Performance of the e2v 1.2 GPix cryogenic camera for the J-PAS 2.5m survey telescope
| Autor: | N. Puttay, M. Smith, Patrick Wheeler, K. Taylor, Mark Stanford Robbins, S. Eames, J. Worley, A. Bates, Ryan C. Renshaw, M. Dryer, J. Mortimer, B. Lane, J. Tearle, P. Weston, M. Bastable, G. Fenemore-Jones, I. Palmer, G. Haddow, A. Marin-Franch, Paul Jorden |
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| Rok vydání: | 2016 |
| Předmět: |
Cryostat
Physics 010308 nuclear & particles physics business.industry Flatness (systems theory) media_common.quotation_subject 01 natural sciences Noise (electronics) 030218 nuclear medicine & medical imaging law.invention Telescope 03 medical and health sciences 0302 clinical medicine Optics Cardinal point law Sky 0103 physical sciences Water cooling Electronics business Remote sensing media_common |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| DOI: | 10.1117/12.2234626 |
| Popis: | The J-PAS project will perform a five-year survey of the northern sky from a new 2.5m telescope in Teruel, Spain. In this paper the build and factory testing of the commercially supplied cryogenic camera is described. The 1.2 Giga-pixel focal plane is contained within a novel liquid-nitrogen cooled vacuum cryostat, which maintains the flatness for the cooled, 0.45m diameter focal plane to better than 27 μm peak to valley. The cooling system controls the focal plane to a temperature of -100°C with a variation across the focal plane of better than 2.5oC and a stability of better than +/- 0.5 °C over the long periods of operation required. The proximity drive electronics achieves total system level noise performance better than 5 e- from the 224-channel CCD system. |
| Databáze: | OpenAIRE |
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