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Title

Noiseless kilohertz-frame-rate imaging detector based on microchannel plates readout with the Medipix2 CMOS pixel chip

Authors
McPhate, Jason
Vallerga, John
Tremsin, Anton
Siegmund, Oswald
Published in Longshore, R. E. Infrared and Photoelectronic Imagers and Detector Devices. San Diego, California (USA) - 31st July 2005 - SPIE Press. 2005, p. 10
Collection SPIE Proceedings; 5881
Abstract A new hybrid imaging detector is described that is being developed for the next generation adaptive optics (AO) wavefront sensors. The detector consists of proximity focused microchannel plates (MCPs) read out by pixelated CMOS application specific integrated circuit (ASIC) chips developed at CERN ("Medipix2"). Each Medipix2 pixel has an amplifier, lower and upper charge discriminators, and a 14-bit counter. The 256×256 array can be read out noiselessly (photon counting) in 286 μs. The Medipix2 is abutable on 3 sides to produce 512× (n *256) pixel devices. The readout can be electronically shuttered down to a temporal window of a few microseconds with an accuracy of 10 ns. Good quantum efficiencies can be achieved from the x-ray (open faced with opaque photocathodes) to the optical (sealed tube with semi-transparent GaAs photocathode).
Keywords Photon countingNoiselessMicrochannel plateMedipixHigh frame rateImagingDetector
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MCPHATE, Jason et al. Noiseless kilohertz-frame-rate imaging detector based on microchannel plates readout with the Medipix2 CMOS pixel chip. In: Longshore, R. E. (Ed.). Infrared and Photoelectronic Imagers and Detector Devices. San Diego, California (USA). [s.l.] : SPIE Press, 2005. p. 10. (SPIE Proceedings; 5881) https://archive-ouverte.unige.ch/unige:38082

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Deposited on : 2014-06-24

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