| Article | |
| Report number | CERN-OPEN-2006-062 |
| Title | Noiseless imaging detector for adaptive optics with kHz frame rates |
| Author(s) | Vallerga, J V ; McPhate, J ; Mikulec, Bettina ; Tremsin, A ; Clark, Allan G ; Siegmund, O H W |
| Affiliation | (Space Science Laboratory, University of California, Berkeley) ; (University of Geneva) |
| Corporate Author(s) | CERN. Geneva |
| Collaboration | Medipix Collaboration |
| Publication | 2004 |
| Imprint | 22 Jun 2004 |
| Number of pages | 12 |
| In: | Proc. SPIE 5490 (2004) 1256-1267 |
| In: | Spie's Astronomical Telescopes And Instrumentation 2004 Meeting, Glasgow, UK, 21 - 25 Jun 2004, pp.1256-1267 |
| DOI | 10.1117/12.553017 |
| Subject category | Detectors and Experimental Techniques |
| Abstract | A new hybrid optical detector is described that has many of the attributes desired for the next generation AO wavefront sensors. The detector consists of a proximity focused MCP read out by four multi-pixel application specific integrated circuit (ASIC) chips developed at CERN (âﾜMedipix2â) with individual pixels that amplify, discriminate and count input events. The detector has 512 x 512 pixels, zero readout noise (photon counting) and can be read out at 1 kHz frame rates. The Medipix2 readout chips can be electronically shuttered down to a temporal window of a few microseconds with an accuracy of 10 nanoseconds. When used in a Shack-Hartman style wavefront sensor, it should be able to centroid approximately 5000 spots using 7 x 7 pixel sub-apertures resulting in very linear, off-null error correction terms. The quantum efficiency depends on the optical photocathode chosen for the bandpass of interest. A three year development effort for this detector technology has just been funded as part of the first Adaptive Optics Development Program managed by National Optical Astronomy Observatory. |
Corresponding record in: Inspire
Email contact: [email protected]
Записът е създаден на 2006-10-20, последна промяна на 2018-09-24
