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The time-resolved electron beam envelope parameters including sectionaldistribution and position are important and necessary for the study of beamtransmission characteristics in the magnetic field and verifying the magneticfield setup rationality. One kind of high time-resolved beam envelopemeasurement system has developed recently. It is mainly constituted of highframing camera and streak camera. It can obtain 3 panoramic images of the beamand the time continuous information of the given beam cross section at onetime. The recently obtained data has proved that several fast vibration of beamenvelope along the diameter direction occur during the rising edge and thefalling edge of the electron beam. The vibration period is about severalnanoseconds. The effect of magnetic field on the electron beam is also observedand verified. The beam debug experiments have proved that the existing beamtransmission design is reasonable and viable. The beam envelope measurementsystem will establish a good foundation for beam physics research.

Time-resolved measure technique for electron beam envelope basing on synchronous framing and streaking principle