SCUBA-2: A large-format TES array for submillimetre astronomy
| Autor: | David C. Gostick, Xiaofeng Gao, Maureen A. Ellis, Adam Woodcraft, Camelia Dunare, Rashmikant V. Sudiwala, T. Peacocke, Michael D. Audley, Dan Bintley, T. Hodson, Kent D. Irwin, Matthew Joseph Griffin, Peter A. R. Ade, Wayne S. Holland, Fred Gannaway, D. Kelly, I. Smith, M. J. MacIntosh, W. D. Duncan, Pierre Bastien, Joel N. Ullom, David A. Naylor, David Atkinson, M. Fich, Giampaolo Pisano, Mark Halpern, M. Cliffe, George F. Mitchell, H. McGregor, Ian Walker, Anthony J. Walton, Ian Robson, Gene C. Hilton, William Parkes |
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| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
Physics
Nuclear and High Energy Physics business.industry Bolometer Detector Submillimeter detector array Large format Submillimetre astronomy Particle detector law.invention Optics law SQUID multiplexer Astronomical interferometer TES Bolometer array Transition edge sensor business Instrumentation Submillimeter detector array Transition edge sensor TES Bolometer array SQUID multiplexer James Clerk Maxwell Telescope |
| Popis: | SCUBA-2, which replaces the Submillimetre Common User Bolometer Array (SCUBA) (Mon. Not. R. Astron. Soc. 303 (1999) 659) on the James Clerk Maxwell telescope in 2006, will be the first CCD-like array for submillimeter astronomy. Unlike previous detectors which have used discrete bolometers, SCUBA-2 has two DC-coupled, monolithic, filled arrays with a total of 10,000 bolometers. It will offer simultaneous imaging of an 8A—8 arcmin field of view at wavelengths of 850 and 450 I¼m. SCUBA-2 is expected to have a huge impact on the study of galaxy formation and evolution in the early Universe as well as star and planet formation in our own Galaxy. Mapping the sky to the same S/N up to 1000 times faster than SCUBA, it will also act as a pathfinder for the new submillimetre interferometers such as ALMA. SCUBA-2's absorber-coupled pixels use superconducting transition edge sensors (Ph.D. Thesis, Stanford, 1995) operating at 120 mK for photon noise limited performance. The monolithic silicon detector arrays are deep-etched by the Bosch process to isolate the pixels on silicon nitride membranes (Nucl. Instr. and Meth. A, these proceedings). Electrical connections are made through indium bump bonds to a backplane that incorporates a SQUID time-domain multiplexer. We describe the key technologies that make SCUBA-2 possible and give an update on the considerable progress in the detector development and instrument design that has taken place over the last 2 years |
| Databáze: | OpenAIRE |
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