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

Conference · Wed Jan 01 00:00:00 EST 2014

DOI:https://doi.org/10.1016/j.nima.2013.08.081· OSTI ID:1481687

Leviner, L. ^[1]; Aalseth, C. E. ^[2]; Radford, David C.  ^[3]; Young, A.R. ^[1]

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1. North Carolina State University (NCSU), Raleigh
2. Pacific Northwest National Laboratory (PNNL)
3. ORNL

We present data characterizing the performance of the first segmented, N-type Ge detector, isotopically enriched to 85% 76Ge. This detector, based on the Ortec PT6×2 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 the 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.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1481687
• Resource Relation: Journal Volume: 735; Conference: Low Radioactivity Techniques 2015 (LRT 2015) - Seattle, Washington, United States of America - 3/18/2015 4:00:00 AM-3/20/2015 4:00:00 AM
• Country of Publication: United States
• Language: English