An All Silicon Feedhorn-Coupled Focal Plane for Cosmic Microwave Background Polarimetry

Upcoming experiments aim to produce high fidelity polarization maps of the cosmic microwave background. To achieve the required sensitivity, we are developing monolithic, feedhorn-coupled transition edge sensor polarimeter arrays operating at 150 GHz. We describe this focal plane architecture and th...

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Bibliographic Details
Published in:Journal of low temperature physics 2012-06, Vol.167 (5-6), p.904-910
Main Authors: Hubmayr, J., Appel, J. W., Austermann, J. E., Beall, J. A., Becker, D., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Cho, H. M., Crites, A. T., Essinger-Hileman, T., Fox, A., George, E. M., Halverson, N. W., Harrington, N. L., Henning, J. W., Hilton, G. C., Holzapfel, W. L., Irwin, K. D., Lee, A. T., Li, D., McMahon, J., Mehl, J., Natoli, T., Niemack, M. D., Newburgh, L. B., Nibarger, J. P., Parker, L. P., Schmitt, B. L., Staggs, S. T., Van Lanen, J., Wollack, E. J., Yoon, K. W.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Condensed Matter Physics
Magnetic Materials
Magnetism
Physics
Physics and Astronomy
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Summary:Upcoming experiments aim to produce high fidelity polarization maps of the cosmic microwave background. To achieve the required sensitivity, we are developing monolithic, feedhorn-coupled transition edge sensor polarimeter arrays operating at 150 GHz. We describe this focal plane architecture and the current status of this technology, focusing on single-pixel polarimeters being deployed on the Atacama B-mode Search (ABS) and an 84-pixel demonstration feedhorn array backed by four 10-pixel polarimeter arrays. The feedhorn array exhibits symmetric beams, cross-polar response
ISSN:0022-2291
1573-7357
DOI:10.1007/s10909-011-0420-7