COLLECTIVE EFFECTS IN THE 50 MEV THOMX COMPACT STORAGE RING
(Laborateur de l'Accelerateur Lineaire CNRS-IN2P3)
Aula Divisione Acceleratori (LNF INFN)
Aula Divisione Acceleratori
Via Enrico Fermi, 40
ThomX is a high flux compact X ray source based on Compton back scattering between a relativistic electron beam and an intense laser pulse. To increase the repetition rate, the electron beam is stored in a 50 MeV ring. The main drawback of such a scheme is the low energy of the electrons regarding collective effects and intrabeam scattering. These effects tend to spread or even disrupt the stored bunch and they limit its charge, especially in low energy rings machine where damping plays a negligible role. Thus such collective effects reduce the maximum Xray flux and it is important to investigate them to predict the performance of this type of X-ray source. In addition, Compton back scattering acts on the electron beam by increasing its energy spread. In this presentation I will review the most harmful collective effects acting on the electron beam and discuss the possible remedies.