Instrument design and characterization of the Millimeter Bolometer Array Camera on the Atacama Cosmology Telescope

Swetz, D. S., Ade, Peter A. R., Allen, C., Amiri, M., Appel, J. W., Battistelli, E. S., Burger, B., Chervenak, J. A., Dahlen, A. J., Das, S., Denny, S., Devlin, M. J., Dicker, S. R., Doriese, W. B., Dünner, R., Essinger-Hileman, T., Fisher, R. P., Fowler, J. W., Gao, X., Hajian, A., Halpern, M., Hargrave, Peter Charles ORCID: https://orcid.org/0000-0002-3109-6629, Hasselfield, M., Hilton, G. C., Hincks, A. D., Irwin, K. D., Jarosik, N., Kaul, M., Klein, J., Knotek, S., Lau, J. M., Limon, M., Lupton, R. H., Marriage, T. A., Martocci, K. L., Mauskopf, Philip Daniel ORCID: https://orcid.org/0000-0001-6397-5516, Moseley, S. H., Netterfield, C. B., Niemack, M. D., Nolta, M. R., Page, L., Parker, L. P., Reid, B. A., Reintsema, C. D., Sederberg, A. J., Sehgal, N., Sievers, J. L., Spergel, D. N., Staggs, S. T., Stryzak, O. R., Switzer, E. R., Thornton, R. J., Tucker, Carole ORCID: https://orcid.org/0000-0002-1851-3918, Wollack, E. J. and Zhao, Y. 2008. Instrument design and characterization of the Millimeter Bolometer Array Camera on the Atacama Cosmology Telescope. Presented at: Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV, Marseille, France, 26-28 June 2008. Published in: Duncan, William D., Holland, Wayne S., Withington, Stafford and Zmuidzinas, Jonas eds. Proceedings of the Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV Conference, Marseille, France, 26-28 June 2008. Proceedings of SPIE , vol.7020 (7020) Bellingham, WA: SPIE, p. 702008. 10.1117/12.789876

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Abstract

The Millimeter Bolometer Array Camera (MBAC) was commissioned in the fall of 2007 on the new 6-meterAtacama Cosmology Telescope (ACT). The MBAC on the ACT will map the temperature anisotropies of theCosmic Microwave Background (CMB) with arc-minute resolution. For this first observing season, the MBACcontained a diffraction-limited, 32 by 32 element, focal plane array of Transition Edge Sensor (TES) bolometersfor observations at 145 GHz. This array was coupled to the telescope with a series of cold, refractive, reimagingoptics. To meet the performance specifications, the MBAC employs four stages of cooling using closed-cycle3He/4He sorption fridge systems in combination with pulse tube coolers. In this paper we present the design ofthe instrument and discuss its performance during the first observing season. Finally, we report on the statusof the MBAC for the 2008 observing season, when the instrument will be upgraded to a total of three separate1024-element arrays at 145 GHz, 220 GHz and 280 GHz.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Publisher:	SPIE
ISBN:	9780819472304
ISSN:	0277-786X
Last Modified:	06 Nov 2022 14:00
URI:	https://orca.cardiff.ac.uk/id/eprint/28430

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