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

Jason McPhate; John Vallerga; Anton Tremsin; Oswald Siegmund; Bettina Mikulec; Allan Clark

doi:10.1117/12.618861

7 September 2005 Noiseless kilohertz-frame-rate imaging detector based on microchannel plates readout with the Medipix2 CMOS pixel chip

Jason McPhate, John Vallerga, Anton Tremsin, Oswald Siegmund, Bettina Mikulec, Allan Clark

Author Affiliations +

Proceedings Volume 5881, Infrared and Photoelectronic Imagers and Detector Devices; 58810D (2005) https://doi.org/10.1117/12.618861
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

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).

Citation Download Citation

Jason McPhate, John Vallerga, Anton Tremsin, Oswald Siegmund, Bettina Mikulec, and Allan Clark "Noiseless kilohertz-frame-rate imaging detector based on microchannel plates readout with the Medipix2 CMOS pixel chip", Proc. SPIE 5881, Infrared and Photoelectronic Imagers and Detector Devices, 58810D (7 September 2005); https://doi.org/10.1117/12.618861

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