hemmer, M. Hult, K. Jaenne… 展开作者

E. Andreotti, A. Garfagnini, W. Maneschg, N. Barros, G. Benato, R. Brugnera, F. Costa, R. Falkenstein, K. K. Guthikonda, A. Hegai, S. Hemmer, M. Hult, K. Jaenner, T. Kihm, B. Lehnert, H. Liao, A. Lubashevskiy, G. Lutter, G. Marissens, L. Modenese, L. Pandola, M. Reissfelder, C. Sada, M. Salathe, C. Schmitt, O. Schulz, B. Schwingenheuer, M. Turcato, C. Ur, K. von Sturm, V. Wagner, J. Westermann

摘要:

位于比利时摩尔的HADES地下研究实验室设计并建造了一个表征锗探测器的基础设施。由于223米的粘土和沙子覆盖层,μ子通量降低了四个数量级。这种天然屏蔽使放射性纯锗材料暴露于宇宙辐射的程度最小化,从而显著抑制锗探测器中的宇宙源激活。该项目的主要动力是为GERDA实验专门生产锗探测器。GERDA目前正在INFN的Gran Sasso国家实验室收集数据,正在寻找76 Ge的无中微子双β衰变。在不久的将来,GERDA将通过增加新的宽能锗(BEGe)探测器来增加其质量和灵敏度。BEGe探测器的生产是在距离地下试验场约30公里的Olen(比利时)的堪培拉完成的。因此,HADES既可用于二极管生产过程中晶体的过夜储存,也可用于表征测量。2012年初,制造商交付了首批七台原型探测器,并在其上建立和测试了完整的质量控制链。筛选能力表明,安装的设置实现了对二极管的快速和完整的测量,它可以被看作是一个通用的测试设施,用于快速筛选高纯锗探测器。这些结果对于未来锗二极管的大规模生产和表征链具有重要意义,预计下一代76 Ge的1吨双β衰变实验可能会用到锗二极管。

英文摘要:

An infrastructure to characterize germanium detectors has been designed and constructed at the HADES Underground Research Laboratory, located in Mol (Belgium). Thanks to the 223m overburden of clay and sand, the muon flux is lowered by four orders of magnitude. This natural shield minimizes the exposure of radio-pure germanium material to cosmic radiation resulting in a significant suppression of cosmogenic activation in the germanium detectors. The project has been strongly motivated by a special production of germanium detectors for the GERDA experiment. GERDA, currently collecting data at the Laboratori Nazionali del Gran Sasso of INFN, is searching for the neutrinoless double beta decay of 76Ge. In the near future, GERDA will increase its mass and sensitivity by adding new Broad Energy Germanium (BEGe) detectors. The production of the BEGe detectors is done at Canberra in Olen (Belgium), located about 30km from the underground test site. Therefore, HADES is used both for storage of the crystals over night, during diode production, and for the characterization measurements. A full quality control chain has been setup and tested on the first seven prototype detectors delivered by the manufacturer at the beginning of 2012. The screening capabilities demonstrate that the installed setup fulfills a fast and complete set of measurements on the diodes and it can be seen as a general test facility for the fast screening of high purity germanium detectors. The results are of major importance for a future massive production and characterization chain of germanium diodes foreseen for a possible next generation 1-tonne double beta decay experiment with 76Ge.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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