First high power pulsed tests of a dressed 325 MHz superconducting single spoke resonator at Fermilab

/ Authors

R. Madrak, J. Branlard, B. Chase, C. Darve, P. Joireman, T. Khabiboulline, A. Mukherjee, T. Nicol, E. Peoples-Evans, D. Peterson

and 11 more authors

Y. Pischalnikov, L. Ristori, W. Schappert, D. Sergatskov, W. Soyars, J. Steimel, I. Terechkine, V. Tupikov, R. Wagner, R. Webber, D. Wildman

/ Abstract

In the recently commissioned superconducting RF cavity test facility at Fermilab (SCTF), a 325 MHz, {beta} = 0.22 superconducting single-spoke resonator (SSR1) has been tested for the first time with its input power coupler. Previously, this cavity had been tested CW with a low power, high Q{sub ext} test coupler; first as a bare cavity in the Fermilab Vertical Test Stand and then fully dressed in the SCTF. For the tests described here, the design input coupler with Q{sub ext} {approx} 10{sup 6} was used. Pulsed power was provided by a Toshiba E3740A 2.5 MW klystron.