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EBEX: a balloon-borne CMB polarization experiment

Reichborn-Kjennerud, Britt and Matsumura, Tomotake (2010) EBEX: a balloon-borne CMB polarization experiment. In: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V. Proceedings of SPIE. No.7741. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 77411C. ISBN 978-0-81948-231-0.

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EBEX is a NASA-funded balloon-borne experiment designed to measure the polarization of the cosmic microwave background (CMB). Observations will be made using 1432 transition edge sensor (TES) bolometric detectors read out with frequency multiplexed SQuIDs. EBEX will observe in three frequency bands centered at 150, 250, and 410 GHz, with 768, 384, and 280 detectors in each band, respectively. This broad frequency coverage is designed to provide valuable information about polarized foreground signals from dust. The polarized sky signals will be modulated with an achromatic half wave plate (AHWP) rotating on a superconducting magnetic bearing (SMB) and analyzed with a fixed wire grid polarizer. EBEX will observe a patch covering ~1% of the sky with 8' resolution, allowing for observation of the angular power spectrum from l = 20 to 1000. This will allow EBEX to search for both the primordial B-mode signal predicted by inflation and the anticipated lensing B-mode signal. Calculations to predict EBEX constraints on r using expected noise levels show that, for a likelihood centered around zero and with negligible foregrounds, 99% of the area falls below r = 0.035. This value increases by a factor of 1.6 after a process of foreground subtraction. This estimate does not include systematic uncertainties. An engineering flight was launched in June, 2009, from Ft. Sumner, NM, and the long duration science flight in Antarctica is planned for 2011. These proceedings describe the EBEX instrument and the North American engineering flight.

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Additional Information:© 2010 SPIE. EBEX is a NASA supported mission through grant numbers NNX08AG40G and NNX07AP36H. We thank Columbia Scientific Balloon Facility for their enthusiastic support of EBEX. We also acknowledge support from CNRS, Minnesota Super Computing Institute and the Science and Technology Facilities Council. This research used resources of the National Energy Research Scientific Computing Center, which is supported by the office of Science of the U.S. Department of Energy under contract No. DE-AC02-05CH11231. The McGill authors acknowledge funding from the Canadian Space Agency, Natural Sciences and Engineering Research Council, Canadian Institute for Advanced Research, Canadian Foundation for Innovation and Canada Research Chairs program.
Funding AgencyGrant Number
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Minnesota Super Computing InstituteUNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
Department of Energy (DOE)DE-AC02-05CH11231
Canadian Space Agency (CSA)UNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Canadian Institute for Advanced Research (CIFAR)UNSPECIFIED
Canada Foundation for InnovationUNSPECIFIED
Canada Research Chairs ProgramUNSPECIFIED
Subject Keywords:CMB Polarization, EBEX, Balloon-borne, B-mode
Series Name:Proceedings of SPIE
Issue or Number:7741
Record Number:CaltechAUTHORS:20161108-135011339
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Official Citation:Britt Reichborn-Kjennerud ; Asad M. Aboobaker ; Peter Ade ; François Aubin ; Carlo Baccigalupi ; Chaoyun Bao ; Julian Borrill ; Christopher Cantalupo ; Daniel Chapman ; Joy Didier ; Matt Dobbs ; Julien Grain ; William Grainger ; Shaul Hanany ; Seth Hillbrand ; Johannes Hubmayr ; Andrew Jaffe ; Bradley Johnson ; Terry Jones ; Theodore Kisner ; Jeff Klein ; Andrei Korotkov ; Sam Leach ; Adrian Lee ; Lorne Levinson ; Michele Limon ; Kevin MacDermid ; Tomotake Matsumura ; Xiaofan Meng ; Amber Miller ; Michael Milligan ; Enzo Pascale ; Daniel Polsgrove ; Nicolas Ponthieu ; Kate Raach ; Ilan Sagiv ; Graeme Smecher ; Federico Stivoli ; Radek Stompor ; Huan Tran ; Matthieu Tristram ; Gregory S. Tucker ; Yury Vinokurov ; Amit Yadav ; Matias Zaldarriaga ; Kyle Zilic; EBEX: a balloon-borne CMB polarization experiment. Proc. SPIE 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V, 77411C (July 15, 2010); doi:10.1117/12.857138
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71815
Deposited By: Tony Diaz
Deposited On:09 Nov 2016 00:33
Last Modified:11 Nov 2021 04:51

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