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Multi-suspension gate cathode structure, electron gun, electron accelerator and irradiation device

A cathode structure and suspended grid technology, which is applied in cathode ray tubes/electron beam tubes, electrode devices and related components, circuits, etc., can solve the problems of poor beam quality, increased beam emittance, and difficulty in accelerator applications, etc. problem, to achieve the effect of good beam quality

Active Publication Date: 2021-07-30
SHAANXI LIYOU BAIHUI TECH DEV CO LTD
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Problems solved by technology

[0004] However, if image 3 and Figure 4 As shown, the structure of the suspended grid cathode in the related art makes the electron beams emitted by the cathode 10 form each beam subgroup 101 of the total beam cluster have a divergence angle when leaving the suspended grid 30, so that the emissivity of the overall beam becomes larger , or the deterioration of the beam quality, which also makes it difficult to achieve more demanding accelerator applications such as medical and military

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  • Multi-suspension gate cathode structure, electron gun, electron accelerator and irradiation device
  • Multi-suspension gate cathode structure, electron gun, electron accelerator and irradiation device
  • Multi-suspension gate cathode structure, electron gun, electron accelerator and irradiation device

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Embodiment Construction

[0031] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0032] Furthermore, the drawings are merely schematic illustrations of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities.

[0033] Emittance is a physical quantit...

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Abstract

The invention relates to a multi-suspended grid cathode structure, an electron gun, an electron accelerator and an irradiation device. The multi-suspended grid cathode structure includes: a cathode for emitting electron beams; a suppression emission grid located on one side of the cathode emission surface; a first suspended grid located on a side of the emission suppression grid away from the cathode body, The edge of the first suspension grid is provided with a first suspension grid cathode, and a first suspension grid anode arranged opposite to the first suspension grid cathode at intervals, and the first suspension grid anode is connected to an external first bias power supply; The second suspension grid is located on the side of the first suspension grid away from the emission suppression grid. The edge of the second suspension grid is provided with a second suspension grid cathode, and a second suspension grid cathode is arranged opposite to the second suspension grid cathode. The second floating gate anode is connected to an external second bias power supply.

Description

technical field [0001] The present disclosure relates to the technical field of electron accelerators, in particular to a multi-suspension grid cathode structure, an electron gun, an electron accelerator and an irradiation device. Background technique [0002] With the development of science and technology, the application fields of electron accelerators are becoming more and more extensive. Electron linear accelerator is the most widely used accelerator. It is widely used in tumor treatment, polymer crosslinking, disinfection of medical supplies, flaw detection of castings, food preservation, customs inspection, sterilization and insecticide, isotope production, scientific research and laser weapons etc. Conventional electron linear accelerators such as figure 1 As shown, it is mainly composed of DC section, bunching section and acceleration section. Since the acceleration section can only accelerate the micro-pulse electron beam composed of discrete bunches, the lower-e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J29/48H05H7/00
CPCH01J29/485H01J29/488H05H7/001H01J29/48H05H7/00
Inventor 畅祥云
Owner SHAANXI LIYOU BAIHUI TECH DEV CO LTD
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