DESIGN OF NEW COMPACT COOLER RING FOR CRYSTALLINE BEAMS

The compact ion cooler ring project (LSR) has been started in Kyoto University from 2001. LSR will have an electron cooler and a laser cooling system. The circumference is 20.997 m and the maximum magnetic rigidity is 1 Tm. One of the research subjects is a realisation of crystalline beams by cooling techniques. LSR has 6 superperiods and satisfies the so-called "maintenance condition", which is necessary for the beam crystal. It can also be operated with the betatron phase advance below 90 degrees per superperiod to avoid the envelope instability. We also plan to test the threedimensional laser cooling in this ring.