Measuring the angular dependence of betatron x-ray spectra in a laser-wakefield accelerator

Albert, F.; Pollock, B. B.; Shaw, J. L.; Marsh, K. A.; Ralph, J. E.; Chen, Y. -H.; Alessi, D.; Pak, A.; Clayton, C. E.; Glenzer, S. H.; Joshi, C.

doi:10.1088/0741-3335/56/8/084016

Measuring the angular dependence of betatron x-ray spectra in a laser-wakefield accelerator

Journal Article · Tue Jul 22 04:00:00 EDT 2014 · Plasma Physics and Controlled Fusion

DOI:https://doi.org/10.1088/0741-3335/56/8/084016· OSTI ID:1179411

Albert, F. ^[1]; Pollock, B. B. ^[1]; Shaw, J. L. ^[2]; Marsh, K. A. ^[2]; Ralph, J. E. ^[1]; Chen, Y. -H. ^[1]; Alessi, D. ^[1]; Pak, A. ^[1]; Clayton, C. E. ^[2]; Glenzer, S. H. ^[3]; Joshi, C. ^[2]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Univ. of California, Los Angeles, CA (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)

This paper presents a new technique to measure the angular dependence of betatron x-ray spectra in a laser-wakefield accelerator. Measurements are performed with a stacked image plates spectrometer, capable of detecting broadband x-ray radiation up to 1 MeV. It can provide measurements of the betatron x-ray spectrum at any angle of observation (within a 40 mrad cone) and of the beam profile. A detailed description of our data analysis is given, along with comparison for several shots. As a result, these measurements provide useful information on the dynamics of the electrons are they are accelerated and wiggled by the wakefield.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC52-07NA27344

OSTI ID:: 1179411

Report Number(s):: LLNL-JRNL--666252

Journal Information:: Plasma Physics and Controlled Fusion, Journal Name: Plasma Physics and Controlled Fusion Journal Issue: 8 Vol. 56; ISSN 0741-3335

Publisher:: IOP Science

Country of Publication:: United States

Language:: English

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