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A novel high resolution, high frame rate detector based on a microchannel plate read out with the Medipix2 counting CMOS pixel chip

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6 Author(s)

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 (512×512), 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. First measurement results obtained with this novel detector are presented both for UV photons and beta particles.

Published in:

Nuclear Science Symposium Conference Record, 2004 IEEE  (Volume:7 )

Date of Conference:

16-22 Oct. 2004