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Scientific article
English

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

Published inIEEE transactions on nuclear science, vol. 52, no. 4, p. 1021-1026
Publication date2005
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 optics
  • CMOS pixel chip
  • High frame rate
  • Microchannel plate detector
  • Photon counting
  • Wavefront sensor.
Citation (ISO format)
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. doi: 10.1109/TNS.2005.852694
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ISSN of the journal0018-9499
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