Two-dimensional Cooling of Ion Beams in Storage Rings by Narrow Broad-Band Laser Beams

摘要

A new scheme for the two-dimensional cooling of ion beams in storage rings issuggested in which ions interact with a counterpropagating broad-band laserbeam. The interaction region in the direction of the ion movement is much lessthen the wavelength of the ion betatron oscillations. The laser beam in theorbit plane has sharp flat edge directed to the ion beam and the width of thelaser beam of the order of the ion beam width. Laser beam radial position isbeing displaced with some velocity at first from inside and then from outsideto the ion beam and decreases both betatron and synchrotron oscillations.