WANG Cunli1, 2 ZHAO Yubin1 ZHANG Wenzhi1 1. DDS signal acquisition and PI feedback algorithm design based on FPGA for RF system of the synchrotron for proton therapy[J]. Nuclear techniques, 2012, 35(3): 236-240.
WANG Cunli1, 2 ZHAO Yubin1 ZHANG Wenzhi1 1. DDS signal acquisition and PI feedback algorithm design based on FPGA for RF system of the synchrotron for proton therapy[J]. Nuclear techniques, 2012, 35(3): 236-240.DOI:
we report the configuration of frequency sweeping mode and PI feedback control in the low-level RF system of the proton synchrotron for proton therapy.Altera Stratix II FPGA and AD9858 are adopted to get the direct digital synthesizer(DDS) signal of frequency sweeping mode by compiling Verilog HDL code.A PI feedback algorithm is designed to control the amplitude and phase of cavity voltage