Effects of Endspoiling on Microchannel Plate Performance

Microchannel plate (MCP) as a key part of image intensifiers is an electron multiplier device. It consists of several million very thin, conductive glass channels (4–25 micrometers in diameter) fused together. Each channel functions as an independent electron multiplier according to the principle of secondary emission of an electron. During the final stage of manufacturing an MCP, an electrode is evaporated onto the input and output surface of the MCP [1]. During evaporation of the output electrode, the coating penetrates each pore by a depth of about 2 pore diameters which leads to removing the secondary emission characteristic from the end of the MCP pore. Its effect on gain and spatial resolution will be depicted in this paper. As well as the influence of deposited layer thickness on surface resistance.