Institutional Repositories DataBase (IRDB) · 2004 · 15 citations · 2 references
EngineeringComputer EngineeringComputer SystemsEmbedded SystemsField-programmable Gate ArraysReal-time SystemsAccelerator ArchitectureAccelerator PhysicsControl SystemsDigital Signal ProcessingFeedback ControlReactor InstrumentationAccelerator ControlsAcceleratorsData ProcessingDigital FeedbackDigital Feedback CommunicationDigital Signal Processing BlocksFeedback System DesignLinear Accelerators
At the proton linac of J-PARC (Japan Proton Accelerator Research Complex), an accelerating electric field stability of ±1% in amplitude and ±1° in phase is required for the RF system. In order to accomplish these requirements, a digital feedback system is adopted for flexibility of the feedback (FB) and feedforward (FF) algorism implementation. FPGAs are used for the realtime FB system. A DSP board is also utilized for data processing and communication between FPGAs and a crate control CPU (Host). The system was examined with the SDTL cavity, and satisfied the stability specification.
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