Stochastic momentum cooling with a notch filter at the HIRFL-CSRm

The stochastic momentum cooling with a notch filter that will be built on HIRFL-CSRm is described and formulated with Fokker-Planck equation. The square of the standard deviation of energy error and the initial cooling time are obtained. This provides a guide to analysis of experimental data and design of the cooling system, e.g.optimization of the system passband and gain, specification of accuracy of the signal's transmission, etc．