Abstract
We are proposing an experiment to test the new idea of enhanced optical cooling (EOC) in an electron storage ring. This experiment will confirm new fundamental processes in beam physics and will demonstrate new unique possibilities with this cooling technique. It will open important applications of EOC in nuclear physics, elementary particle physics, and in light sources based on high brightness electron and ion beams.
Highlights
Emittance and the number of stored particles N in the beam determine the principal parameter of the beam, its brightness can be defined as B N="x "z "s, where each "x;z;s stands for invariant emittance associated with the corresponding coordinate
To cool the electron beam in this case the additional selection of undulator radiation wavelets (URWs) can be used by the screen
If the optical screen opens the way to radiation from the part of the electron beam, so only small angles to the undulator axis # < #C passed through, URWs will be overlapped at the distance from the end of the undulator lc where d is the transverse size of the electron beam
Summary
Emittance and the number of stored particles N in the beam determine the principal parameter of the beam, its brightness can be defined as B N="x "z "s , where each "x;z;s stands for invariant emittance associated with the corresponding coordinate. If the accelerating rf system is switched off, radiation energy losses are neglected, and all particles of the beam are injected in the decelerating phases after the movable screen will open images of particles with minimal energy, the optical system must be switched off Both the spread of closed orbits and amplitudes of betatron oscillations will be decreased and the cooling process can be repeated. In this case the sum of betatron amplitudes and deviations of closed orbits of particles in the cooled beam will be limited by the value xT Another scheme can be used depending on parameters of storage rings, availability of accelerating rf fields in the cooling process, duration of impulses of the laser amplifiers, distances between kicker undulators, delay times for URWs, and so on. EOC in the longitudinal or transverse planes only is possible [4,5]
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