REPLACEMENT OF MAGNET POWER SUPPLIES, CONTROL AND FIELD-BUS FOR THE PSI CYCLOTRON ACCELERATORS

Magnet power supplies in the PSI accelerator complex with their control and field-bus are old. Some components are more than 30 years old. To facilitate further maintenance and to meet the more demanding specifications for operation with the 2mA beam, they have to be replaced. The switched power supplies, developed for SLS, will be used. This implies a major redesign of part of the accelerator control system, which is currently based on CAMAC, ROAD-C and other in house developed hardware including the machine protection system. The modified control for the new set-up will be based on VME and alternatively CAMAC, with dedicated processors for the functionality of the machine protection system.