Sawtooth wave generation for pre-buncher cavity in ISAC

Two phase-locked loops operating with a reference frequency of 11.667 MHz are used to generate the Fourier components for a sawtooth waveform with a repetition frequency of 11.667 MHz. These frequencies are combined at signal level, amplified and used to power a set of parallel plates inside the pre-buncher cavity up to 600 V/sub p-p/. The resultant sawtooth waveform is feedback regulated by I/Q regulation of its individual Fourier components.