Speaker
Ms
Samadrita Roychowdhury
(Duke University)
Description
We propose the scheme of a polarized positron source for the International Linear
Collider (ILC). The process is based on a well-known principle of electron-positron
pair creation from polarized gamma rays produced by Compton scattering of the
circularly polarized laser light off a high-energy electron beam (e-beam). Our
system employs multiple interactions of a 6GeV e-beam produced by a linac with CO2
laser beams circulating inside the cavity of a regenerative laser amplifier. Ten
laser/e-beam interaction points are sufficient to generate the required intensity
of the polarized positrons of the order of 1014/sec. Each component in the proposed
system relies on technologies that were demonstrated previously. The presentation
will cover proposed laser system as well as electron beam accelerator.
Primary author
Dr
Vitaly yakimenko
(BNL)
