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Manufacturing method of V-type-channel microchannel plate

A technology of microchannel plate and manufacturing method, which is applied in the manufacture of discharge tubes/lamps, cold cathodes, and electrode systems, and can solve problems such as loss of gain, contact surface damage, and reduction of gain amplification coupling efficiency

Active Publication Date: 2016-11-23
NORTH NIGHT VISION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although this method of stacking two MCPs can increase the gain of the MCP, it will be used when two MCPs are stacked together (see figure 2 ), each piece of MCP has an input electrode 2 and an output electrode 3, so when electrons collide with the electrode positions of the output end of the first-stage MCP channel and the input end of the second-stage MCP channel, there will be no secondary electron multiplication effect, Moreover, the channel electrode will also absorb some electrons, which will lose the gain that should be achieved by cascading two MCPs, that is, reducing the coupling efficiency of gain amplification when MCPs are stacked.
In addition, during the installation and use of MCP, when two pieces of MCP are stacked together, in order to ensure good contact between the two pieces of MCP, a certain pressure needs to be applied between the two pieces, which will cause friction on the contact surface of the two pieces of MCP. damage, resulting in the generation of emission points and bright spots, resulting in the scrapping of the produced low-light image intensifier or photomultiplier tube
In order to further improve the electronic gain of MCP and solve the problem of product scrap due to the stacking of MCP, it is necessary to seek a new way in the manufacture of microchannel plates.

Method used

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  • Manufacturing method of V-type-channel microchannel plate
  • Manufacturing method of V-type-channel microchannel plate
  • Manufacturing method of V-type-channel microchannel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, taking the outer diameter of the MCP whiteboard as F25mm, the channel aperture as 8 μm, the bevel angle as 6 °, and the thickness as an example of the thermal bonding process operation steps of the V-channel microchannel plate production: other steps are the same, so The difference is that in step c, the first piece of MCP whiteboard is put into the sunken table of the graphite base 5, the depth X of the sunken table is 0.6 mm, and the diameter is Φ25.1 mm; in step f, the graphite sheet A stainless steel load 7 weighing 20 g is lightly placed on the upper surface of 6; in step g, the temperature control process is to raise the temperature of the vacuum furnace to 512° C. within 1 hour.

Embodiment 2

[0027] Embodiment 2, taking the outer diameter of the MCP whiteboard as F33mm, the channel aperture as F10μm, the bevel angle as 6°, and the thickness as the V-shaped channel microchannel plate as an example. The operation steps of the thermal bonding process: other steps are the same, so The difference is that in step c, the first piece of MCP whiteboard is put into the sunken table of the graphite base 5, the depth X of the sunken table is 0.8 mm, and the diameter is Φ33.1 mm; in step f, the graphite sheet A stainless steel load 7 weighing 45g is lightly placed on the upper surface of 6; in step g, the temperature control process is to raise the temperature of the vacuum furnace to 515° C. within 1 hour.

Embodiment 3

[0028] Embodiment three, take the outer diameter of MCP whiteboard as Φ20mm, the channel aperture as F6mm, the bevel angle as 6°, and the thermal bonding process operation steps of the production of V-shaped channel microchannel plate as example: other steps are the same, so The difference is that in step c, the first piece of MCP whiteboard is put into the sunken table top of graphite base 5, with a diameter of Φ20.1 mm; in step f, a weight of 8g of stainless steel load 7; in step g, the temperature control process is to raise the temperature of the vacuum furnace to 510° C. within 1 hour.

[0029] Except for the three embodiments above, the present invention is also used for thermal bonding of MCP whiteboards of various other specifications and models to produce V-shaped channel microchannel plates required for low-light image intensifiers and photomultiplier tubes, all of which can satisfy The demand for the product it belongs to.

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Abstract

The invention discloses a manufacturing method of a V-type-channel microchannel plate. The manufacturing method is mainly used for manufacturing the high-gain V-type-channel microchannel plate. The manufacturing method is characterized in that a thermal adhesion bonding process for manufacturing the high-gain V-type-channel microchannel plate comprises the operation steps of: a, cleaning clamps; b, checking and cleaning whiteboards; c, installing the first piece of whiteboard; d, installing the second piece of whiteboard; e, placing a graphite flake; f, placing a load; g, carrying out vacuum heating; h, filling nitrogen and taking the clamps out; i, and performing inspection. The application proves that the manufactured V-type-channel microchannel plate can be directly applied to the product, the phenomena that the gain is low and the product is liable to scrap when original microchannel plates are stacked for use are overcame fundamentally, and the performance quality of the microchannel plate in use is effectively improved and guaranteed, and the technical requirements of the products are satisfied.

Description

technical field [0001] The invention relates to a method for manufacturing a microchannel plate, in particular to a method for manufacturing a high-gain V-shaped channel microchannel plate. Background technique [0002] As an electron multiplier, a microchannel plate (MCP for short) is widely used in low-light image intensifiers and photomultiplier tubes (see figure 1 ), the production process of MCP1: wire drawing, put the glass core material into the glass skin material to form a tube rod, pull out the fiber monofilament and multifilament on the equipment and the mold successively; arrange the screen, put the multifilament into the mold, and discharge Hexagonal multifilament rod; melting and pressing, put the multifilament rod into the melting and pressing mold, and then put the melting and pressing mold into the melting and pressing furnace. Vacuum, at the same time, raise the temperature of the melting furnace to the softening point of the multifilament rod glass, keep ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/00
Inventor 李晓峰孙建宁张勤东张诗鲲冯辉孙赛林杨文波李浩雷
Owner NORTH NIGHT VISION TECH
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