CERN Accelerating science

Article
Title	High Intensity High Energy E-Beam Interacting with a Thin Solid State Target : First Results at AIRIX
Author(s)	Caron, Michel ; Cartier, Frederic ; Collignon, David ; Hourdin, Laurent ; Merle, Eric ; Mouillet, Marc ; Mouton, Olivier ; Noel, Christian ; Paradis, Dominique ; Pichoff, Nicolas ; Pierret, Olivier
Affiliation	(CEA, Pontfaverger-Moronvilliers) ; (CEA/DAM, Bruyères-le-Châtel)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.1982
Subject category	Accelerators and Storage Rings
Abstract	AIRIX is a 2 kA, 20 MeV, 60 ns linear accelerator dedicated to X-ray flash radiography. During a regular running phase, the primary electron beam is accelerated to and focused on a high atomic number target in order to generate X-rays by brembtrahlung mainly. The huge energy density deposited into the material is such that temperature rises up to 15000°K and that clusters and particles are violently ejected from the surface. In that mechanism, the backward emission speed can reach 5 km.s-1 and the debris can gradually accumulate and subsequently contaminate some sensitive parts of the machine. In order to protect the whole accelerating line from the detrimental effect of back-ejected particles, we have investigated the technical feasibility of a thin foil implementation upstream the X-ray converter.