Opto-mechanical design and performance of a compact three-frequency camera for the Millimeter Bolometer Array Camera on the Atacama Cosmology Telescope

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. Fishery, J. W. Fowler, M. Halpern, P. C. Hargrave, M. Hasselfield, G. C. Hilton, A. D. Hincks, K. D. IrwinN. 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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Scopus citations

Abstract

The 6-meter Atacama Cosmology Telescope will map the cosmic microwave background at millimeter wave-lengths. 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 × 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.

Original languageEnglish (US)
Title of host publicationMillimeter and Submillimeter Detectors and Instrumentation for Astronomy IV
DOIs
StatePublished - Sep 26 2008
EventMillimeter and Submillimeter Detectors and Instrumentation for Astronomy IV - Marseille, France
Duration: Jun 26 2008Jun 28 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7020
ISSN (Print)0277-786X

Other

OtherMillimeter and Submillimeter Detectors and Instrumentation for Astronomy IV
CountryFrance
CityMarseille
Period6/26/086/28/08

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Keywords

  • CMB telescope
  • Cryogenic
  • Mechanical design
  • Millimeter camera

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    Thornton, R. J., Ade, P. A. R., Allen, C., Amiri, M., Appel, J. W., Battistelli, E. S., Burger, B., Chervenak, J. A., Devlin, M. J., Dicker, S. R., Doriese, W. B., Essinger-Hileman, T., Fishery, R. P., Fowler, J. W., Halpern, M., Hargrave, P. C., Hasselfield, M., Hilton, G. C., Hincks, A. D., ... Zhao, Y. (2008). Opto-mechanical design and performance of a compact three-frequency camera for the Millimeter Bolometer Array Camera on the Atacama Cosmology Telescope. In Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV [70201R] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7020). https://doi.org/10.1117/12.790078