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Proceedings Paper

EBEX: a balloon-borne CMB polarization experiment
Author(s): 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
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Paper Abstract

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.

Paper Details

Date Published: 15 July 2010
PDF: 12 pages
Proc. SPIE 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V, 77411C (15 July 2010); doi: 10.1117/12.857138
Show Author Affiliations
Britt Reichborn-Kjennerud, Columbia Univ. (United States)
Asad M. Aboobaker, Univ. of Minnesota (United States)
Peter Ade, Cardiff Univ. (United Kingdom)
François Aubin, McGill Univ. (Canada)
Carlo Baccigalupi, Scuola Internazionale Superiore di Studi Avanzati (Italy)
Chaoyun Bao, Univ. of Minnesota (United States)
Julian Borrill, Lawrence Berkeley National Lab. (United States)
Christopher Cantalupo, Lawrence Berkeley National Lab. (United States)
Daniel Chapman, Columbia Univ. (United States)
Joy Didier, Columbia Univ. (United States)
Matt Dobbs, McGill Univ. (Canada)
Julien Grain, Univ. Paris-Sud (France)
William Grainger, Cardiff Univ. (United Kingdom)
Shaul Hanany, Univ. of Minnesota (United States)
Seth Hillbrand, Columbia Univ. (United States)
Johannes Hubmayr, National Institute of Standards and Technology (United States)
Andrew Jaffe, Imperial College London (United Kingdom)
Bradley Johnson, Univ. of California, Berkeley (United States)
Terry Jones, Univ. of Minnesota (United States)
Theodore Kisner, Lawrence Berkeley National Lab. (United States)
Jeff Klein, Univ. of Minnesota (United States)
Andrei Korotkov, Brown Univ. (United States)
Sam Leach, Scuola Internazionale Superiore di Studi Avanzati (Italy)
Adrian Lee, Univ. of California, Berkeley (United States)
Lorne Levinson, Weizmann Institute of Science (Israel)
Michele Limon, Columbia Univ. (United States)
Kevin MacDermid, McGill Univ. (Canada)
Tomotake Matsumura, California Institute of Technology (United States)
Xiaofan Meng, Univ. of California, Berkeley (United States)
Amber Miller, Columbia Univ. (United States)
Michael Milligan, Univ. of Minnesota (United States)
Enzo Pascale, Cardiff Univ. (United Kingdom)
Daniel Polsgrove, Univ. of Minnesota (United States)
Nicolas Ponthieu, Univ. Paris-Sud (France)
Kate Raach, Univ. of Minnesota (United States)
Ilan Sagiv, Univ. of Minnesota (United States)
Graeme Smecher, McGill Univ. (Canada)
Federico Stivoli, Univ. Paris Sud (France)
Radek Stompor, Lab. Astroparticule et Cosmologie, CNRS, Univ. Paris Diderot (France)
Huan Tran, Univ. of California, Berkeley (United States)
Matthieu Tristram, Lab. de l'Accélérateur Linéaire, CNRS, Univ. Paris Sud (France)
Gregory S. Tucker, Brown Univ. (United States)
Yury Vinokurov, Brown Univ. (United States)
Amit Yadav, Institute for Advanced Study (United States)
Matias Zaldarriaga, Institute for Advanced Study (United States)
Kyle Zilic, Univ. of Minnesota (United States)


Published in SPIE Proceedings Vol. 7741:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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