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arXiv 0704.3016nucl-ex
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分段式高纯锗探测器中电子和光子感生事件的脉冲形状

Pulse shapes from electron and photon induced events in segmented high-purity germanium detectors

I. Abt, A. Caldwell, K. Kröninger, J. Liu, X. Liu, B. Majorovits

摘要:

为寻找无中微子双β衰变而建立的实验,其灵敏度不仅受到曝光量的限制,而且还受到所遇到的背景量的限制。探测器周围的放射性同位素会发出伽马辐射,预计将成为锗探测器阵列(GERDA)的重要背景源。本文介绍了在锗探测器中选择电子感生事件和鉴别光子感生事件的方法。该方法是基于对检测器响应的时间结构的分析。使用分段的GERDA原型探测器获取数据。结果表明,对探测器时间响应的分析可以用来区分多次散射光子和电子。

英文摘要:

Experiments built to search for neutrinoless double beta-decay are limited in their sensitivity not only by the exposure but also by the amount of background encountered. Radioactive isotopes in the surrounding of the detectors which emit gamma-radiation are expected to be a significant source of background in the GERmanium Detector Array, GERDA. Methods to select electron induced events and discriminate against photon induced events inside a germanium detector are presented in this paper. The methods are based on the analysis of the time structure of the detector response. Data were taken with a segmented GERDA prototype detector. It is shown that the analysis of the time response of the detector can be used to distinguish multiply scattered photons from electrons.

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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