Manufacturing method of V-type-channel microchannel plate

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 ...

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.

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