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Focusing electrode for micro-channel plate type photomultiplier and photomultiplier

A technology of photomultiplier tube and microchannel plate, which is applied in the field of focusing electrodes, can solve problems such as gaps and restrictions on rectangular expansion, and achieve the effects of preventing deformation, reducing interference and gaps, and improving radial dimensions

Active Publication Date: 2020-11-03
NORTH NIGHT VISION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a method to further increase the radial dimension of the focusing pole of the microchannel plate type photomultiplier tube to improve the rectangular blade of the self-expanding focusing pole in the prior art. Improvements in its photoelectron collection efficiency

Method used

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  • Focusing electrode for micro-channel plate type photomultiplier and photomultiplier
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  • Focusing electrode for micro-channel plate type photomultiplier and photomultiplier

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Embodiment Construction

[0033] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0034] Aspects of the invention are described in this disclosure with reference to the accompanying drawings, which show a number of illustrated embodiments. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of numerous ways, since the concepts and embodiments disclosed herein are not limited to any implementation. In addition, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

[0035] combine figure 1 The microchannel plate photomultiplier tube shown in the example includes a glass spherical shell 1...

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Abstract

The invention provides a focusing electrode for a micro-channel plate type photomultiplier and a photomultiplier. The focusing electrode is suitable for collecting photoelectrons excited by a photocathode, and is characterized by comprising a fixed pressing mechanism, an expansion blade mechanism, a trigger rod, a trigger part and a tightening ring. In the initial state, metal blades and a supporting plate stand above a focusing electrode base, the bottom of the focusing electrode base provides pre-tightening force through a rotating shaft and a torsional spring, and the focusing electrode base tends to expand outwards and is pressed through the tightening ring. The trigger part is turned over downwards by a certain angle, and after entering the neck of a glass spherical shell, the triggerpart is pressed downwards through compression of the neck to pull the trigger rod to move downwards, constraint on the tightening ring is released, the expansion metal blades can be dispersed throughpretightening force of the torsional spring, and expansion is achieved. According to the invention, the combination of fan-shaped blades with gradually changing sizes and the rectangles at the tops is adopted, so that mutual interference and gaps are reduced in an expansion state, the radial size of the focusing electrode is further increased, the photoelectron collection efficiency is improved,and the time performance is improved.

Description

technical field [0001] The invention relates to the technical field of microchannel plate photomultiplier tubes, in particular to a focusing electrode for microchannel plate photomultiplier tubes. Background technique [0002] The microchannel plate photomultiplier tube (PMT-MCP) is beneficial to the multiplication performance of the microchannel plate for electrons, and converts weak optical signals into electrical signal outputs to realize the detection of weak signals. With the continuous development and improvement of microchannel plate technology, microchannel plate photomultiplier tubes have been widely used in geophysics, high-altitude detection, dark matter detection and other fields. [0003] The traditional microchannel plate photomultiplier tube is mainly composed of a glass spherical shell, a photocathode, a metal focusing electrode, a PMT multiplier, and a lead system (including an anode). For example, in the PMT-MCP structure, a double-alkali photocathode is us...

Claims

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Application Information

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IPC IPC(8): H01J43/06H01J43/24
CPCH01J43/06H01J43/246
Inventor 王志任玲徐海洋王兴超司曙光李臻金睦淳张昊达金真黄之瑶
Owner NORTH NIGHT VISION TECH
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