New Possibilities for Superconducting Cavity Testing at Cornell University

Cornell is testing superconducting cavities for many different purposes: system development for CESR, supporting technology transfer of CESR SRF systems to storage ring light sources around the world, collaboration with the world-wide TESLA project, collaboration with Muon Collider/Neutrino Factory projects, developing an Energy Recovery Linac (ERL) based synchrotron light source in collaboration with TJNAF, and basic cavity R&D in the areas of high Q, high field Q-slope and field emission. For this Cornell has upgraded its preparation and test facilities and now has the capabilities to test s.c cavities with frequencies between 200 MHz and 3 GHz. Three radiationshielded test pits have been built. The largest pit has a size of 2.4 m diameter by 4.4 meter deep. In addition to the existing RF test system at 500 MHz, 1.3 GHz and 1.5 GHz, a 200 MHz low power (2 kW) RF test system has been completed [1]. The high-power 1.3 GHz test system as well as the cavity preparation facility are presently being upgraded to incorporate TESLA 9-cell cavities. A new 1000 sq ft clean room is in operation for improved cavity preparation.