PRELIMINARY DESIGN OF THE RF SYSTEMS FOR THE SPIRAL 2 LINAC

In the SPIRAL 2 Linac, a 5 mA, CW, Deuteron beam is accelerated up to 40 MeV, through a normal conducting (NC) RFQ and 26 independent-phase superconducting (SC) quarter wave resonators, working at 88.05 MHz. Tube and solid state amplifiers derived from the standard FM transmitter modules are foreseen while a new digital control system is being designed for the feed-back and feed-forward amplitude and phase control.. The paper presents the power and low level systems for both the NC and SC cavities and results of simulations of the RF system in operating conditions.