Device for preparing spherical solid-core microchannel plate

Abstract

The invention relates to a device for preparing a spherical solid-core microchannel plate, and belongs to the device related in the technical fields of detection of gamma rays, X rays, cosmic rays, ultraviolet rays and charged particles. The device aims to solve the technical problems of providing the device for preparing the spherical solid-core microchannel plate. The device solves the technical scheme that: the device consists of a transmission mechanism and a vacuum heating device, wherein the transmission mechanism is positioned on the upper part of the whole device; and the vacuum heating device is arranged on the lower part of the whole device. In the device, one surface of a plane solid-core microchannel plate is contacted with a clamping fixture in the process of preparation by clamping the edge of the plane solid-core microchannel plate. The device ensures that both surfaces of the prepared spherical solid-core microchannel plate are parallel and have the same radius of curvature, and avoids the edge wrinkling; the device is completed in a vacuum system in the whole process of preparation so as to avoid oxidation on the surfaces; and the device improves quality and yield of the spherical solid-core microchannel plate.

Description

technical field [0001] The invention belongs to the technical field of detection of X-rays, gamma rays, cosmic rays, ultraviolet rays and charged particles, and relates to a preparation device for a spherical solid-core microchannel plate. Background technique [0002] A planar microchannel plate is a two-dimensional continuous electron multiplication electric vacuum device, which is composed of many channels with continuous electron multiplication capabilities arranged in a certain geometric pattern. Applying a certain voltage to its two ends can obtain high electronic gain, and multiply and amplify the extremely weak two-dimensional electronic image. [0003] Microchannel plates can be used to detect optical radiation from near-infrared to hard X-ray bands, and can also be used to detect electrons, ions, alpha particles, gamma rays, and cosmic rays. At present, microchannel plates are mainly used in the fields of photon counting imaging detection and low-light night visio...

AI Technical Summary

Problems solved by technology

[0006] The main defects of the above-mentioned device for preparing spherical solid-core microchannel plates: First, the vent hole 6 of the lower mold is located in the axial direction of the edge of the concave spherical cylindrical lower mold 2, and the edge part of the plane solid microchannel plate 3 during the preparation process The pre-bending of the lower mold causes the vent holes 6 to be blocked, and the gas between the concave spherical cylindrical lower mold 2 and the flat solid microchannel plate 3 cannot be eliminated, so that the surface of the prepared spherical solid microchannel plate has Protrusions or air bubbles; the second is that the spherical surface of the convex spherical cylindrical upper mold 4 has only one point in contact with the flat solid core microchannel plate 3, and the spherical surface of the convex spherical cylindrical upper mold 4 and the concave spherical cylindrical lower mold 2 cannot be guaranteed. The spherical surfaces are completely parallel, causing the two surfaces of the prepared spherical solid microchannel plate to be non-parallel, and the radii of curvature are different; the third is to cause wrinkles to appear on the annular plane edge of the prepared spherical solid microchannel plate 3

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