The invention discloses a double-modulator
control system of a medical
electron linear accelerator. The double-modulator
control system comprises a magnetron modulator, a grid-controlled
electron gun modulator, a magnetron, a grid-controlled
electron gun, an accelerating tube, three
microwave detection circuits, a feedback
microwave system, a therapeutic head, an automatic dosage
control system and a
digital signal processing system; the
digital signal processing system is connected with the magnetron modulator and the grid-controlled
electron gun modulator respectively, the magnetron modulator is connected with the magnetron, a
microwave detection circuit is connected between the magnetron and the feedback microwave system, and the other two
microwave detection circuits are connected between the inlet and the outlet of the accelerating tube and the feedback microwave system respectively; and the magnetron modulator, the three
microwave detection circuits and the automatic dosage control system are connected with the
digital signal processing system respectively, and the
electron gun modulator is sequentially connected with the grid-controlled
electron gun, the accelerating tube and the therapeutic head. The double-modulator control system realizes independent control, and can dynamically adjust the emission capacity of the electron gun in real time.