Majorana Electroformed Copper Mechanical Analysis

Overman, Nicole R. ; Overman, Cory T. ; Kafentzis, Tyler A. ; Edwards, Danny J. ; Hoppe, Eric W.

Pacific Northwest National Laboratory (U.S.)

关键词: Copper;    46 Instrumentation Related To Nuclear Science And Technology;    Decay;    Shielding;    Specifications;   

DOI  :  10.2172/1039850
RP-ID  :  PNNL-21315
RP-ID  :  AC05-76RL01830
RP-ID  :  1039850

美国|英语

来源: UNT Digital Library

【 摘 要 】

The MAJORANA DEMONSTRATOR is a large array of ultra-low background high-purity germanium detectors, enriched in 76Ge, designed to search for zero-neutrino double-beta decay. The DEMONSTRATOR will utilize ultra high purity electroformed copper for a variety of detector components and shielding. A preliminary mechanical evaluation was performed on the Majorana prototype electroformed copper material. Several samples were removed from a variety of positions on the mandrel. Tensile testing, optical metallography, scanning electron microscopy, and hardness testing were conducted to evaluate mechanical response. Analyses carried out on the Majorana prototype copper to this point show consistent mechanical response from a variety of test locations. Evaluation shows the copper meets or exceeds the design specifications.