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QUBIC: the Q&U Bolometric Interferometer for Cosmology

By M. Piat, E. Battistelli, A. Baù, D. Bennett, L. Bergé, J.-P. Bernard, P. De Bernardis, M.-A. Bigot-Sazy, G. Bordier, A. Bounab, E. Bréelle, E. F. Bunn, M. Calvo, R. Charlassier, S. Collin, A. Cruciani, G. Curran, L. Dumoulin, A. Gault, M. Gervasi, A. Ghribi, M. Giard, C. Giordano, Y. Giraud-Héraud, M. Gradziel, L. Guglielmi, J.-C. Hamilton, V. Haynes, J. Kaplan, A. Korotkov, J. Landé, B. Maffei, M. Maiello, S. Malu, S. Marnieros, J. Martino, S. Masi, L. Montier, A. Murphy, F. Nati, C. O'Sullivan, F. Pajot, C. Parisel, A. Passerini, S. Peterzen, F. Piacentini, L. Piccirillo, G. Pisano, G. Polenta, D. Prêle, David Romano, C. Rosset, M. Salatino, A. Schillaci, G. Sironi, R. Sordini, S. Spinelli, A. Tartari, P. Timbie, G. Tucker, L. Vibert, F. Voisin, R. A. Watson and M. Zannoni

Abstract

From the issue entitled "Low Temperature Detectors (LTD-14): Part II"International audienceThe primordial B-mode polarisation of the Cosmic Microwave Background is the imprints of the gravitational wave background generated by inflation. Observing the B-mode is up to now the most direct way to constrain the physics of the primordial Universe, especially inflation. To detect these B-modes, high sensitivity is required as well as an exquisite control of systematics effects. To comply with these requirements, we propose a new instrument called QUBIC (Q and U Bolometric Interferometer for Cosmology) based on bolometric interferometry. The control of systematics is obtained with a close-packed interferometer while bolometers cooled to very low temperature allow for high sensitivity. We present the architecture of this new instrument, the status of the project and the self-calibration technique which allows accurate measurement of the instrumental systematic effects

Topics: Cosmic microwave background, Polarisation, Interferometer, Bolometer, [ SDU.ASTR.CO ] Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], [ PHYS.ASTR.CO ] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]
Publisher: Springer Verlag (Germany)
Year: 2012
DOI identifier: 10.1007/S10909-012-0522-X
OAI identifier: oai:HAL:hal-00735821v1
Provided by: Hal-Diderot
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