BEAM COOLING AT S-LSR*

S-LSR is an ion accumulation and cooler ring with the circumference and maximum magnetic rigidity of 22.589 m and 1.0T . m, respectively. Electron beam cooling will be applied for laser-produced hot ion beam after phase rotation. Laser cooling of 24 Mg + ion with low energy (35 keV) is also planned in 3-dimensional way with use of synchro-betatron coupling so as to realize ultra cold beam. Construction of S-LSR is to be completed in this fiscal year and beam commissioning will be started in next spring..