X-ray analysis methods for sources from self-modulated laser wakefield acceleration driven by picosecond lasers

King, P. M.; Lemos, N.; Shaw, J. L.; Milder, A. L.; Marsh, K. A.; Pak, A.; Hegelich, B. M.; Michel, P.; Moody, J.; Joshi, C.; Albert, F.

doi:10.1063/1.5082965

Title: X-ray analysis methods for sources from self-modulated laser wakefield acceleration driven by picosecond lasers

Abstract

A versatile set of methods for analyzing x-ray energy spectra and photon flux has been developed for laser plasma accelerator experiments driven by picosecond lasers. Forward fit provides extrapolated broad energy spectrum measurements, while Ross pair and differential average transmission analysis provide directly measured data points using a particular diagnostic. Combining these methods allows the measurement of x-ray energy spectra with improved confidence. We apply the methods to three diagnostics (filter wheel, stacked image plate spectrometer, and step wedge), each sensitive to a different region of x-ray energies (<40 keV, 35–100 keV, and 60–1000 keV, respectively), to characterize the analysis methods using laser-driven bremsstrahlung x-rays. We then apply the methods to measure three x-ray mechanisms, betatron, inverse Compton scattering, and bremsstrahlung, driven by a laser plasma accelerator. The analysis results in the measurement of x-ray energy spectra ranging from 10 keV to 1 MeV with peak flux greater than 1010 photons/keV/Sr. The combined analysis methods provide a robust tool to accurately measure broadband x-ray sources (keV to MeV) driven by laser plasma acceleration with picosecond, kilojoule-class lasers.

Authors:

^[1];

^[2]; Shaw, J. L. ^[3]; Milder, A. L. ^[3]; Marsh, K. A. ^[4]; Pak, A. ^[2];

^[5]; Michel, P. ^[2]; Moody, J. ^[2]; Joshi, C. ^[4]; Albert, F. ^[2]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). NIF. Photon Sciences; Univ. of Texas, Austin, TX (United States). Dept. of Physics
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). NIF. Photon Sciences
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Univ. of California, Los Angeles, CA (United States). Dept. of Electrical Engineering
Univ. of Texas, Austin, TX (United States). Dept. of Physics; Inst. for Basic Science, Gwangju (Korea, Republic of). Center for Relativistic Laser Science; Gwangju Inst. of Science and Technology (Korea, Republic of). Dept. of Physics and Photon Science

Publication Date:: Tue Mar 12 00:00:00 EDT 2019

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of Rochester, NY (United States); Univ. of California, Los Angeles, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE Office of Science (SC), High Energy Physics (HEP); USDOE National Nuclear Security Administration (NNSA); LLNL Laboratory Directed Research and Development (LDRD) Program; US Air Force Office of Scientific Research (AFOSR)

OSTI Identifier:: 1515341

Alternate Identifier(s):: OSTI ID: 1525868

Report Number(s):: LLNL-JRNL-753667
Journal ID: ISSN 0034-6748; 940202

Grant/Contract Number:: AC52-07NA27344; SC0017950; SC0010064; NA0002950; FA9550-14-1-0045

Resource Type:: Accepted Manuscript

Journal Name:: Review of Scientific Instruments

Additional Journal Information:: Journal Volume: 90; Journal Issue: 3; Journal ID: ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION; betatrons; particle beams; plasma acceleration; bremsstrahlung; Compton scattering; lasers; gas jet; X-ray spectroscopy

Citation Formats


                    King, P. M., Lemos, N., Shaw, J. L., Milder, A. L., Marsh, K. A., Pak, A., Hegelich, B. M., Michel, P., Moody, J., Joshi, C., and Albert, F. X-ray analysis methods for sources from self-modulated laser wakefield acceleration driven by picosecond lasers.  United States: N. p., 2019. 
Web.  doi:10.1063/1.5082965.

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                    King, P. M., Lemos, N., Shaw, J. L., Milder, A. L., Marsh, K. A., Pak, A., Hegelich, B. M., Michel, P., Moody, J., Joshi, C., & Albert, F. X-ray analysis methods for sources from self-modulated laser wakefield acceleration driven by picosecond lasers.  United States.  https://doi.org/10.1063/1.5082965

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                    King, P. M., Lemos, N., Shaw, J. L., Milder, A. L., Marsh, K. A., Pak, A., Hegelich, B. M., Michel, P., Moody, J., Joshi, C., and Albert, F. Tue .  
"X-ray analysis methods for sources from self-modulated laser wakefield acceleration driven by picosecond lasers".  United States.  https://doi.org/10.1063/1.5082965.  https://www.osti.gov/servlets/purl/1515341.

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@article{osti_1515341,

  title        = {X-ray analysis methods for sources from self-modulated laser wakefield acceleration driven by picosecond lasers},

  author       = {King, P. M. and Lemos, N. and Shaw, J. L. and Milder, A. L. and Marsh, K. A. and Pak, A. and Hegelich, B. M. and Michel, P. and Moody, J. and Joshi, C. and Albert, F.},

  abstractNote = {A versatile set of methods for analyzing x-ray energy spectra and photon flux has been developed for laser plasma accelerator experiments driven by picosecond lasers. Forward fit provides extrapolated broad energy spectrum measurements, while Ross pair and differential average transmission analysis provide directly measured data points using a particular diagnostic. Combining these methods allows the measurement of x-ray energy spectra with improved confidence. We apply the methods to three diagnostics (filter wheel, stacked image plate spectrometer, and step wedge), each sensitive to a different region of x-ray energies (<40 keV, 35–100 keV, and 60–1000 keV, respectively), to characterize the analysis methods using laser-driven bremsstrahlung x-rays. We then apply the methods to measure three x-ray mechanisms, betatron, inverse Compton scattering, and bremsstrahlung, driven by a laser plasma accelerator. The analysis results in the measurement of x-ray energy spectra ranging from 10 keV to 1 MeV with peak flux greater than 1010 photons/keV/Sr. The combined analysis methods provide a robust tool to accurately measure broadband x-ray sources (keV to MeV) driven by laser plasma acceleration with picosecond, kilojoule-class lasers.},

  doi          = {10.1063/1.5082965},

  journal      = {Review of Scientific Instruments},

  number       = 3,

  volume       = 90,

  place        = {United States},

  year         = {Tue Mar 12 00:00:00 EDT 2019},

  month        = {Tue Mar 12 00:00:00 EDT 2019}

}

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Works referencing / citing this record:

X-ray sources using a picosecond laser driven plasma accelerator
journal, August 2019

Lemos, N.; King, P.; Shaw, J. L.
Physics of Plasmas, Vol. 26, Issue 8
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Title: X-ray analysis methods for sources from self-modulated laser wakefield acceleration driven by picosecond lasers

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