Computer Science – Performance
Scientific paper
Oct 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991spie.1549...68s&link_type=abstract
In: EUV, X-ray, and gamma-ray instrumentation for astronomy II; Proceedings of the Meeting, San Diego, CA, July 24-26, 1991 (A93
Computer Science
Performance
1
Imaging Spectrometers, Microchannel Plates, Multi-Anode Microchannel Arrays, Photocathodes, Radiation Detectors, Dynamic Range, Performance Tests, Pixels, Research And Development
Scientific paper
We report on the development of a new high-dynamic-range two-stage Multi-Anode Microchannel Array (MAMA) imaging tube designed for improved high count rate performance at FUV and EUV wavelengths. The new two-stage MAMA tube employs two 25-mm-diameter format MCPs placed in tandem with a small gap between the plates. The front (input) MCP is designed to be a low-gain converter plate that supports an opaque photocathode and converts the detected photons to electrons, while the second (output) MCP is of higher conductivity and thus maintains the overall gain of the multiplier at high count rates. The second MCP is mounted in proximity focus with a (224 x 960)-pixel fine-fine coincidence MAMA array for high-spatial-resolution imaging studies. The applied voltage across each MCP can be controlled independently. We report on the gain and dynamic range performance characteristics of the two-stage MAMA tube in two different configurations: first, with the output MCP having moderate conductivity (about 100 MOhm); and second, with the output MCP having very high conductivity (about 2 MOhm). These results are compared and contrasted with those of the more conventional MAMA tube configuration which employs a single high-gain curved-channel MCP.
Gethyn Timothy J.
Slater David C.
No associations
LandOfFree
High-dynamic-range MCP structures does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with High-dynamic-range MCP structures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-dynamic-range MCP structures will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1877246