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Title: Experimental Validation of MCNP Models for PINS Shadow Shield Mockups

Abstract

MCNP has been regarded as an indispensable tool in development of radiation detection systems, and it is cost effective, thanks to advances in computing power, to simulate various conceptual designs without even fabricating them. Development of various PINS systems have also benefited from MCNP modeling and simulation. MCNP models of PINS systems have been frequently used to understand detector responses and to fill the gap in experimental data. Recently, a backpack version PINS system was announced to be developed. When the neutron generator and the HPGe detector are built by external vendors, the shadow shield is the component to be designed to maximize the performance while meeting the sponsor’s requirements. In order to utilize MCNP modeling and simulation to find the best specification of the shadow shield, a campaign of PINS lab measurements with a few shadow shield mockups has been conducted to validate MCNP simulation results. This study is intended to validate MCNP simulations and models in preparation of another more extensive simulation study. Validation of neutron flux is also discussed later in this report even though neutron counts were not measured experimentally.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Idaho National Laboratory
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1529898
Report Number(s):
INL/EXT-19-54207-Rev000
DOE Contract Number:  
AC07-05ID14517
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
73 - NUCLEAR PHYSICS AND RADIATION PHYSICS; 46 - INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; Neutron generator; Neutron activation analysis; D-D neutron generator; MCNP; Neutron transport modeling and simulation; Portable Isotopic Neutron Spectroscopy; Chemical warfare agents; Validation and verification; Neutron shadow shield

Citation Formats

Lee, Dongwon, Bucher, Brian M, Krebs, Kenneth M, Seabury, Edward H, and Wharton, Jayson. Experimental Validation of MCNP Models for PINS Shadow Shield Mockups. United States: N. p., 2019. Web. doi:10.2172/1529898.
Lee, Dongwon, Bucher, Brian M, Krebs, Kenneth M, Seabury, Edward H, & Wharton, Jayson. Experimental Validation of MCNP Models for PINS Shadow Shield Mockups. United States. doi:10.2172/1529898.
Lee, Dongwon, Bucher, Brian M, Krebs, Kenneth M, Seabury, Edward H, and Wharton, Jayson. Thu . "Experimental Validation of MCNP Models for PINS Shadow Shield Mockups". United States. doi:10.2172/1529898. https://www.osti.gov/servlets/purl/1529898.
@article{osti_1529898,
title = {Experimental Validation of MCNP Models for PINS Shadow Shield Mockups},
author = {Lee, Dongwon and Bucher, Brian M and Krebs, Kenneth M and Seabury, Edward H and Wharton, Jayson},
abstractNote = {MCNP has been regarded as an indispensable tool in development of radiation detection systems, and it is cost effective, thanks to advances in computing power, to simulate various conceptual designs without even fabricating them. Development of various PINS systems have also benefited from MCNP modeling and simulation. MCNP models of PINS systems have been frequently used to understand detector responses and to fill the gap in experimental data. Recently, a backpack version PINS system was announced to be developed. When the neutron generator and the HPGe detector are built by external vendors, the shadow shield is the component to be designed to maximize the performance while meeting the sponsor’s requirements. In order to utilize MCNP modeling and simulation to find the best specification of the shadow shield, a campaign of PINS lab measurements with a few shadow shield mockups has been conducted to validate MCNP simulation results. This study is intended to validate MCNP simulations and models in preparation of another more extensive simulation study. Validation of neutron flux is also discussed later in this report even though neutron counts were not measured experimentally.},
doi = {10.2172/1529898},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {6}
}

Technical Report:

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