Transverse Cooling in SSC Magnets

Abstract

A new and more efficient cooling method for SSC magnets is presented. The simple cooling-by-diffusion scheme provides adequate cooling only when the synchrotron radiation heat is limited to S_r = 2 W. The mass flow that can pass through the coil passage cannot be increased without an unduly high pressure drop along the magnet. The transverse flow cooling described here allows for large increases in the heat load. This scheme lets cold helium from the upper bypass mix with the lower bypass helium at intervals of 30 cm for instance. This is achieved by introducing channels in the yoke laminations at given intervals using existing gaps between collar packs and using pickup notches in the collars.

This work is supported by the U.S. Department of Energy.