Optical stochastic cooling

In this paper, we consider the utilization of optical amplifiers with bandwidth {Δ}f{}10¹⁴ Hz for use in stochastic cooling. It is shown that quadrupole and dipole wigglers can be used as pickups and kickers, respectively. The proposed method increases the application of the stochastic cooling method beyond the traditional area of proton-antiproton cooling. For example, the method has application to electron-positron cooling as well as potential in muon cooling. The proposed method makes possible the independent choice of damping time and source of excitation of emittance, thereby providing a new direction for the design of low-emittance damping rings.