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Title: Prototyping an active neutron veto for SuperCDMS

Neutrons, originating cosmogenically or from radioactive decays, can produce signals in dark matter detectors that are indistinguishable from Weakly Interacting Massive Particles (WIMPs). To combat this background for the SuperCDMS SNOLAB experiment, we are investigating designs for an active neutron veto within the constrained space of the compact SuperCDMS passive shielding. The current design employs an organic liquid scintillator mixed with an agent to enhance thermal neutron captures, with the scintillation light collected using wavelength-shifting fibers and read out by silicon photo-multipliers. We will describe the proposed veto and its predicted efficiency in detail and give some recent results from our R&D and prototyping efforts.
Authors:
 [1] ;  [2]
  1. Department of Physics, Southern Methodist University, Dallas, Texas 75275 (United States)
  2. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
Publication Date:
OSTI Identifier:
22488732
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1672; Journal Issue: 1; Conference: LRT 2015: 5. international workshop in low radioactivity techniques, Seattle, WA (United States), 18-20 Mar 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CAPTURE; DESIGN; EFFICIENCY; LIQUID SCINTILLATION DETECTORS; LIQUIDS; NONLUMINOUS MATTER; NUCLEAR DECAY; READOUT SYSTEMS; SHIELDING; SI SEMICONDUCTOR DETECTORS; THERMAL NEUTRONS; VISIBLE RADIATION; WIMPS