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DASI: The Degree Angular Scale Interferometer

Published online by Cambridge University Press:  26 May 2016

E. M. Leitch
Affiliation:
University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA
J. E. Carlstrom
Affiliation:
University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA
G. Davidson
Affiliation:
University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA
M. Dragovan
Affiliation:
University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA
N. W. Halverson
Affiliation:
University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA
W. L. Holzapfel
Affiliation:
University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA
S. Laroque
Affiliation:
University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA
J. Kovac
Affiliation:
University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA
C. Pryke
Affiliation:
University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA
E. Schartman
Affiliation:
University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA
M. J. Yamasaki
Affiliation:
University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA

Abstract

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We describe the design and current status of the Degree Angular Scale Interferometer (DASI), a compact cm-wave interferometer operating at the Amundsen-Scott South Pole research station. With 20-cm diameter primary antenna elements operating over the frequency range 26 − 36 GHz, DASI is optimized to measure the power spectrum of the cosmic microwave background radiation (CMBR) over the multipole range 140 − 920, (corresponding to scales of 25′ − 2°.6), as well as make high-sensitivity maps of the microwave sky. The telescope was built at the University of Chicago and deployed at the South Pole during the 1999-2000 austral summer.

Type
Part II: Primordial CMB Observations: Ground based
Copyright
Copyright © Astronomical Society of the Pacific 2005 

References

de Bernardis, P. et al. 2000, Nature, 404, 955.CrossRefGoogle Scholar
Lay, O. P. & Halverson, N. W. 2000, ApJ, 543.Google Scholar
Leitch, E. M., Readhead, A. C. S., Pearson, T. J. & Myers, S. T. 1997, ApJ 486, L23.CrossRefGoogle Scholar
Pospieszalski, M. W. 1993, in Proc. of 23rd European Microwave Conf. (Madrid), 73.Google Scholar
Pospieszalski, M. W., Nguyen, L. D., Lui, M., Lui, T., Thompson, M. A. & Delaney, M. J. 1994, in Proc. 1994 IEEE MTT-S Int. Microwave Symp. (San Diego), 1345.Google Scholar
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