Operational performances and future upgrades for the ELETTRA RF system

The ELETTRA RF system has been in operation for 18 months and has demonstrated itself to be very reliable and flexible. Due to the independence of the four plants, the low failure rate did usually not cause interruption of machine operation. The low level control system has been completed in the last year with the installation of the phase loops. For the present operating conditions, i.e. maximum 250 mA at 2 GeV, no need for HOM dampers became evident, since, by accurate temperature tuning of the cavities, dangerous frequencies can be easily avoided. With the present scenario of insertion devices, a current of 400 mA with sufficiently good lifetime may be stored at 2 GeV in the multibunch mode. New upgrades of the system, like a slow phasing loop among the cavities are also discussed.