CM2, SECOND 1.3 GHZ CRYOMODULE FABRICATION AT FERMILAB

CM2 is the second 1.3GHz Cryomodule assembled at the Cryomodule Assembly Facility (CAF) in Fermi National Accelerator Laboratory. The string has a corrector coil magnet, a beam position monitor and eight cavities. All cavities are qualified at >= 33 MV/m gradient at the Horizontal Test Facility (HTS) before assembly. The dressed cavities were outfitted with magnetic shielding, blade tuner. The cold mass was assembled based on the Tesla TTF Type III+ cryomodule design. CM2 is currently being installed into the test stand in NML where it will be cooled down and high power tested. CM2 will also be the first cryomodule to be tested with an electron beam at the NML facility. This paper describes the assembly steps, the quality assurance methods and the challenges experienced during assembly and qualification at CAF.