Measurements of cosmic microwave background (CMB) polarization may reveal the presence of a background of gravitational waves produced during cosmic inflation, providing thus a test of inflationary models. The Q&U Bolometric Interferometer for Cosmology (QUBIC) is an experiment designed to measure the CMB polarization. It is based on the novel concept of bolometric interferometry, which combines the sensitivity of bolometric detectors with the properties of beam synthesis and control of calibration offered by interferometers. To modulate and extract the input polarized signal of the CMB, QUBIC exploits Stokes polarimetry based on a rotating half-wave plate (HWP). In this work, we illustrate the design of the QUBIC instrument, focusing on the polarization modulation system, and we present preliminary results of beam calibrations and the performance of the HWP rotator at 300 K.

The QUBIC instrument for CMB polarization measurements / L. Mele, P. Ade, J.G. Alberro, A. Almela, G. Amico, L.H. Arnaldi, D. Auguste, J. Aumont, S. Azzoni, S. Banfi, E.S. Battistelli, A. Ba, B. B lier, D. Bennett, L. Berge, J.-. Bernard, M. Bersanelli, M.-. Bigot-Sazy, N. Bleurvacq, J. Bonaparte, J. Bonis, A. Bottani, E. Bunn, D. Burke, D. Buzi, F. Cavaliere, P. Chanial, C. Chapron, R. Charlassier, F. Columbro, A. Coppolecchia, G. D'Alessandro, P.D. Bernardis, G.D. Gasperis, M.D. Leo, M.D. Petris, S. Dheilly, L. Dumoulin, A. Etchegoyen, A. Fasciszewski, L.P. Ferreyro, D. Fracchia, C. Franceschet, M.M.G. Lerena, K. Ganga, B. Garcia, M.E.G. Redondo, M. Gaspard, D. Gayer, M. Gervasi, M. Giard, V. Gilles, Y. Giraud-Heraud, M. Gomez Berisso, M. Gonzalez, M. Gradziel, L. Grandsire, J.-. Hamilton, D. Harari, S. Henrot-Versille, D.T. Hoang, F. Incardona, E. Jules, J. Kaplan, C. Kristukat, L. Lamagna, S. Loucatos, T. Louis, B. Maffei, S. Marnieros, W. Marty, S. Masi, A. Mattei, A. May, M. McCulloch, S. Melhuish, A. Mennella, L. Montier, L. Mousset, L.M. Mundo, J.A. Murphy, J.D. Murphy, F. Nati, E. Olivieri, C. Oriol, C. O'Sullivan, A. Paiella, F. Pajot, A. Passerini, H. Pastoriza, A. Pelosi, C. Perbost, M. Perciballi, F. Pezzotta, F. Piacentini, M. Piat, L. Piccirillo, G. Pisano, M. Platino, G. Polenta, D. Pr le, R. Puddu, D. Rambaud, P. Ringegni, G.E. Romero, M. Salatino, J.M. Salum, A. Schillaci, C. Scoccola, S. Scully, S. Spinelli, G. Stankowiak, M. Stolpovskiy, A. Tartari, J.-. Thermeau, P. Timbie, M. Tomasi, S. Torchinsky, M. Tristram, G. Tucker, C. Tucker, D. Vigan, N. Vittorio, F. Voisin, F. Wicek, M. Zannoni, A. Zullo. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 1548(2020 May). ((Intervento presentato al 10. convegno Young Researcher Meeting tenutosi a Roma nel 2019 [10.1088/1742-6596/1548/1/012016].

The QUBIC instrument for CMB polarization measurements

S. Banfi;A. Ba;M. Bersanelli;F. Cavaliere;C. Franceschet;F. Incardona;A. Mattei;A. Mennella;F. Pezzotta;M. Tomasi;A. Zullo
2020

Abstract

Measurements of cosmic microwave background (CMB) polarization may reveal the presence of a background of gravitational waves produced during cosmic inflation, providing thus a test of inflationary models. The Q&U Bolometric Interferometer for Cosmology (QUBIC) is an experiment designed to measure the CMB polarization. It is based on the novel concept of bolometric interferometry, which combines the sensitivity of bolometric detectors with the properties of beam synthesis and control of calibration offered by interferometers. To modulate and extract the input polarized signal of the CMB, QUBIC exploits Stokes polarimetry based on a rotating half-wave plate (HWP). In this work, we illustrate the design of the QUBIC instrument, focusing on the polarization modulation system, and we present preliminary results of beam calibrations and the performance of the HWP rotator at 300 K.
Settore FIS/05 - Astronomia e Astrofisica
University of Rome "Tor Vergata"
Istituto Nazionale di Fisica Nucleare
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/772861
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