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Title: Final Report: Water-Based Neutron Detector Technology for Material Characterization Well Counters

Coincidence counting of neutron pairs is an effective way to non-destructively determine the amount of fissile material within a sample of special nuclear material (SNM) [1]. Multiplicity counting is more versatile and precise, but also more demanding, requiring the detection of three or more neutrons per single fission event. Detecting a triple coincidence of neutrons depends on the 3rd power of the detection efficiency and so on. The detection efficiency quickly becomes the critical determining factor in evaluating the utility of a particular neutron multiplicity detection technique. The purpose of this feasibility study was to characterize the performance of an LLNLdesigned water Cherenkov based Multiplicity Well counter.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
OSTI Identifier:
1116970
Report Number(s):
LLNL-TR--648508
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Technical Report
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS