Non-planar four-mirror optical cavity for high intensity gamma ray flux production by pulsed laser beam Compton scattering off GeV-electrons

Abstract : As part of the R&D toward the production of high flux of polarised Gamma-rays we have designed and built a non-planar four-mirror optical cavity with a high finesse and operated it at a particle accelerator. We report on the main challenges of such cavity, such as the design of a suitable laser based on fiber technology, the mechanical difficulties of having a high tunability and a high mechanical stability in an accelerator environment and the active stabilization of such cavity by implementing a double feedback loop in a FPGA.
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Submitted on : Thursday, December 1, 2011 - 10:52:24 PM
Last modification on : Thursday, July 26, 2018 - 12:09:35 PM

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J. Bonis, R. Chiche, R. Cizeron, M. Cohen, E. Cormier, et al.. Non-planar four-mirror optical cavity for high intensity gamma ray flux production by pulsed laser beam Compton scattering off GeV-electrons. Journal of Instrumentation, IOP Publishing, 2012, 7, pp.P01017. ⟨10.1088/1748-0221/7/01/P01017⟩. ⟨in2p3-00647384⟩

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