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Title: A Directional Detector Response Function for Anisotropic Detectors

Abstract

For a radiation detector that is not isotropic, a directional detector response is needed to accurately account for the variation in a detector’s behavior depending on the incoming particle direction. The concept of the detector response function has been extended to include particle direction using a set of pregenerated detector responses based on the orientation of the incoming radiation and the detector. This directional detector response function (DDRF) then can be applied to the flux and current tallies computed by a Monte Carlo simulation. Validation of the new approach has been done by comparing simulated count rates processed with the DDRF to measured count rates taken with a 5.08 × 10.16 × 40.64-cm NaI(Tl) detector. The comparisons show that the applied method produces good agreement with both background and source measurements with a 137Cs source. Furthermore, separation of the detector response generation from Monte Carlo particle transport calculations provides greater flexibility in locating single or multiple detectors without any interference in the model and also enables simulation of various models using the same detector response without the need for generating additional detector responses if the same detector is being used.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1545218
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Science and Engineering
Additional Journal Information:
Journal Name: Nuclear Science and Engineering; Journal ID: ISSN 0029-5639
Publisher:
American Nuclear Society - Taylor & Francis
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 42 ENGINEERING; 98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION

Citation Formats

Celik, Cihangir, Peplow, Douglas E., Davidson, Gregory G., and Swinney, Mathew W. A Directional Detector Response Function for Anisotropic Detectors. United States: N. p., 2019. Web. doi:10.1080/00295639.2019.1631028.
Celik, Cihangir, Peplow, Douglas E., Davidson, Gregory G., & Swinney, Mathew W. A Directional Detector Response Function for Anisotropic Detectors. United States. doi:10.1080/00295639.2019.1631028.
Celik, Cihangir, Peplow, Douglas E., Davidson, Gregory G., and Swinney, Mathew W. Fri . "A Directional Detector Response Function for Anisotropic Detectors". United States. doi:10.1080/00295639.2019.1631028.
@article{osti_1545218,
title = {A Directional Detector Response Function for Anisotropic Detectors},
author = {Celik, Cihangir and Peplow, Douglas E. and Davidson, Gregory G. and Swinney, Mathew W.},
abstractNote = {For a radiation detector that is not isotropic, a directional detector response is needed to accurately account for the variation in a detector’s behavior depending on the incoming particle direction. The concept of the detector response function has been extended to include particle direction using a set of pregenerated detector responses based on the orientation of the incoming radiation and the detector. This directional detector response function (DDRF) then can be applied to the flux and current tallies computed by a Monte Carlo simulation. Validation of the new approach has been done by comparing simulated count rates processed with the DDRF to measured count rates taken with a 5.08 × 10.16 × 40.64-cm NaI(Tl) detector. The comparisons show that the applied method produces good agreement with both background and source measurements with a 137Cs source. Furthermore, separation of the detector response generation from Monte Carlo particle transport calculations provides greater flexibility in locating single or multiple detectors without any interference in the model and also enables simulation of various models using the same detector response without the need for generating additional detector responses if the same detector is being used.},
doi = {10.1080/00295639.2019.1631028},
journal = {Nuclear Science and Engineering},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {7}
}

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