Cavity material, fabrication, treatment and testing: new concepts and new benefits.
Scope:This Working Group should address the recent results and trends in cavity design, cavity material (Nb, large grain, single crystal, thin films, HTC material) and cavity surface treatments, and their expected benefits. Possible topics are : DESY large grain cavities, SPIRAL2 cavity materials and fabrication; Spoke cavity fabrication and applications (low-beta, beta=1); VEP facilities and experience; Thin films and/or thin film cavities; SRF R&D program for the future.”