Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session Q10: WIMP Dark Matter III
10:45 AM–12:33 PM,
Monday, April 15, 2019
Sheraton
Room: Governor's Square 12
Sponsoring
Unit:
DPF
Chair: Ray Bunker, PNNL
Abstract: Q10.00004 : Background Explorer: A Toolkit for Modeling Radioactive Backgrounds in Low Background Detectors*
11:21 AM–11:33 AM
Presenter:
Ben Loer
(Pacific Northwest Natl Lab)
Author:
Ben Loer
(Pacific Northwest Natl Lab)
Collaboration:
SuperCDMS
Background contributions for the upcoming SuperCDMS SNOLAB experiment are estimated by simulating decay chains of naturally-occurring radioactive elements in the cryostat, readout system, and shielding. Absolute background rates are predicted by normalizing to contamination levels determined by material assay. The current model includes 374 components and assemblies and 864 simulation datasets. We have developed a tool, called Background Explorer, to manage this complex model, which includes a web interface intended to provide insights into relative background contribution levels and help guide detector design decisions related to background control. I will describe the design and use of this system for SuperCDMS, and present version 2, which has been significantly redesigned to facilitate use by a wider variety of low-background experiments.
*Pacific Northwest National Laboratory is operated by Battelle Memorial Institute under Contract No. DE-AC05-76RL01830 for the U.S. Department of Energy.
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