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Development of NIR detectors and science-driven requirements for SNAP

Brown, M. G. and Bebek, C. and Bernstein, G. and Bonissent, A. and Carithers, B. and Cole, D. and Figer, D. and Gerdes, D. and Gladney, L. and Lorenzon, W. and Kim, A. and Kushner, G. and Kuznetsova, N. and Lampton, M. and Levi, M. and Linder, E. and McKee, S. and Miquel, R. and Mostek, N. and Mufson, S. and Perlmutter, S. and Schubnell, M. and Seshadri, S. and Shukla, H. and Smith, R. and Stebbins, A. and Stoughton, C. and Tarlé, G. (2006) Development of NIR detectors and science-driven requirements for SNAP. In: Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter. Proceedings of SPIE. No.6265. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 626535. ISBN 0819463302.

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Precision near infrared (NIR) measurements are essential for the next generation of ground and space based instruments. The SuperNova Acceleration Probe (SNAP) will measure thousands of type Ia supernovae up to a redshift of 1.7. The highest redshift supernovae provide the most leverage for determining cosmological parameters, in particular the dark energy equation of state and its possible time evolution. Accurate NIR observations are needed to utilize the full potential of the highest redshift supernovae. Technological improvements in NIR detector fabrication have lead to high quantum efficiency, low noise detectors using a HgCdTe diode with a band-gap that is tuned to cutoff at 1.7 μm. The effects of detector quantum efficiency, read noise, and dark current on lightcurve signal to noise, lightcurve parameter errors, and distance modulus fits are simulated in the SNAPsim framework. Results show that improving quantum efficiency leads to the largest gains in photometric accuracy for type Ia supernovae. High quantum efficiency in the NIR reduces statistical errors and helps control systematic uncertainties at the levels necessary to achieve the primary SNAP science goals.

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Additional Information:© 2006 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was supported by DOE grant No. DE-FG02-95ER40899. Special thanks to the SNAP simulation team.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-95ER40899
Subject Keywords:NIR detectors, HgCdTe, supernova, dark energy, SNAP
Series Name:Proceedings of SPIE
Issue or Number:6265
Record Number:CaltechAUTHORS:20180619-111826014
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Official Citation:M. G. Brown, C. Bebek, G. Bernstein, A. Bonissent, B. Carithers, D. Cole, D. Figer, D. Gerdes, L. Gladney, W. Lorenzon, A. Kim, G. Kushner, N. Kuznetsova, M. Lampton, M. Levi, E. Linder, S. McKee, R. Miquel, N. Mostek, S. Mufson, S. Perlmutter, M. Schubnell, S. Seshadri, H. Shukla, R. Smith, A. Stebbins, C. Stoughton, G. Tarlé, "Development of NIR detectors and science-driven requirements for SNAP", Proc. SPIE 6265, Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter, 626535 (5 July 2006); doi: 10.1117/12.672141;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87226
Deposited By: George Porter
Deposited On:19 Jun 2018 19:41
Last Modified:15 Nov 2021 20:46

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