Abstract
Digital low level radio frequency technology has been adopted in the storage ring of SSRF and a controller based on commercial FPGA and DSP board has been developed and operated successfully which helps SSRF to satisfy its specification with beam high to 300mA. The second generation controller has been fabricated in house and used with 240mA beam current at beginning of this year. The stability of amplitude and phase reaches 0.076% (RMS) and 0.053 degree (RMS) respectively. The recent progress on digital LLRF for FEL will be also reported such as the development activities and test results on the local oscillation generation board and down converter board.
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