Progress in evaluation of multi-site rejection techniques in a highly segmented HPGe detector in a low-background environment

David Campbell; Kai Vetter; Kevin Lesko; Reyco Henning; Yuen-Dat Chan; Allan Poon; Michelle Perry

doi:10.1117/12.683854

30 August 2006 Progress in evaluation of multi-site rejection techniques in a highly segmented HPGe detector in a low-background environment

David Campbell, Kai Vetter, Kevin Lesko, Reyco Henning, Yuen-Dat Chan, Allan Poon, Michelle Perry

Author Affiliations +

Proceedings Volume 6319, Hard X-Ray and Gamma-Ray Detector Physics and Penetrating Radiation Systems VIII; 63190G (2006) https://doi.org/10.1117/12.683854
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

A 40-fold segmented coaxial HPGe detector was operated in a low background counting facility for 1 year to experimentally evaluate background rejection efficiencies of proposed segmentation and pulse shape discrimination techniques for the proposed Majorana double-beta decay experiment. Significantly diminished resolution for multisegment events was encountered due to inter-segment cross-talk. A cross-talk correlation matrix has been constructed allowing the restoration of acceptable energy resolution for multi-segment events. Efforts to determine the optimum segmentation pattern for multi-site interaction events are ongoing.

Citation Download Citation

David Campbell, Kai Vetter, Kevin Lesko, Reyco Henning, Yuen-Dat Chan, Allan Poon, and Michelle Perry "Progress in evaluation of multi-site rejection techniques in a highly segmented HPGe detector in a low-background environment", Proc. SPIE 6319, Hard X-Ray and Gamma-Ray Detector Physics and Penetrating Radiation Systems VIII, 63190G (30 August 2006); https://doi.org/10.1117/12.683854

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