Vacuum high-frequency chopping device for synchrotron radiation light source

The invention discloses a vacuum high-frequency chopping device for a synchrotron radiation light source. The vacuum high-frequency chopping device comprises a vacuum cavity, a diaphragm assembly, a displacement platform, a chopping plate assembly and an infrared sensor, a light beam of a synchrotron radiation light source is propagated in the direction of a light path; a continuous optical signal is focused through the square diaphragm, and then the continuous optical signal is cut into a pulse optical signal through the light transmitting port of the chopper plate, and the pulse optical signal is received by the receiver. In order to obtain the frequency of the pulse light signal, an infrared sensor is arranged on the displacement platform, and the transmitting end and the receiving end of the infrared sensor are located on the front face and the back face of the disc face of the chopper plate respectively. A continuous infrared light signal transmitted by a transmitting end is converted into a pulse electr