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Title: Predicting the sensitivity of the beryllium/scintillator layer neutron detector using Monte Carlo and experimental response functions

A methodology for obtaining empirical curves relating absolute measured scintillation light output to beta energy deposited is presented. Output signals were measured from thin plastic scintillator using NIST traceable beta and gamma sources and MCNP5 was used to model the energy deposition from each source. Combining the experimental and calculated results gives the desired empirical relationships. To validate, the sensitivity of a beryllium/scintillator-layer neutron activation detector was predicted and then exposed to a known neutron fluence from a Deuterium-Deuterium fusion plasma (DD). The predicted and the measured sensitivity were in statistical agreement.
Authors:
; ; ;  [1] ; ; ; ; ; ;  [2]
  1. Department of Nuclear Engineering, University of New Mexico, Albuquerque, New Mexico 87131 (United States)
  2. Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)
Publication Date:
OSTI Identifier:
22303477
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 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; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACTIVATION DETECTORS; BERYLLIUM; BETA SOURCES; DEUTERIUM; ENERGY ABSORPTION; GAMMA SOURCES; MONTE CARLO METHOD; NEUTRON DETECTORS; NEUTRON FLUENCE; PLASMA; PLASTIC SCINTILLATORS; RESPONSE FUNCTIONS; SCINTILLATIONS; SENSITIVITY