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International audienceSPIRAL 2 is a rare isotope accelerator dedicated to the production of highintensity beams (E = 40MeV , I = 5mA). The driver is a linear accelerator (LINAC) thatuses bulk Niobium made quarter wave RF cavities. 19 cryomodules inclose one or two cavitiesrespectively for the low and the high energy sections. To supply the 1300W at 4:2K requiredto cool down the LINAC, a cryogenic system has been set up. The heart of the latter is a 3turbines geared HELIAL®LF (ALAT) cold box that delivers both the liquid helium for thecavities and the 60K Helium gaz for the thermal screens. 19 valve-boxes insure cryogenic uid distribution and management. Key issues like cool down speed or cavity RF frequency stabilityare closely linked to the cryogenic system management. To overcome these issues, modellingand simulation efforts are being undertaken prior to the first cool down trials. In this paper, wepresent a status update of the Spiral 2 cryogenic system and the cool down strategy consideredfor its commissioning

Spiral 2 Cryogenic System for The Superconducting LINAC