Speaker
Mr
Patrick Marchand
(SOLEIL synchrotron)
Description
The 352 MHz RF accelerating systems for the SOLEIL booster and storage ring are in operation since mid 2006. In the booster, a 5-cell copper cavity of the CERN-LEP type is powered with a 35 kW solid state amplifier. In the storage ring, the required RF accelerating voltage (up to 4.4 MV) and power (560 kW at full beam current of 500 mA) will be provided by two cryomodules, each containing a pair of superconducting cavities, specifically designed for SOLEIL. The parasitic impedances of the high order modes are strongly attenuated by means of four coaxial couplers, located on the tube connecting the two cavities. The first cryomodule is operating on the ring, while the second one, which is under fabrication, should be implemented in August 2008. Both cryomodules are cooled at 4.2 K with liquid helium from a single 350 W liquefier and each cavity is powered by a 190 kW solid state amplifier. Using a single cryomodule and two amplifiers, the first objective of storing 300 mA stable beam was successfully achieved in 2006 and operated routinely in 2007. The operational experience with the different parts of the equipment is reviewed, after more than one year of running.
Author
Mr
Patrick Marchand
(SOLEIL synchrotron)