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Title: A database for storing the results of material radiopurity measurements

Searches for rare nuclear processes, such as neutrinoless double beta-decay and the interactions of WIMP dark matter, are motivating experiments with ever-decreasing levels of radioactive backgrounds. These background reductions are achieved using various techniques, but amongst the most important is minimizing radioactive contamination in the materials from which the experiment is constructed. To this end there have been decades of advances in material sourcing, manufacture and certification, during which researchers have accumulated many thousands of measurements of material radiopurity. Some of these assays are described in publications, others are in databases, but many are still communicated informally. Until this work, there has been no standard format for encoding assay results and no effective, central location for storing them. The aim of this paper is to address these long-standing problems by creating a concise and flexible material assay data format and powerful software application to manipulate it. Finally, a public installation of this software, available at, is the largest database of assay results ever compiled and is intended as a long-term repository for the community's data.
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [5]
  1. Shanghai Jiao Tong Univ. (China). Dept. of Physics and Astronomy; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division
  2. Southern Methodist Univ., Dallas, TX (United States). Dept. of Physics
  3. Karlsruhe Inst. of Technology (KIT) (Germany). Inst. for Nuclear Physics
  4. Shanghai Jiao Tong Univ. (China). Dept. of Physics and Astronomy
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division
Publication Date:
Grant/Contract Number:
AC02-05CH11231; PHY 124260; 11DZ2260700
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 839; Journal ID: ISSN 0168-9002
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Shanghai Jiao Tong Univ. (China); Karlsruhe Inst. of Technology (KIT) (Germany)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Science Foundation (NSF); Shanghai Key Lab. for Particle Physics and Cosmology (China); Helmholtz Association (Germany)
Country of Publication:
United States
74 ATOMIC AND MOLECULAR PHYSICS; database; radiation; neutrinoless double-beta decay; WIMP dark matter; radiopurity; materials
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1430552