Breakdown Study Based on Direct In-Situ Observation of Inner Surfaces of an RF Accelerating Cavity

We have developed normal-conducting accelerating single-cell cavities with a complete higher-order-mode heavily damped structure, into which we feed a 508.9-MHz continuous wave. During a high-gradient test of the second production version of the cavity, we performed a breakdown study based on direct in situ observation of the inner surfaces of the cavity. This paper presents our experimental findings obtained from this observation.
Back