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abstract:
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We report on the performance of an S-band RF photocathode electron gun and
accelerator for operation with the PLEIADES Thomson x-ray source at LLNL. Simulations of
beam production, transport, and focus are presented. It is shown that a 1 ps, 500 pC electron
bunch with a normalized emittance of less than 5 Tcmm-mrad can be delivered to the interaction
point. Initial electron measurements are presented. Calculations of expected x-ray flux are also
performed, demonstrating an expected peak spectral brightness of 1020
photons/s/mm2/mrad2/0.1% bandwidth. Effects of RF phase jitter are also presented, and planned
phase measurements and control methods are discussed.
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