Electron beam deflection scanning device and application method

Abstract

The invention discloses an electron beam deflection scanning device and an application method. The electron beam deflection scanning device comprises: an electron accelerating tube for generating point-shaped electron beams; and a set of secondary electromagnet for scanning the point-shaped electron beams, wherein the set of secondary electromagnet is configured to comprise a magnetic pole, a magnetic yoke and an exciting coil which are matched with one another to form a deflection scanning magnetic field for generating a predetermined waveform; and when the point-shaped electron beams pass through the dipolar magnet, the punctiform electron beam is deflected for a preset angle by the deflection scanning magnetic field, is scanned and unfolded by taking the preset angle as a center to forma strip-shaped electron beam, and enters the atmosphere through the leading-out window. According to the electron beam deflection scanning device and the application method, the functions achieved bytwo sets of devices in original equipment can be achieved through one set of dipolar magnet, the structure is compact, the size is small, and the cost is low.

Description

technical field [0001] The invention relates to an electron beam deflection device used on an electron accelerator. More specifically, the present invention relates to an electron beam deflection scanning device used in an electron accelerator and its application method. Background technique [0002] During the application of electron accelerators, it is often necessary to deflect the electron beam at a certain angle in a certain direction, and then scan and expand for irradiation processing. For example, in order to reduce the height of the entire electron accelerator, it is necessary to move the Place the main part of the accelerator tube and other parts horizontally, and output the electron beam vertically downward from the scanning box. This structural layout will reduce the overall height of the electron accelerator, but at the same time, the electron beam needs to be deflected by 90 degrees during the transmission process, and then The scan unfolds into a ribbon elect...

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Problems solved by technology

[0003] The current technology is to use 90-degree deflection magnets and scanning magnets as two independent devices, and power supply mechanisms that cooperate with the two devices to complete the deflection and scanning of the electron beams, and the original large-angle scanning The magnet cannot be placed between the acceleration tube and the 90-degree deflection magnet, but must be added at the position before entering the scanning box after 90-degree deflection. In addition to its large size and high power supply, it also occupies a space that should have been reduced. The product structure is complex, bulky and costly

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