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Scatter screen type electronic beam radiator

A technology of electron beam irradiation and scattering screen, which is applied in the field of radiation processing, can solve the problems of complex shape, large volume, unfavorable irradiation accelerator miniaturization and self-shielding design, and achieve the effect of extending shelf life and fresh shelf life

Inactive Publication Date: 2004-07-14
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this traditional scan box external ion pump mode is that it is large in size and complex in shape, which is not conducive to the miniaturization and self-shielding design of the radiation accelerator.

Method used

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  • Scatter screen type electronic beam radiator
  • Scatter screen type electronic beam radiator
  • Scatter screen type electronic beam radiator

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Embodiment Construction

[0015] see Figure 1-Figure 3 , a scattering screen type electron beam irradiation device, which includes an electron linear accelerator 1 and a light limiting cylinder 13. The overall shape of the light limiting cylinder 13 is square, and a flange 3 connected with the accelerator 1 is arranged in the middle of the upper cover 4 of the light limiting cylinder 13 . The bottom in the middle of the flange 3 is connected with a water-cooled double-layer titanium window assembly 2 corresponding to the drift tube 12 of the accelerator 1 . On the bottom plane of the flange 3 are connected four support rods 9 uniformly distributed along the set circumference. Two layers of support plates 10 are supported by each support rod 9 , and a thin metal scattering sheet 11 is provided in the middle of each support plate 10 . The thickness of each thin metal scattering sheet 11 is 10 μm-30 μm, and its material is tungsten or tantalum with high melting point. Each thin metal scattering sheet ...

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Abstract

The scattering screen type electronic beam radiator belongs to the field of radiation processing technology. The electronic beam radiator includes electronic linear accelerator and light limiting tube. Structurally, it features the light limiting tube with flange connected to electronic linear accelerator in the middle of the top cover and water cooled double-layered titanium window assembly corresponding to the drift tube of the accelerator and embedded to the bottom of the flange. There are two layers of support board on the bottom of the flange and thin scattering metal sheets set inside the support boards. The light limiting tube has cooling water space formed by the double-layered walls and may be filled with cooling gas. The water cooled double-layered titanium window assembly is one cooling water space formed by the water cooling box cover and water cooling box bottom. Compared with available technology, the present invention has the advantages of simple structure, self shielding, high efficiency, etc.

Description

technical field [0001] The invention relates to the technical field of radiation processing, in particular to a scanning device using an electron linear accelerator as a radiation source. Background technique [0002] Electron beam irradiation treatment technology is a treatment technology that uses the ionization ability and bremsstrahlung effect of electron beams to cause certain biological and physical effects on the irradiated items, thereby performing sterilization and deworming or changing the physical properties of the items. In the prior art, accelerators are generally used to generate electron beams with a certain energy, and these accelerators include: traveling wave or standing wave electron linear accelerators, DC high voltage accelerators, high frequency high voltage accelerators, and the like. Small-scale electron beam irradiation accelerators generally use electron linear accelerators to accelerate electrons. The accelerated electrons are scanned and drifted b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21K5/00G21K5/02H05H9/00
Inventor 张化一唐华平李泉风
Owner TSINGHUA UNIV
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