Performance of small-pore microchannel plates

Oswald H. W. Siegmund; Mark A. Gummin; T. Ravinett; Sharon R. Jelinsky; Michael L. Edgar

doi:10.1117/12.255986

31 October 1996 Performance of small-pore microchannel plates

Oswald H. W. Siegmund, Mark A. Gummin, T. Ravinett, Sharon R. Jelinsky, Michael L. Edgar

Proceedings Volume 2808, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VII; (1996) https://doi.org/10.1117/12.255986
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

Small pore size microchannel plates (MCPs) are needed to satisfy the requirements for future high resolution small and large format detectors for astronomy. MCPs with pore sizes in the range 5 micrometer to 8 micrometer are now being manufactured, but they are of limited availability and are of small size. We have obtained sets of Galileo 8 micrometer and 6.5 micrometer MCPs, and Philips 6 micrometer and 7 micrometer pore MCPs, and compared them to our larger pore MCP Z stacks. We have tested back to back MCP stacks of four of these MCPs and achieved gains greater than 2 multiplied by 10⁷ with pulse height distributions of less than 40 percent FWHM, and background rates of less than 0.3 events sec^-1 cm^-2. Local counting rates up to approximately equals 100 events/pore/sec have been attained with little drop of the MCP gain. The bare MCP quantum efficiencies are somewhat lower than those expected, however. Flat field images are characterized by an absence of MCP fixed pattern noise.

Citation Download Citation

Oswald H. W. Siegmund, Mark A. Gummin, T. Ravinett, Sharon R. Jelinsky, and Michael L. Edgar "Performance of small-pore microchannel plates", Proc. SPIE 2808, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VII, (31 October 1996); https://doi.org/10.1117/12.255986

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