RF TESTING OF THE TRASCO SUPERCONDUCTING REENTRANT CAVITY FOR HIGH INTENSITY PROTON BEAMS

A superconducting reentrant cavity for low beta, high intensity proton beams has been designed, built and tested at LNL after chemical polishing at CERN. This single gap resonator is a prototype for the low beta section of the TRASCO 30 mA proton linac, designed aiming at full beam transmission even in case of failure of one resonator. Rf performance, multipacting and mechanical response of the cavity in the first low power tests will be reported.