A segmented, enriched N-type germanium detector for neutrinoless double beta-decay experiments

作者：Leviner L E^*; Aalseth C E; Ahmed M W; Avignone F T III; Back H O; Barabash A S; Boswell M; De Braeckeleer L; Brudanin V B; Chan Y D; Egorov V G; Elliott S R; Gehman V M; Hos**ach T W; Kephart J D; Kidd M F; Konovalov S I; Lesko K T; Li Jingyi; Mei D M; Mikhailov S; Miley H; Radford D C; Reeves J; Sandukovsky V G; Umatov V I; Underwood T A; Tornow W; Wu Y K; Young A R

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2014, 735: 66-77.

DOI：10.1016/j.nima.2013.08.081

• Double beta decay
• Segmented
• Germanium
• Detector
• Majorana
• Neutrinoless

We present data characterizing the performance of the first segmented, N-type Ge detector, isotopically enriched to 85% Ge-76. This detector, based on the Ortec PT6 x 2 design and referred to as SEGA (Segmented, Enriched Germanium Assembly), was developed as a possible prototype for neutrinoless double beta-decay measurements by the MAJORANA collaboration. We present some of the general characteristics (including bias potential, efficiency, leakage current, and integral cross-talk) for this detector in its temporary cryostat. We also present an analysis of this resolution of the detector, and demonstrate that for all but two segments there is at least one channel that reaches the MAJORANA resolution goal below 4 keV FWHM at 2039 keV, and all channels are below 4.5 keV FWHM.

• 出版日期2014-1-21
• 单位Los Alamos