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MUSTANG 2: A Large Focal Plane Array for the 100 m Green Bank Telescope

Authors
  • Dicker, S. R.1
  • Ade, P. A. R.2
  • Aguirre, J.1
  • Brevik, J. A.3
  • Cho, H. M.3
  • Datta, R.4
  • Devlin, M. J.1
  • Dober, B.1
  • Egan, D.5
  • Ford, J.5
  • Ford, P.5
  • Hilton, G.3
  • Irwin, K. D.3
  • Mason, B. S.6
  • Marganian, P.5
  • Mello, M.5
  • McMahon, J. J.4
  • Mroczkowski, T.7
  • Rosenman, M.1
  • Tucker, C.2
  • And 4 more
  • 1 University of Pennsylvania, Department of Physics and Astronomy, 209 S. 33rd St, Philadelphia, PA, 19104, USA , Philadelphia (United States)
  • 2 Cardiff University, Department of Physics and Astronomy, The Parade, Cardiff, CF24 3AA, UK , Cardiff (United Kingdom)
  • 3 NIST, 325 Broadway, Boulder, CO, 80305, USA , Boulder (United States)
  • 4 University of Michigan, Department of Physics, 450 Church St, Ann Arbor, MI, 48109, USA , Ann Arbor (United States)
  • 5 NRAO, Green Bank, WV, 24944, USA , Green Bank (United States)
  • 6 NRAO, 520 Edgemont Rd, Charlotesville, VA, 22903, USA , Charlotesville (United States)
  • 7 Naval Research Laboratory, 4555 Overlook Ave. S.W., Washington, DC, 20375, USA , Washington (United States)
Type
Published Article
Journal
Journal of Low Temperature Physics
Publisher
Springer US
Publication Date
Jan 17, 2014
Volume
176
Issue
5-6
Pages
808–814
Identifiers
DOI: 10.1007/s10909-013-1070-8
Source
Springer Nature
Keywords
License
Yellow

Abstract

This paper describes MUSTANG 2, a 338 element focal plane array that is being built for the Green Bank Telescope. Each element consists of a profiled feedhorn coupled to two transition edge sensor bolometers, one for each polarization. Initial deployment will be with 32 detectors, but once fully populated, MUSTANG 2 will be capable of mapping a 8′×8′\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$8'\times 8'$$\end{document} area to 23μ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$23~\upmu $$\end{document}Jy in 1 h with good image fidelity on angular scales from 9′′\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$9''$$\end{document} to 6′\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$6'$$\end{document}. As well as an instrument overview, the choice of bandpass and the design of the feeds, detectors and readout are given.

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