Joint Universities Accelerator School
Superconducting RF Cavities

Dr. Fritz Caspers, Former CERN


1- Surface resistance and field limitations: Multipacting, quenches, field emission


2- Superconducting cavity design: Optimal shape, tuning, field flatness, coupling ports; Lorentz force detuning and instabilities; Fabrication techniques; Measurement techniques


3- Superconducting cavity and its RF system: Coupling to a matched line, external Q; Resonant coupling; Main and HOM couplers; RF power and system stability


4- Typical applications: Electron machines, high field, high current; Low and reduced beta cavities for linacs