Conference Proceedings
The bolometric focal plane array of the POLARBEAR CMB experiment
K Arnold, PAR Ade, AE Anthony, D Barron, D Boettger, J Borrill, S Chapman, Y Chinone, MA Dobbs, J Errard, G Fabbian, D Flanigan, G Fuller, A Ghribi, W Grainger, N Halverson, M Hasegawa, K Hattori, M Hazumi, WL Holzapfel Show all
Proceedings of SPIE the International Society for Optical Engineering | Published : 2012
DOI: 10.1117/12.927057
Abstract
The POLARBEAR Cosmic Microwave Background (CMB) polarization experiment is currently observing from the Atacama Desert in Northern Chile. It will characterize the expected B-mode polarization due to gravitational lensing of the CMB, and search for the possible B-mode signature of inflationary gravitational waves. Its 250 mK focal plane detector array consists of 1,274 polarization-sensitive antenna-coupled bolometers, each with an associated lithographed band-defining filter. Each detector's planar antenna structure is coupled to the telescope's optical system through a contacting dielectric lenslet, an architecture unique in current CMB experiments. We present the initial characterization o..
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Awarded by Japan Society for the Promotion of Science
Funding Acknowledgements
The POLARBEAR project is funded by the National Science Foundation under grant AST-0618398. Antennacoupled bolometer development at Berkeley is also funded by NASA under grant NNG06GJ08G. The KEK authors were supported by MEXT KAKENHI Grant Number 21111002. The McGill authors acknowledge funding from the Natural Sciences and Engineering Research Council and Canadian Institute for Advanced Research. MD acknowledges support from an Alfred P. Sloan Research Fellowship and Canada Research Chairs program. All silicon wafer-based technology is fabricated at the UC Berkeley Nanolab.