1. Optimization and sensitivity of the Keck Array
- Author
-
D. V. Wiebe, Peter A. R. Ade, C. L. Wongg, Abigail G. Vieregg, James J. Bock, C. L. Kuo, M. Lueker, Z. K. Staniszewski, A. D. Turner, John M Kovac, C. D. Dowell, C. D. Sheehy, R. V. Sudiwala, Justus A. Brevik, Kent D. Irwin, M. Amiri, L. Duband, G. P. Teply, R. W. Aikin, J. E. Tolan, Sunil Golwala, S. Fliescher, S. A. Kernasovskiy, M. Hasselfield, J. E. Ruhl, G. Hiltion, R. W. Ogburn, C. D. Reintsema, Roger O'Brient, G. Davis, Colin A. Bischoff, Calvin B. Netterfield, Jeffrey P. Filippini, P. R. Wilson, R. Schwarz, H. T. Nguyen, E. M. Leitch, J. A. Bonetti, Mark Halpern, B. Burger, C. Pryke, M. C. Runyan, S. J. Benton, V. V. Hristov, Holland, Wayne S., and Zmuidzinas, J.
- Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,Cosmic microwave background ,FOS: Physical sciences ,Astrophysics::Cosmology and Extragalactic Astrophysics ,01 natural sciences ,law.invention ,Optics ,law ,0103 physical sciences ,010306 general physics ,010303 astronomy & astrophysics ,Instrumentation and Methods for Astrophysics (astro-ph.IM) ,Astrophysics::Galaxy Astrophysics ,Physics ,Time domain multiplexing ,business.industry ,Bolometer ,Detector ,Astrophysics::Instrumentation and Methods for Astrophysics ,Polarization (waves) ,Refracting telescope ,Imaging array ,Astrophysics::Earth and Planetary Astrophysics ,Astrophysics - Instrumentation and Methods for Astrophysics ,business ,Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
The Keck Array (SPUD) began observing the cosmic microwave background's polarization in the winter of 2011 at the South Pole. The Keck Array follows the success of the predecessor experiments Bicep and Bicep2, using five on-axis refracting telescopes. These have a combined imaging array of 2500 antenna-coupled TES bolometers read with a SQUID-based time domain multiplexing system. We will discuss the detector noise and the optimization of the readout. The achieved sensitivity of the Keck Array is 11.5 {\mu}K_(CMB)*sqrt{s} in the 2012 configuration., Comment: Presented at SPIE 2012 Astronomical Telescopes and Instrumentation Conference. Will be published in the proceedings
- Published
- 2012