Abstract and subjects
This paper describes the current status of the newly commissioned C-band Engineering Test Facility in New Mexico (CERF-NM) at Los Alamos National Laboratory (LANL). At LANL, we designed and assembled a new test stand with the goal to conduct high gradient breakdown studies at C-band frequencies (5.712 GHz). The test stand is powered by a 50 MW, 5.712 GHz Canon klystron. It is capable of conditioning single cell accelerating cavities for operation at surface electric fields in excess of 300 MV/m. The first two C-band cavities have just undergone the high power testing and operation at high gradients was demonstrated. Probabilities of breakdown were measured as functions of the peak surface fields. Currently the high gradient cavities are operated at room temperature, but we consider adding a capability for cryogenic operation with a cryo-cooler. The test stand is operational and is open to collaborators.