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Title: IER-407 CED-3b Rev-1: Experiment Execution Report for the Inherently Safe Subcritical Assembly (ISSA) Subcritical Measurements

Abstract

This set of benchmark subcritical multiplicity experiments was conducted at the ISSA experiment center of Lawrence Livermore National Laboratory. The purpose of these subcritical experiments, as described in the ISSA final design report, was to measure fission neutrons by collecting time-tagged data corresponding to a maximum multiplication of approximately 20. The fission source for this experiment was Materials Test Reactor (MTR)-type highly enriched uranium fuel assembly, which is composed of nineteen fuel plates. One, two, four, six and nine ISSA fuel assemblies were closely packed and loaded inside a support fixture assembly and immersed in water. Four 3He proportional counters were placed around the fuel assemblies, and list-mode experimental data was taken. Additionally, efficiency calibration measurements with calibrated neutron sources were conducted. The LLNL developed codes BIGFIT and OSANTI RESTART will be used to evaluate the measured data and calculate the experimental multiplication.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1438724
Report Number(s):
LLNL-TR-750908
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 74 ATOMIC AND MOLECULAR PHYSICS

Citation Formats

Nelson, Anthony J., Zywiec, Will J., Kim, Soon S., Kerr, Phil L., Coleman, Shauntay E., and Heinrichs, David P. IER-407 CED-3b Rev-1: Experiment Execution Report for the Inherently Safe Subcritical Assembly (ISSA) Subcritical Measurements. United States: N. p., 2018. Web. doi:10.2172/1438724.
Nelson, Anthony J., Zywiec, Will J., Kim, Soon S., Kerr, Phil L., Coleman, Shauntay E., & Heinrichs, David P. IER-407 CED-3b Rev-1: Experiment Execution Report for the Inherently Safe Subcritical Assembly (ISSA) Subcritical Measurements. United States. doi:10.2172/1438724.
Nelson, Anthony J., Zywiec, Will J., Kim, Soon S., Kerr, Phil L., Coleman, Shauntay E., and Heinrichs, David P. Mon . "IER-407 CED-3b Rev-1: Experiment Execution Report for the Inherently Safe Subcritical Assembly (ISSA) Subcritical Measurements". United States. doi:10.2172/1438724. https://www.osti.gov/servlets/purl/1438724.
@article{osti_1438724,
title = {IER-407 CED-3b Rev-1: Experiment Execution Report for the Inherently Safe Subcritical Assembly (ISSA) Subcritical Measurements},
author = {Nelson, Anthony J. and Zywiec, Will J. and Kim, Soon S. and Kerr, Phil L. and Coleman, Shauntay E. and Heinrichs, David P.},
abstractNote = {This set of benchmark subcritical multiplicity experiments was conducted at the ISSA experiment center of Lawrence Livermore National Laboratory. The purpose of these subcritical experiments, as described in the ISSA final design report, was to measure fission neutrons by collecting time-tagged data corresponding to a maximum multiplication of approximately 20. The fission source for this experiment was Materials Test Reactor (MTR)-type highly enriched uranium fuel assembly, which is composed of nineteen fuel plates. One, two, four, six and nine ISSA fuel assemblies were closely packed and loaded inside a support fixture assembly and immersed in water. Four 3He proportional counters were placed around the fuel assemblies, and list-mode experimental data was taken. Additionally, efficiency calibration measurements with calibrated neutron sources were conducted. The LLNL developed codes BIGFIT and OSANTI RESTART will be used to evaluate the measured data and calculate the experimental multiplication.},
doi = {10.2172/1438724},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {5}
}

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