DocumentCode :
1139144
Title :
A High Resolution, High Frame Rate Detector Based on a Microchannel Plate Readout With the Medipix2 Counting CMOS Pixel Chip
Author :
Mikulec, Bettina ; Vallerga, John V. ; McPhate, Jason B. ; Tremsin, Anton S. ; Siegmund, Oswald H W ; Clark, Allan G.
Author_Institution :
Univ. of Geneva, Switzerland
Volume :
52
Issue :
4
fYear :
2005
Firstpage :
1021
Lastpage :
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 \\gg 30 m diameters will require WFS detectors that have large pixel formats (512 \\times 512), low noise (< 3 e^{\\hbox{-}}/ \\hbox{\\\\pixel)} and very high frame rates ( \\sim 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 :
CMOS integrated circuits; adaptive optics; astronomical telescopes; beta-ray detection; gamma-ray detection; mirrors; nuclear electronics; position sensitive particle detectors; readout electronics; wavefront sensors; Medipix2 counting CMOS pixel chip; UV photons; adaptive optics; anode; beta particles; deformable mirrors; ground-based optical astronomy; high resolution high frame rate detector; high resolution imaging; microchannel plate readout; optical phase error; photon counting; very large telescopes; wavefront sensors; Adaptive optics; Astronomy; Atmosphere; CMOS image sensors; Detectors; High-resolution imaging; Microchannel; Optical noise; Optical sensors; Telescopes; Adaptive optics; CMOS pixel chip; high frame rate; microchannel plate detector; photon counting; wavefront sensor;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/TNS.2005.852694
Filename :
1495799
Link To Document :
بازگشت