Radiation sources based on Compton interaction that are being developed or operated are often composed of either a LINAC and an optical circulator or a storage ring and a Fabry-Perot optical resonator. A path towards cost and footprint reduction and increased easiness of operation while preserving performances would consist in coupling a normal conducting LINAC to a burst-mode optical Fabry-Perot resonator. This arrangement would thus profit from a high-quality electron beam and a high optical power with optimized performances. This presentation will describe a numerical optimization of a burst-mode Fabry-Perot cavity in this context.
ThomX is a compact Compton based X-ray source under construction at LAL in Orsay (France). The ThomX facility is composed of a 50-70 MeV linac, a transfer line and an 18 meters long storage ring. Compton scattering between 50 MeV, 1 nC electron bunches and 10 mJ laser pulses stacked in a Fabry-Perot cavity results in the production of photons with energies up to 90 keV with a maximum flux of 1013 photons per second. The ThomX building is close to be finished. The installation of the accelerator will start in 2018, followed by the optical table and the Fabry-Perot cavity.
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