Title :
Operating characteristics of sandwich microchannel plates
Author :
Pearson, J.F. ; Lees, J.E. ; Fraser, G.W.
Author_Institution :
Dept. of Phys., Leicester Univ., UK
Abstract :
A sandwich plate is a novel type of high-gain electron multiplier formed by bonding, in permanent contact, three standard (channel length-to-diameter ratio L/D=40:1) image-intensifier multichannel plates. This geometry has the advantage of mechanical and electrical simplicity when compared with conventional multiplate stacks. An evaluation of sandwich plates for X-ray photon counting is presented. Sandwich plate gain, gain uniformity, pulse height FWHM, dark noise, high-count-rate operation, and X-ray quantum efficiency are compared with previous measurements made with conventional two-stage MCP (microchannel plate) multipliers.<>
Keywords :
X-ray detection and measurement; electron multipliers; image intensifiers; photon counting; position sensitive particle detectors; X-ray photon counting; X-ray quantum efficiency; dark noise; gain uniformity; high-count-rate operation; high-gain electron multiplier; image-intensifier multichannel plates; operating characteristics; pulse height FWHM; sandwich microchannel plates; Astronomy; Bonding; Electron multipliers; Geometry; Image intensifiers; Microchannel; Physics; Pulse measurements; Voltage; X-ray imaging;
Journal_Title :
Nuclear Science, IEEE Transactions on
