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Journal of Instrumentation 7 (2012) P01017
Non-planar four-mirror optical cavity for high intensity gamma ray flux production by pulsed laser beam Compton scattering off GeV-electrons
J. Bonis1, R. Chiche1, R. Cizeron1, M. Cohen1, E. Cormier2, P. Cornebise1, N. Delerue1, R. Flaminio3, D. Jehanno1, F. Labaye1, M. Lacroix1, R. Marie1, B. Mercier1, Y. Peinaud1, L. Pinard3, C. Prevost1, V. Soskov1, A. Variola1, F. Zomer1

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.
1 :  LAL - Laboratoire de l'Accélérateur Linéaire
2 :  CELIA - Centre d'Etudes Lasers Intenses et Applications
3 :  LMA - Laboratoire des matériaux avancés
Physique/Physique/Physique des accélérateurs

Physique/Physique/Instrumentations et Détecteurs
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