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Proceedings Paper

Antenna-coupled TES bolometers for the Keck array, Spider, and Polar-1
Author(s): R. O'Brient; P. A. R. Ade; Z. Ahmed; R. W. Aikin; M. Amiri; S. Benton; C. Bischoff; J. J. Bock; J. A. Bonetti; J. A. Brevik; B. Burger; G. Davis; P. Day; C. D. Dowell; L. Duband; J. P. Filippini; S. Fliescher; S. R. Golwala; J. Grayson; M. Halpern; M. Hasselfield; G. Hilton; V. V. Hristov; H. Hui; K. Irwin; S. Kernasovskiy; J. M. Kovac; C. L. Kuo; E. Leitch; M. Lueker; K. Megerian; L. Moncelsi; C. B. Netterfield; H. T. Nguyen; R. W. Ogburn; C. L. Pryke; C. Reintsema; J. E. Ruhl; M. C. Runyan; R. Schwarz; C. D. Sheehy; Z. Staniszewski; R. Sudiwala; G. Teply; J. E. Tolan; A. D. Turner; R. S. Tucker; A. Vieregg; D. V. Wiebe; P. Wilson; C. L. Wong; W. L. K. Wu; K. W. Yoon
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Paper Abstract

Between the BICEP2 and Keck Array experiments, we have deployed over 1500 dual polarized antenna coupled bolometers to map the Cosmic Microwave Background’s polarization. We have been able to rapidly deploy these detectors because they are completely planar with an integrated phased-array antenna. Through our experience in these experiments, we have learned of several challenges with this technology- specifically the beam synthesis in the antenna- and in this paper we report on how we have modified our designs to mitigate these challenges. In particular, we discus differential steering errors between the polarization pairs’ beam centroids due to microstrip cross talk and gradients of penetration depth in the niobium thin films of our millimeter wave circuits. We also discuss how we have suppressed side lobe response with a Gaussian taper of our antenna illumination pattern. These improvements will be used in Spider, Polar-1, and this season’s retrofit of Keck Array.

Paper Details

Date Published: 27 September 2012
PDF: 11 pages
Proc. SPIE 8452, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI, 84521G (27 September 2012); doi: 10.1117/12.927214
Show Author Affiliations
R. O'Brient, California Institute of Technology (United States)
Jet Propulsion Lab. (United States)
P. A. R. Ade, Univ. of Wales (United Kingdom)
Z. Ahmed, Stanford Univ. (United States)
Kavli Institute for Particle Astrophysics and Cosmology (United States)
R. W. Aikin, California Institute of Technology (United States)
M. Amiri, The Univ. of British Columbia (Canada)
S. Benton, Univ. of Toronto (Canada)
C. Bischoff, Harvard-Smithsonian Ctr. for Astrophysics (United States)
J. J. Bock, California Institute of Technology (United States)
Jet Propulsion Lab. (United States)
J. A. Bonetti, Jet Propulsion Lab. (United States)
J. A. Brevik, California Institute of Technology (United States)
B. Burger, The Univ. of British Columbia (Canada)
G. Davis, The Univ. of British Columbia (Canada)
P. Day, Jet Propulsion Lab. (United States)
C. D. Dowell, California Institute of Technology (United States)
Jet Propulsion Lab. (United States)
L. Duband, Service des Basses Températures, CNRS, Univ. Joseph Fourier (France)
J. P. Filippini, California Institute of Technology (United States)
S. Fliescher, Univ. of Minnesota (United States)
S. R. Golwala, California Institute of Technology (United States)
J. Grayson, Stanford Univ. (United States)
Kavli Institute for Particle Astrophysics and Cosmology (United States)
M. Halpern, The Univ. of British Columbia (Canada)
M. Hasselfield, The Univ. of British Columbia (Canada)
G. Hilton, National Institute of Standards and Technology (United States)
V. V. Hristov, The Univ. of British Columbia (Canada)
H. Hui, California Institute of Technology (United States)
K. Irwin, National Institute of Standards and Technology (United States)
S. Kernasovskiy, Stanford Univ. (United States)
Kavli Institute for Particle Astrophysics and Cosmology (United States)
J. M. Kovac, Harvard-Smithsonian Ctr. for Astrophysics (United States)
C. L. Kuo, Stanford Univ. (United States)
Kavli Institute for Particle Astrophysics and Cosmology (United States)
E. Leitch, The Univ. of Chicago (United States)
M. Lueker, California Institute of Technology (United States)
K. Megerian, Jet Propulsion Lab. (United States)
L. Moncelsi, California Institute of Technology (United States)
C. B. Netterfield, Univ. of Toronto (Canada)
H. T. Nguyen, California Institute of Technology (United States)
Jet Propulsion Lab. (United States)
R. W. Ogburn, California Institute of Technology (United States)
Jet Propulsion Lab. (United States)
C. L. Pryke, The Univ. of Chicago (United States)
C. Reintsema, National Institute of Standards and Technology (United States)
J. E. Ruhl, Case Western Reserve Univ. (United States)
M. C. Runyan, California Institute of Technology (United States)
Jet Propulsion Lab. (United States)
R. Schwarz, Univ. of Minnesota (United States)
C. D. Sheehy, Univ. of Minnesota (United States)
Z. Staniszewski, California Institute of Technology (United States)
Jet Propulsion Lab. (United States)
R. Sudiwala, Univ. of Wales (United Kingdom)
G. Teply, California Institute of Technology (United States)
J. E. Tolan, Stanford Univ. (United States)
Kavli Institute for Particle Astrophysics and Cosmology (United States)
A. D. Turner, Jet Propulsion Lab. (United States)
R. S. Tucker, California Institute of Technology (United States)
A. Vieregg, Harvard-Smithsonian Ctr. for Astrophysics (United States)
D. V. Wiebe, The Univ. of British Columbia (Canada)
P. Wilson, Jet Propulsion Lab. (United States)
C. L. Wong, Harvard-Smithsonian Ctr. for Astrophysics (United States)
W. L. K. Wu, Stanford Univ. (United States)
Kavli Institute for Particle Astrophysics and Cosmology (United States)
K. W. Yoon, Stanford Univ. (United States)
Kavli Institute for Particle Astrophysics and Cosmology (United States)


Published in SPIE Proceedings Vol. 8452:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI
Wayne S. Holland, Editor(s)

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