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Title: Neutron Activation Foil and Thermoluminescent Dosimeter Responses to a Polyethylene Reflected Pulse of the CEA Valduc SILENE Critical Assembly

This benchmark experiment was conducted as a joint venture between the US Department of Energy (DOE) and the French Commissariat à l'Energie Atomique (CEA). Staff at the Oak Ridge National Laboratory (ORNL) in the US and the Centre de Valduc in France planned this experiment. The experiment was conducted on October 19, 2010 in the SILENE critical assembly facility at Valduc. Several other organizations contributed to this experiment and the subsequent evaluation, including CEA Saclay, Lawrence Livermore National Laboratory (LLNL), the Y-12 National Security Complex (NSC), Babcock International Group in the United Kingdom, and Los Alamos National Laboratory (LANL). The goal of this experiment was to measure neutron activation and thermoluminescent dosimeter (TLD) doses from a source similar to a fissile solution critical excursion. The resulting benchmark can be used for validation of computer codes and nuclear data libraries as required when performing analysis of criticality accident alarm systems (CAASs). A secondary goal of this experiment was to qualitatively test performance of two CAAS detectors similar to those currently and formerly in use in some US DOE facilities. The detectors tested were the CIDAS MkX and the Rocky Flats NCD-91. The CIDAS detects gammas with a Geiger-Muller tube and themore » Rocky Flats detects neutrons via charged particles produced in a thin 6LiF disc depositing energy in a Si solid state detector. These detectors were being evaluated to determine whether they would alarm, so they were not expected to generate benchmark quality data.« less
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [4] ;  [4] ;  [4] ;  [5]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. French Atomic Energy Commission (CEA), Saclay (France)
  3. French Atomic Energy Commission (CEA), Centre de Saclay, Gif sur Yvette
  4. French Atomic Energy Commission (CEA), Salives (France). Valduc Centre for Nuclear Studies
  5. Y-12 National Security Complex, Oak Ridge, TN (United States)
Publication Date:
OSTI Identifier:
1327663
Report Number(s):
ORNL/TM--2016/317
DP0909010; DPDP097; alarm-tran-ch2-shield-001; TRN: US1700310
DOE Contract Number:
AC05-00OR22725
Resource Type:
Technical Report
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; NEUTRONS; SILENE REACTOR; THERMOLUMINESCENT DOSEMETERS; BENCHMARKS; POLYETHYLENES; SOLUTIONS; CRITICALITY; EXCURSIONS; JOINT VENTURES; RADIATION ACCIDENTS; FOILS; PULSES; VALIDATION; NUCLEAR DATA COLLECTIONS; ALARM SYSTEMS; CHARGED PARTICLES; COMPUTER CODES; RADIATION DOSES; EVALUATION; PERFORMANCE; GEIGER-MUELLER COUNTERS; LITHIUM 6; LITHIUM FLUORIDES; SI SEMICONDUCTOR DETECTORS; ACTIVATION DETECTORS; FISSILE MATERIALS acceptable; CAAS; energy spectrum; neutron; neutron activation; photon; SILENE; TLD; uranyl nitrate; polyethylene and cadmium shield