Application of superconducting cavities to the collider rings of the SSC

The rf parameters of the SSC collider rings are briefly characterized by 20 MV peak rf voltage, 3.9 MeV acceleration per turn, and 2 MW rf power per ring at a multiple of the 60-MHz bunch frequency of the proton beam injector. In combination with a low R/Q-value, the total stored energy in the rf structure could be increased by an order of magnitude. This would help to reduce the undesired effects of transient beam loading, of rf generator noise, and of imperfections in the generator feedforward current, resulting in reduced phase modulation of the particle bunches at the collision area. For 70 mA circulating beam current, eight superconducting single-cell cavities would be required per ring, instead of 32 to 40 single-cell normal conducting cavities. (author) 22 refs.; 3 figs