Séminaire: Developments of optical resonators and optical circulators for high X/gamma ray flux applications

par M. Aurélien MARTENS (LAL-Orsay)

vendredi 21 févr. 2014, 14:30 → 15:30 Europe/Paris

Amphi Recherche (Dept.Phys.)

Towards the design of a future linear collider, polarized positron sources are of major importance. One of the envisaged solutions is to produce circularly polarized photons with a very high flux by means of high power laser Compton backscattering off GeV electrons. This solution requires typically a MW of laser power stored in several successive optical resonators. Towards this goal a long R&D program has been settled at LAL. Recent results obtained with the MightyLaser experiment, installed at KEK (Tsukuba, Japan), will be presented along with the perspectives for an improved system. This R&D program has repercussions on lower energy applications. The construction of the ThomX project at LAL, for which several hundreds of kW are expected to be stored in an optical resonator, is a X-ray imaging application. The ELI-NP gamma source, exploiting an alternative to high power cavities and consisting of optical circulators, will be discussed as a nuclear physics application.

Slides Seminaire-Martens.pdf