NDLI: Characterization of broad energy germanium detector (BEGe) as a candidate for the GERDA experiment

Content Provider	IEEE Xplore Digital Library
Author	di Vacri, A. Agostini, M. Bellotti, E. Cattadori, C.M. D'Andragora, A. Garfagnini, A. Laubenstein, M. Pandola, L. Ur, C.A.
Copyright Year	2009
Description	Author affiliation: INFN-Gran Sasso National Laboratory, Assergi, L'Aquila, Italy (di Vacri, A.; D'Andragora, A.; Laubenstein, M.; Pandola, L.) \|\| Department of Physics ¿Galileo Galilei¿, Padova University, Padova, Italy (Agostini, M.; Garfagnini, A.) \|\| INFN-Padova, Milano, Italy (Ur, C.A.) \|\| Department of Physics ¿G. Occhialini¿, Milano Bicocca Univerisity, Milano, Italy (Bellotti, E.) \|\| INFN-Milano Bicocca, Milano, Italy (Cattadori, C.M.)
Abstract	Broad Energy Germanium detectors (BEGe) offer an excellent discrimination power for pulse shape analysis of signals induced by interactions in the active volume of the detector. Such a feature makes them potential candidates for double beta decay experiments. In fact, analysis of time development of pulses allows to reject multi sites events (MSE) for which ionization takes place in more than one position, from single-site events (SSE) that release all the energy within a small volume. Double beta decay events, characterized by the interactions of the two electrons emitted, belong to the latter category of events, while MSE, mainly γ-rays interactions, constitute the background that has to be rejected. BEGe are currently considered as potential candidates the Phase II of GERDA experiment, looking for $^{76}Ge$ double beta decay at the INFN Underground Gran Sasso National Laboratory (LNGS). Characterization of a commercial BEGe from Canberra is presented together with the results of the pulse shape analysis. Moreover, a full detector model (electric field and pulse generation), developed to understand the pulse shape discrimination power of the detector and validated with dedicated measurements, is presented and discussed.
Starting Page	1761
Ending Page	1767
File Size	1534762
Page Count	7
File Format	PDF
ISBN	9781424439614
ISSN	10957863
DOI	10.1109/NSSMIC.2009.5402217
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Germanium Detectors Pulse shaping methods Radioactive decay Pulse measurements Shape measurement Signal analysis Computer vision Ionization Electron emission
Content Type	Text
Resource Type	Article

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