Resonant Laser Cooling of Circular Accelerator Beams
Abstract
The resonant laser cooling of circular accelerator beams of relativistic charged particle is studied. It is shown that in the approximation of the given external electromagnetic wave amplitude (small gain free electron laser) the emittance of a beam of charged particles decreases. In the field of particle energy about 100 in the mass energy units the beam energy losses are negligible. The discovered effect can be used for cooling of charged particle beams in various accelerators. The significant cooling rates are possible to achieve by placing of the cooling device in the appropriate points of the accelerator orbit. Resonant laser cooling for various cases are considered. This method of charged particle beams cooling can be applied to circular accelerators of electron and various relativistic heavy particle beams and has significantly, about 3-4 orders of magnitude, shorter cooling time in comparison to any other cooling method.
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