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Title

A High Resolution, High Frame Rate Detector Based on a Microchannel Plate Readout With the Medipix2 Counting CMOS Pixel Chip

Authors
Vallerga, John V.
McPhate, Jason B.
Tremsin, Anton S.
Siegmund, Oswald H. W.
Published in IEEE Transactions on Nuclear Science. 2005, vol. 52, no. 4, p. 1021-1026
Abstract The future of ground-based optical astronomy lies with advancements in adaptive optics (AO) to overcome the limitations that the atmosphere places on high resolution imaging. A key technology for AO systems on future very large telescopes are the wavefront sensors (WFS) which detect the optical phase error and send corrections to deformable mirrors. Telescopes with >30 m diameters will require WFS detectors that have large pixel formats (512 x 512), low noise ( < 3 e- /pixel) and very high frame rates ( ~1 kHz). These requirements have led to the idea of a bare CMOS active pixel device (the Medipix2 chip) functioning in counting mode as an anode with noiseless readout for a microchannel plate (MCP) detector and at 1 kHz continuous frame rate. First measurement results obtained with this novel detector are presented both for UV photons and beta particles.
Keywords Adaptive opticsCMOS pixel chipHigh frame rateMicrochannel plate detectorPhoton countingWavefront sensor.
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MIKULEC, Bettina et al. A High Resolution, High Frame Rate Detector Based on a Microchannel Plate Readout With the Medipix2 Counting CMOS Pixel Chip. In: IEEE Transactions on Nuclear Science, 2005, vol. 52, n° 4, p. 1021-1026. https://archive-ouverte.unige.ch/unige:38087

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Deposited on : 2014-06-24

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