High reliability low level RF control system for HIRFL-CSRe

In order to get an RF electric field which has stable amplitude, phase and frequency, the radio frequency low level control system for HIRFL-CSRe has been constructed at Institute of Modern Physics. To ensure the control of stability, reliability and real-time, analogous modules are mainly used. At the same time, digital module is used to coordinate the modules and compensate for non-linear error of some function modules. The system is consisted of three subsystems-phase stabilizing system amplitude control system and frequency tuning system, and mainly uses the technology as PID, RF phase detect, DSP, FPGA and so on. Low-level control system of HIRFL-CSRe has been tested through a long-term stability experiments and high-power experiments, the control accuracy meeting the amplitude accura