Cyclotron optimization starting method based on pulse closed-loop mode

The invention discloses a cyclotron optimization starting method based on a pulse closed-loop mode. The method is characterized by comprising the steps that initialization preparation work is carried out; entering a low-power tuning state in a pulse closed-loop mode and realizing a tuning closed loop in the low-power tuning state; entering a pulse search state in a pulse closed-loop mode and realizing a tuning closed loop in the pulse search state; entering a power boosting state in a pulse closed-loop mode and realizing an amplitude closed loop in the power boosting state; and entering a normal operation state in a pulse closed-loop mode and realizing cavity pressure balance in the normal operation state. According to the invention, a pre-tuning point + pulse closed-loop mode is adopted, and a pre-tuning point mode is adopted, so that the power input to the cavity can be maximum and the power reflected back by the cavity can be minimum when the pulse search state is entered and the power is increased and whe