THERMAL PERFORMANCE OF THE S1-GLOBAL CRYOMODULE FOR ILC

The S1-Global program was the international research collaboration among INFN, FNAL, DESY, SLAC and KEK as one of the GDE R&D for construction of ILC. The program was successfully completed in March, 2011. As the thermal studies of this cryomodule, the static heat losses at 2K, 5K and 80K were measured and compared with design. The dynamic losses of the DESY, FNAL and two KEK cavities at their maximum operative gradients were measured. In this paper, we will report the summary of the thermal measurements of the S1-G cryomodule.