Bremsstrahlung hard x-ray source driven by an electron beam from a self-modulated laser wakefield accelerator

doi:10.1088/1361-6587/aab3b5

Title: Bremsstrahlung hard x-ray source driven by an electron beam from a self-modulated laser wakefield accelerator

Abstract

An x-ray source generated by an electron beam produced using a Self-Modulated Laser Wakefield Accelerator (SM-LWFA) is explored for use in high energy density science facilities. By colliding the electron beam, with a maximum energy of 380 MeV, total charge of >10 nC and a divergence of 64 x 100 mrad, from a SM-LWFA driven by a 1ps 120 J laser, into a high-Z foil, an x/gamma-ray source was generated. A broadband bremsstrahlung energy spectrum with temperatures ranging from 0.8 to 2 MeV was measured with an almost 2 orders of magnitude flux increase when compared with other schemes using LWFA. GEANT4 simulations were done to calculate the source size and divergence.

Authors:

^[1]; Albert, F. ^[1];

^[2]; Papp, D. ^[3]; Polanek, R. ^[3]; King, P. ^[4]; Milder, A. L. ^[2]; Marsh, K. A. ^[5]; Pak, A. ^[1]; Pollock, B. B. ^[1]; Hegelich, B. M. ^[6]; Moody, J. D. ^[1]; Park, J. ^[1]; Tommasini, R. ^[1]; Williams, G. J. ^[1]; Chen, Hui ^[1]; Joshi, C. ^[5]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
ELI-ALPS, Szeged (Hungary)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of Texas, Austin, TX (United States)
Univ. of California, Los Angeles, CA (United States)
Univ. of Texas, Austin, TX (United States)

Publication Date:: 2018-03-22

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

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

OSTI Identifier:: 1542711

Report Number(s):: LLNL-JRNL-742935
Journal ID: ISSN 0741-3335; 897945

Grant/Contract Number:: AC52-07NA27344

Resource Type:: Accepted Manuscript

Journal Name:: Plasma Physics and Controlled Fusion

Additional Journal Information:: Journal Volume: 60; Journal Issue: 5; Journal ID: ISSN 0741-3335

Publisher:: IOP Science

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats


                    Lemos, N., Albert, F., Shaw, J. L., Papp, D., Polanek, R., King, P., Milder, A. L., Marsh, K. A., Pak, A., Pollock, B. B., Hegelich, B. M., Moody, J. D., Park, J., Tommasini, R., Williams, G. J., Chen, Hui, and Joshi, C. Bremsstrahlung hard x-ray source driven by an electron beam from a self-modulated laser wakefield accelerator.  United States: N. p., 2018. 
        Web.  doi:10.1088/1361-6587/aab3b5.

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                    Lemos, N., Albert, F., Shaw, J. L., Papp, D., Polanek, R., King, P., Milder, A. L., Marsh, K. A., Pak, A., Pollock, B. B., Hegelich, B. M., Moody, J. D., Park, J., Tommasini, R., Williams, G. J., Chen, Hui, & Joshi, C. Bremsstrahlung hard x-ray source driven by an electron beam from a self-modulated laser wakefield accelerator.  United States.  doi:10.1088/1361-6587/aab3b5.

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                    Lemos, N., Albert, F., Shaw, J. L., Papp, D., Polanek, R., King, P., Milder, A. L., Marsh, K. A., Pak, A., Pollock, B. B., Hegelich, B. M., Moody, J. D., Park, J., Tommasini, R., Williams, G. J., Chen, Hui, and Joshi, C. Thu .  
        "Bremsstrahlung hard x-ray source driven by an electron beam from a self-modulated laser wakefield accelerator".  United States.  doi:10.1088/1361-6587/aab3b5.  https://www.osti.gov/servlets/purl/1542711.

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@article{osti_1542711,

  title        = {Bremsstrahlung hard x-ray source driven by an electron beam from a self-modulated laser wakefield accelerator},

  author       = {Lemos, N. and Albert, F. and Shaw, J. L. and Papp, D. and Polanek, R. and King, P. and Milder, A. L. and Marsh, K. A. and Pak, A. and Pollock, B. B. and Hegelich, B. M. and Moody, J. D. and Park, J. and Tommasini, R. and Williams, G. J. and Chen, Hui and Joshi, C.},

  abstractNote = {An x-ray source generated by an electron beam produced using a Self-Modulated Laser Wakefield Accelerator (SM-LWFA) is explored for use in high energy density science facilities. By colliding the electron beam, with a maximum energy of 380 MeV, total charge of >10 nC and a divergence of 64 x 100 mrad, from a SM-LWFA driven by a 1ps 120 J laser, into a high-Z foil, an x/gamma-ray source was generated. A broadband bremsstrahlung energy spectrum with temperatures ranging from 0.8 to 2 MeV was measured with an almost 2 orders of magnitude flux increase when compared with other schemes using LWFA. GEANT4 simulations were done to calculate the source size and divergence.},

  doi          = {10.1088/1361-6587/aab3b5},

  journal      = {Plasma Physics and Controlled Fusion},

  number       = 5,

  volume       = 60,

  place        = {United States},

  year         = {2018},

  month        = {3}

}

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Journal Article:

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DOI: 10.1088/1361-6587/aab3b5

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Cited by: 8 works

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Figures / Tables:

Figure 1: Experimental setup for generating Bremsstrahlung radiation from relativistic electrons produced by SM-LWFA at the Jupiter Laser Facility using the Titan Laser. The Titan laser (red beam) is focused by an OAP into a 4 mm supersonic gas jet. The probe beam (green) crosses the plasma generated by themore »

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