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arXiv · 0704.3016

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
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Abstract

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.

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I. Abt, A. Caldwell, K. Kröninger, J. Liu, X. Liu, B. Majorovits. 2007-04-23. Pulse shapes from electron and photon induced events in segmented high-purity germanium detectors. https://doi.org/10.1140/epjc%2Fs10052-007-0390-8

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