ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 1997, vol. 78, p. 4757-4760
Laser cooling of electron beams for linear colliders
A novel method of electron beam cooling is considered which can be used for linear colliders. The electron beam is cooled during collision with a focused powerful laser pulse. With reasonable laser parameters (laser Hash energy about 10 J) one can decrease transverse beam emittances by a factor of about 10 per stage. The ultimate transverse emittances are much below those achievable by other methods. Beam depolarization during cooling is about 5%-15% for one stage. This method is especially useful for photon colliders and opens new possibilities for e- e- colliders and x-ray free-electron lasers based on high-energy linacs.