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

Stoeckl, M.; Solodov, A. A.

doi:10.1016/j.nima.2019.04.046

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

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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:

Stoeckl, M. ^[1]; Solodov, A. A. ^[1]

Univ. of Rochester, NY (United States). Lab. for Laser Energetics

Publication Date:: Thu Apr 11 00:00:00 EDT 2019

Research Org.:: Univ. of Rochester, NY (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1507420

Alternate Identifier(s):: OSTI ID: 1547527

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

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                    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.

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                    Stoeckl, M., & Solodov, A. A. Refining instrument response functions with 3-D Monte Carlo simulations of differential hard x-ray spectrometers.  United States.  https://doi.org/10.1016/j.nima.2019.04.046

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                    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.  https://doi.org/10.1016/j.nima.2019.04.046.  https://www.osti.gov/servlets/purl/1507420.

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@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         = {Thu Apr 11 00:00:00 EDT 2019},

  month        = {Thu Apr 11 00:00:00 EDT 2019}

}

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