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Title: Refining instrument response functions with 3-D Monte Carlo simulations of differential hard x-ray spectrometers

Abstract

Three x-ray spectrometers – the hard x-ray detector (HXRD), the bremsstrahlung MeV x-ray spectrometer (BMXS), and the hard x-ray image plate (HXIP) – areused here to estimate hot-electron bremsstrahlung spectrum parameters for inertial confinement fusion experiments on OMEGA. Using 1-D deterministically calculated response functions, they show significantly different estimates of spectrum slope temperature. For all three detectors, 3-D Geant4 Monte Carlo simulations are developed and used to compute instrument response functions. Simulations explain features in raw image-plate data, but only significantly improve systematic errors in predicted detector channel signals for BMXS and do not entirely eliminate the discrepancy between estimates of slope temperature.

Authors:
 [1];  [1]
  1. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Publication Date:
Research Org.:
Univ. of Rochester, NY (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1507420
Grant/Contract Number:  
NA0001944
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 931; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; X-ray imaging; X-ray spectrometers; X-ray detectors; Monte Carlo

Citation Formats

Stoeckl, M., and Solodov, A. A.. Refining instrument response functions with 3-D Monte Carlo simulations of differential hard x-ray spectrometers. United States: N. p., 2019. Web. doi:10.1016/j.nima.2019.04.046.
Stoeckl, M., & Solodov, A. A.. Refining instrument response functions with 3-D Monte Carlo simulations of differential hard x-ray spectrometers. United States. doi:10.1016/j.nima.2019.04.046.
Stoeckl, M., and Solodov, A. A.. Thu . "Refining instrument response functions with 3-D Monte Carlo simulations of differential hard x-ray spectrometers". United States. doi:10.1016/j.nima.2019.04.046.
@article{osti_1507420,
title = {Refining instrument response functions with 3-D Monte Carlo simulations of differential hard x-ray spectrometers},
author = {Stoeckl, M. and Solodov, A. A.},
abstractNote = {Three x-ray spectrometers – the hard x-ray detector (HXRD), the bremsstrahlung MeV x-ray spectrometer (BMXS), and the hard x-ray image plate (HXIP) – areused here to estimate hot-electron bremsstrahlung spectrum parameters for inertial confinement fusion experiments on OMEGA. Using 1-D deterministically calculated response functions, they show significantly different estimates of spectrum slope temperature. For all three detectors, 3-D Geant4 Monte Carlo simulations are developed and used to compute instrument response functions. Simulations explain features in raw image-plate data, but only significantly improve systematic errors in predicted detector channel signals for BMXS and do not entirely eliminate the discrepancy between estimates of slope temperature.},
doi = {10.1016/j.nima.2019.04.046},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = ,
volume = 931,
place = {United States},
year = {2019},
month = {4}
}

Journal Article:
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This content will become publicly available on April 11, 2020
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