Short-pulse, high-brightness X-ray production with the PLEIADES Thomson-scattering source |
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| Authors: | SG Anderson CPJ Barty SM Betts WJ Brown JK Crane RR Cross DN Fittinghoff DJ Gibson FV Hartemann J Kuba GP LeSage JB Rosenzweig DR Slaughter PT Springer AM Tremaine |
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| Institution: | (1) Lawrence Livermore National Laboratory, 7000 East Ave., 94550 Livermore, CA, USA;(2) UCD Department of Applied Science, 661 Hertz Hall, 94550 Livermore, CA, USA;(3) UCLA Department of Physics and Astronomy, 405 Hilgard Ave., 90095 Los Angeles, CA, USA |
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| Abstract: | PLEIADES is a compact, tunable, high-brightness, ultra-short-pulse, Thomson-scattering X-ray source. Picosecond pulses of hard X-rays (10–200 keV) are created by colliding an ultra-relativistic (20–100 MeV), picosecond-duration electron beam with a high-intensity, sub-picosecond, 800-nm laser pulse. Initial operation of this source has produced 78-keV X-rays with 106 photons per pulse using a 57-MeV, 0.3-nC, 50- m rms width electron beam and a 180-mJ, 15-m rms width laser pulse. The angular distribution, energy, and energy spectrum of the source are found to agree well with theory and simulations. Source optimization is expected to increase X-ray output to between 107 and 108 photons per pulse with a peak brightness approaching 1020 photons/s/0.1% bandwidth/mm2/mrad2. PACS 41.50.+h; 07.85.Fv; 41.75.Ht; 42.62.-b |
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