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Title: Simulations of the generation and transport of a 5 MV end-point x-ray beam on a pulsed power generator

Abstract

An experimental campaign was recently completed at the U.S. Naval Research Laboratory’s Mercury pulsed-power facility, where the feasibility of using a 5 MV inductive voltage adder (IVA) as a pulsed photoneutron source was studied. In these experiments, a large-area bremsstrahlung diode was fielded on the Mercury accelerator, producing an intense, pulsed x-ray beam, which generated photoneutrons when striking an appropriate target. This paper reports on simulations that were performed to study the production of the electron beam in the diode, and the generation and transport of the x-ray beam. Comparison is made between the numerically predicted beam properties and results obtained during the experimental campaign. Various models of electron and ion emission from the electrodes in the generator were simulated, and the effect of model parameter choices on the dose predictions is described.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1512354
Alternate Identifier(s):
OSTI ID: 1523240
Report Number(s):
LA-UR-19-20335
Journal ID: ISSN 2469-9888; PRABCJ; 050401
Grant/Contract Number:  
AC52-06NA25396; 89233218CNA000001
Resource Type:
Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Name: Physical Review Accelerators and Beams Journal Volume: 22 Journal Issue: 5; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; pulsed neutron source

Citation Formats

Richardson, A. S., Zier, J. C., Engelbrecht, J. T., Swanekamp, S. B., Schumer, J. W., Mosher, D., Ottinger, P. F., Duke, D. L., Haines, T. J., McCumber, M. P., and Gehring, A. Simulations of the generation and transport of a 5 MV end-point x-ray beam on a pulsed power generator. United States: N. p., 2019. Web. doi:10.1103/PhysRevAccelBeams.22.050401.
Richardson, A. S., Zier, J. C., Engelbrecht, J. T., Swanekamp, S. B., Schumer, J. W., Mosher, D., Ottinger, P. F., Duke, D. L., Haines, T. J., McCumber, M. P., & Gehring, A. Simulations of the generation and transport of a 5 MV end-point x-ray beam on a pulsed power generator. United States. doi:10.1103/PhysRevAccelBeams.22.050401.
Richardson, A. S., Zier, J. C., Engelbrecht, J. T., Swanekamp, S. B., Schumer, J. W., Mosher, D., Ottinger, P. F., Duke, D. L., Haines, T. J., McCumber, M. P., and Gehring, A. Mon . "Simulations of the generation and transport of a 5 MV end-point x-ray beam on a pulsed power generator". United States. doi:10.1103/PhysRevAccelBeams.22.050401.
@article{osti_1512354,
title = {Simulations of the generation and transport of a 5 MV end-point x-ray beam on a pulsed power generator},
author = {Richardson, A. S. and Zier, J. C. and Engelbrecht, J. T. and Swanekamp, S. B. and Schumer, J. W. and Mosher, D. and Ottinger, P. F. and Duke, D. L. and Haines, T. J. and McCumber, M. P. and Gehring, A.},
abstractNote = {An experimental campaign was recently completed at the U.S. Naval Research Laboratory’s Mercury pulsed-power facility, where the feasibility of using a 5 MV inductive voltage adder (IVA) as a pulsed photoneutron source was studied. In these experiments, a large-area bremsstrahlung diode was fielded on the Mercury accelerator, producing an intense, pulsed x-ray beam, which generated photoneutrons when striking an appropriate target. This paper reports on simulations that were performed to study the production of the electron beam in the diode, and the generation and transport of the x-ray beam. Comparison is made between the numerically predicted beam properties and results obtained during the experimental campaign. Various models of electron and ion emission from the electrodes in the generator were simulated, and the effect of model parameter choices on the dose predictions is described.},
doi = {10.1103/PhysRevAccelBeams.22.050401},
journal = {Physical Review Accelerators and Beams},
number = 5,
volume = 22,
place = {United States},
year = {2019},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevAccelBeams.22.050401

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Cited by: 1 work
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    Works referencing / citing this record:

    Particle-in-cell simulations of current loss in magnetically insulated transmission line with inductive helical support
    journal, August 2019