Vacuum device for controlling high frequency alternating magnetic field of high current electron beam
A high-current electron beam, high-frequency alternating technology, applied in the direction of circuits, discharge tubes, electrical components, etc., can solve the problems of coil damage and inconvenient maintenance, and achieve the effect of avoiding high temperature damage and direct evaporation pollution
Active Publication Date: 2013-07-10
RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
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Problems solved by technology
If a bare coil is used to control the electron beam in a vacuum, the coil will be polluted by steam and baked at high temperature, causing damage to the coil, and it is very inconvenient to maintain in a vacuum. Therefore, it is necessary to design a suitable for high High-frequency alternating magnetic field vacuum device to meet the control requirements of high-current electron beams
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[0016] Below, the vacuum device used to control the high-frequency alternating magnetic field of the high-current electron beam of the present invention will be described in detail in conjunction with the accompanying drawings:
[0017] Such as figure 1 As shown, a vacuum device for controlling high-frequency alternating magnetic fields of high-current electron beams includes an inner tube 1, an outer tube 2 is arranged outside the inner tube 1, and the inside of the inner tube 1 is a vacuum for electron beams 7 Through the passage, a certain gap is formed between the inner tube 1 and the outer tube 2, and circulating cooling water is passed through the gap. In order to make the circulating cooling water evenly distributed, an internal water separator 6 is arranged in the gap to prevent the electron beam from passing through. Excessive temperature causes damage to the inner tube.
[0018] An inner connection interface 4 is respectively provided between the two ends of the inn...
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The invention discloses a vacuum device for controlling a high frequency alternating magnetic field of a high current electron beam. The vacuum device for controlling the high frequency alternating magnetic field of the high current electron beam comprises an inner tube and an outer tube, a certain clearance is formed between the inner tube and the outer tube, circulating cooling water is filled in the clearance, inner connecting interfaces are respectively arranged between two end portions of the inner tube and the outer tube, outer connecting interfaces are respectively arranged outside two ends of the outer tube, inner interface sealing washers are respectively arranged between two end portions of the inner tube and the inner connecting interfaces, outer interface sealing washers are respectively arranged between two end portions of the outer tube and the outer connecting interfaces, and a scanning coil is arranged around the outer tube. An inner water segregator is arranged between the inner tube and the outer tube. The vacuum device for controlling the high frequency alternating magnetic field of the high current electron beam avoids direct evaporation pollution of metal steam, enables high frequency alternating magnetic field not to be restrained, and prevents the inner tube and the outer tube from being damaged by high temperature.
Description
technical field [0001] The invention belongs to a vacuum device for controlling the high-frequency alternating magnetic field of electron beams, in particular to a vacuum device for controlling the high-frequency alternating magnetic field of high-current electron beams. Background technique [0002] Electron gun is a device for generating, accelerating and converging high-energy-density electron beams. Under vacuum conditions, electron beams can be used for high-purity metal smelting, refractory metal melting, evaporation coating, welding and many other industrial applications. The high-current electron beam has ultra-high energy density, and the power density can reach 10 5 Above kilowatts per square centimeter, such a high energy density will increase the vapor pressure on the surface of the material, causing holes and splashes. To realize the effective use of electron beams, it is necessary to perform high-frequency deflection scanning control on the electron beams. The...
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IPC IPC(8): H01J37/30H01J37/305
Inventor 高学林张晓卫范立男王洪强
Owner RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND