Laser cooling of electron beams at linear colliders

TL;DR

This paper explores a laser cooling technique for electron beams in linear colliders, achieving ultra-low emittances by collision with focused laser pulses, with potential applications in gamma-gamma colliders.

Contribution

It introduces a novel laser cooling method for electron beams, analyzes its limitations, and proposes a scheme for generating the high laser powers needed.

Findings

Achieves transverse emittances below those of existing methods.

Identifies limitations in laser cooling efficiency and laser power requirements.

Proposes a feasible scheme for laser cooling implementation.

Abstract

A method of electron beam cooling is considered which can be used for linear colliders. The electron beam is cooled during collision with focused powerful laser pulse. The ultimate transverse emittances are much below those achievable by other methods. This method is especially useful for high energy gamma-gamma colliders. In this paper we review and analyse limitations in this method, also discuss a new method of obtaining very high laser powers required for the laser cooling, radiation conditions and finaly present a possible scheme for the laser cooling of electron beams.