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Title	The SNAP near infrared detectors
Creator/Author	Tarle, G. ; Akerlof, C. ; Aldering, G. ; Amanullah, R. ; Astier, P. ; Barrelet, E. ; Bebek, C. ; Bergstrom, L. ; Bercovitz, J. ; Bernstein, G. ; Bester, M. ; Bonissent, A. ; Bower, C. ; Carithers, W. ; Commins, E.D. ; Day, C. ; Deustua, S. ; DiGennaro, R. ; Ealet, Anne ; Ellis, R.S. ; Eriksson, M. ; Fruchter, A. ; Genat, J.-F. ; Goldhaber, G. ; Goobar, A. ; Groom, D. ; Harris, S. ; Harvey, P. ; Heetderks, H. ; Holland, S. ; Huterer, D. ; Karcher, A. ; Kim, A. ; Kolbe, W. ; Krieger, B. ; Lafever, R. ; Lamoureux, J. ; Lampton, M. ; Levi, M.E. ; Levin, D. ; Linder, E. ; Loken, S. ; Malina, R. ; Massey, R. ; Miguel, R. ; McKay, T. ; McKee, S. ; Mortsell, E. ; Mostek, N. ; Mufson, S. ; Musser, J. ; Nugent, P. ; Oluseyi, H. ; Pain, R. ; Palaio, N. ; Pankow, D. ; Perlmutter, S. ; Pratt, R. ; Prieto, E. ; Refregier, A. ; Rhodes, J. ; Robinson, K. ; Roe, N. ; Sholl, M. ; Schubnell, M. ; Smadja, G. ; Smoot, G. ; Spadafora, A. ; Tomasch, A. ; von der Lippe, H. ; Vincent, R. ; Walder, J. ; Wang, G.
Publication Date	2002 Jul 29
OSTI Identifier	OSTI ID: 821448
Report Number(s)	LBNL--51137
DOE Contract Number	AC03-76SF00098
Other Number(s)	R&D PROJ: PDSNAP ; TRN: US200411%%155
Resource Type	Conference
Resource Relation	SPIE's Astronomical Telescopes and Instrumentation, Waikoloa, HI (US), 08/22/2002--08/28/2002 ; PBD: 29 Jul 2002
Research Org	Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
Sponsoring Org	USDOE Director, Office of Science. Office of High Energy and Nuclear Physics. Division of High Energy Physics (US)
Subject	71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; ACCELERATION; ACCURACY; MONITORING; PHOTOMETRY; PROBES; SENSITIVITY; STARS; SUPERNOVAE; TELESCOPES; UNIVERSE
Description/Abstract	The SuperNova/Acceleration Probe (SNAP) will measure precisely the cosmological expansion history over both the acceleration and deceleration epochs and thereby constrain the nature of the dark energy that dominates our universe today. The SNAP focal plane contains equal areas of optical CCDs and NIR sensors and an integral field spectrograph. Having over 150 million pixels and a field-of-view of 0.34 square degrees, the SNAP NIR system will be the largest yet constructed. With sensitivity in the range 0.9-1.7{micro}m, it will detect Type Ia supernovae between z= 1 and 1.7 and will provide follow-up precision photometry for all supernovae. HgCdTe technology, with a cut-off tuned to 1.7{micro}m, will permit passive cooling at 140 K while maintaining noise below zodiacal levels. By dithering to remove the effects of intrapixel variations and by careful attention to other instrumental effects, we expect to control relative photometric accuracy below a few hundredths of a magnitude. Because SNAP continuously revisits the same fields we will be able to achieve outstanding statistical precision on the photometry of reference stars in these fields, allowing precise monitoring of our detectors. The capabilities of the NIR system for broadening the science reach of SNAP are discussed.
Country of Publication	United States
Language	English
Format	8 pages ; PDFN
Availability	OSTI as DE00821448 To purchase this media from NTIS, click here
System Entry Date	2004 Mar 22
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