Recommendations for a Static Cosmic Ray Shield for Enriched Germanium Detectors

Aguayo Navarrete, Estanislao ; Orrell, John L. ; Ankney, Austin S. ; Berguson, Timothy J.

关键词: CONSTRUCTION;    DECAY;    EFFICIENCY;    GE SEMICONDUCTOR DETECTORS;    GERMANIUM;    RECOMMENDATIONS;    SHIELDING;    SHIELDS;    STORAGE HPGe;    Shielding material;    Cosmic-ray showers;    neutron activation;   

DOI  :  10.2172/1032696
RP-ID  :  PNNL-20740
PID  :  OSTI ID: 1032696
Others  :  Other: 830403000
Others  :  TRN: US1200573

学科分类：核能源与工程

美国|英语

来源: SciTech Connect

【 摘 要 】

This document provides a detailed study of cost and materials that could be used to shield the detector material of the international Tonne-scale germanium neutrinoless double-beta decay experiment from hadronic particles from cosmic ray showers at the Earth's surface. This work was motivated by the need for a shield that minimizes activation of the enriched germanium during storage; in particular, when the detector material is being worked on at the detector manufacturer's facility. This work considers two options for shielding the detector material from cosmic ray particles. One option is to use a pre-existing structure already located near the detector manufacturer, such as Canberra Industries in Meriden, Connecticut. The other option is to build a shield onsite at a detector manufacturer's site. This paper presents a cost and efficiency analysis of such construction.