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Proceedings Paper

Opto-mechanical design and performance of a compact three-frequency camera for the Millimeter Bolometer Array Camera on the Atacama Cosmology Telescope
Author(s): R. J. Thornton; P. A. R. Ade; C. Allen; M. Amiri; J. W. Appel; E. S. Battistelli; B. Burger; J. A. Chervenak; M. J. Devlin; S. R. Dicker; W. B. Doriese; T. Essinger-Hileman; R. P. Fisher; J. W. Fowler; M. Halpern; P. C. Hargrave; M. Hasselfield; G. C. Hilton; A. D. Hincks; K. D. Irwin; N. Jarosik; M. Kaul; J. Klein; J. M. Lau; M. Limon; T. A. Marriage; K. L. Martocci; P. Mauskopf; S. H. Moseley; M. D. Niemack; L. Page; L. P. Parker; J. Reidel; C. D. Reintsema; S. T. Staggs; O. R. Stryzak; D. S. Swetz; E. R. Switzer; C. Tucker; E. J. Wollack; Y. Zhao
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Paper Abstract

The 6-meter Atacama Cosmology Telescope will map the cosmic microwave background at millimeter wavelengths. The commissioning instrument for the telescope, the Millimeter Bolometer Array Camera, is based on a refractive optical system which simultaneously images three separate fields of view at three different frequencies: 145, 220, and 280 GHz. Each frequency band contains around twelve individual optical elements at five different temperature stages ranging from 300 K to 300 mK and a 32 x 32 array of Transition Edge Sensor bolometers at 300 mK. We discuss the design of the close-packed on-axis optical design of the three frequencies. The thermal design and performance of the system are presented in the context of the scientific requirements and observing schedule. A major part of the design was the incorporation of multiple layers of magnetic shielding. We discuss the performance of the 145 GHz optical system in 2007 and the implementation of the additional two frequency channels in 2008.

Paper Details

Date Published: 18 July 2008
PDF: 10 pages
Proc. SPIE 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV, 70201R (18 July 2008); doi: 10.1117/12.790078
Show Author Affiliations
R. J. Thornton, Univ. of Pennsylvania (United States)
P. A. R. Ade, Cardiff Univ. (United Kingdom)
C. Allen, NASA Goddard Space Flight Ctr. (United States)
M. Amiri, Univ. of British Columbia (Canada)
J. W. Appel, Princeton Univ. (United States)
E. S. Battistelli, Univ. of British Columbia (Canada)
Univ. of Rome, La Sapienza (Italy)
B. Burger, Univ. of British Columbia (Canada)
J. A. Chervenak, NASA Goddard Space Flight Ctr. (United States)
M. J. Devlin, Univ. of Pennsylvania (United States)
S. R. Dicker, Univ. of Pennsylvania (United States)
W. B. Doriese, National Institute of Standards and Technology (United States)
T. Essinger-Hileman, Princeton Univ. (United States)
R. P. Fisher, Princeton Univ. (United States)
J. W. Fowler, Princeton Univ. (United States)
M. Halpern, Univ. of British Columbia (Canada)
P. C. Hargrave, Cardiff Univ. (United Kingdom)
M. Hasselfield, Univ. of British Columbia (Canada)
G. C. Hilton, National Institute of Standards and Technology (United States)
A. D. Hincks, Princeton Univ. (United States)
K. D. Irwin, National Institute of Standards and Technology (United States)
N. Jarosik, Princeton Univ. (United States)
M. Kaul, Univ. of Pennsylvania (United States)
J. Klein, Univ. of Pennsylvania (United States)
J. M. Lau, Stanford Univ. (United States)
M. Limon, Columbia Astrophysics Lab. (United States)
T. A. Marriage, Princeton Univ. (United States)
K. L. Martocci, CUNY (United States)
P. Mauskopf, Cardiff Univ. (United Kingdom)
S. H. Moseley, NASA Goddard Space Flight Ctr. (United States)
M. D. Niemack, Princeton Univ. (United States)
L. Page, Princeton Univ. (United States)
L. P. Parker, Princeton Univ. (United States)
J. Reidel, Princeton Univ. (United States)
C. D. Reintsema, National Institute of Standards and Technology (United States)
S. T. Staggs, Princeton Univ. (United States)
O. R. Stryzak, Princeton Univ. (United States)
D. S. Swetz, Univ. of Pennsylvania (United States)
E. R. Switzer, Princeton Univ. (United States)
C. Tucker, Cardiff Univ. (United Kingdom)
E. J. Wollack, NASA Goddard Space Flight Ctr. (United States)
Y. Zhao, Princeton Univ. (United States)


Published in SPIE Proceedings Vol. 7020:
Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV
William D. Duncan; Wayne S. Holland; Stafford Withington; Jonas Zmuidzinas, Editor(s)

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