A microchannel plate fixing device

Abstract

The application provides a microchannel plate fixing device, which includes an annular base, a collector stacked on the base, a second elastic pressure ring, an insulating plate, a microchannel plate base, an insulating positioning ring, a microchannel plate, The arc positioning ring, the first elastic pressure ring, the second elastic pressure ring and the base clamp the collector to realize the positioning of the upper surface, side surface and lower surface of the collector; the arc positioning The ring, the insulating positioning ring and the micro-channel plate base clamp the micro-channel plate to realize the positioning of the upper surface, the side surface and the lower surface of the micro-channel plate. A fixing device for a microchannel channel plate of the present application can perform shock absorption and fixation on the microchannel plate to ensure that the two sides of the microchannel plate are evenly stressed, and the elastic pressure ring has a certain elastic buffer capacity. Accurate control of the pressing force required for fixing the microchannel plate can be achieved.

Description

technical field [0001] The present application relates to the field of photoelectric detection, and more particularly, to a microchannel plate fixing device. Background technique [0002] A microchannel plate is a channel array composed of several millions or even tens of millions of parallel arranged 4-12μm channel apertures and 6-15μm hole spacing glass channels, and then beveled at a certain angle to form a thickness. The glass flakes of the order of 0.25-0.80 mm are coated with conductive films on both sides of the microchannel plate, and the porous structure is extremely fragile. Detectors based on microchannel plates work under negative high voltage conditions, and slight damage to the surface of the device may cause high voltage discharge, making the detector unusable. [0003] The existing microchannel plate fixing device generally adopts elastic elements to fix the microchannel plate. The patent application number is 201720100511.X. Although the L-shaped spring pre...

AI Technical Summary

Problems solved by technology

Detectors based on microchannel plates work under negative high voltage conditions, and slight damage to the surface of the device may cause high-voltage discharges, making the detector unusable

[0003] The existing micro-channel plate fixing device generally uses elastic elements to fix the micro-channel plate. The patent application number is 201720100511. The pressure generated by the pressure ring is reduced, which improves the yield to a certain extent, but does not fundamentally solve the problem of micro-channel plate assembly

[0004] The patent with the application number 201610335825.8 and the patent with the application number 201610335825.8 use springs and buffer blocks to fix the micro-channel plate. Although the problem of shock absorption is considered, there are problems such as uneven force on the device, and the local pressure of the micro-channel plate may be too large

The use of rubber cannot be used in sealed detectors, which limits the application of micro-channel plates

[0005] The patent application number is 201810092982.X. The micro-channel plate and the collector are fixed by placing a spring in the middle of the back. The mechanical requirements of the components limit the application of microchannel plates

[0006] The application number is 201020634403.9. Rubber is used for shock absorption. The problem of rubber outgassing affects the vacuum degree, which limits the use of micro-channel plates.

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