EXPERIMENTAL STRATEGY FOR REALIZATION OF 3-D BEAM ORDERING WITH USE OF TAPERED COOLING AT S-LSR *

Experimental plan at S-LSR to realize ordered state with ultra-low temperature by application of laser cooling for 24 Mg + ions with kinetic energy of 35 keV has been surveyed. By normal mode with finite dispersion, 1 dimensional ordering and 2 dimensional zigzag structure of crystalline beam are expected if strong enough laser cooling force is applied with resonant coupling method. Three dimensional crystal is expected to be attained by the dispersion free mode with coupling cavity although limited at 1 layer level. With “tapered cooling” utilizing Wien Filter, multi-layer 3 dimensional crystal state is expected to be realized.