TESTS OF THE LOW BETA CAVITIES AND CRYOMODULES FOR THE SPIRAL 2 LINAC

The IRFU institute of CEA Saclay is in charge of the 12 low beta cryomodules that will be installed on the first section of the SPIRAL 2 superconducting LINAC. Each cryomodule houses a single QWR cavity at 88MHz and E=0.07 cooled with liquid helium at 4.4 K. All components of the cryomodules are manufactured by the industry. The power coupler is provided by LPSC Grenoble. The assembling and tests are performed by the CEA. The RF power tests (Pmax = 10 kW) were performed on the qualifying cryomodule at the end of 2008 before launching the order of the 11 serial cryomodules. The two first cavities of the series were tested in vertical cryostat before the summer 2009. A summary of these tests and the present status of this project are reported.