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Published April 2022 | Accepted Version
Journal Article Open

QUBIC III: Laboratory characterization

Torchinsky, S. A. ORCID icon
Hamilton, J.-Ch.
Piat, M.
Battistelli, E. S. ORCID icon
de Bernardis, P. ORCID icon
Chapron, C.
D'Alessandro, G.
De Petris, M. ORCID icon
Gamboa Lerena, M. M. ORCID icon
González, M.
Grandsire, L.
Marnieros, S. ORCID icon
Masi, S. ORCID icon
Mennella, A. ORCID icon
Mousset, L.
Murphy, J. D.
O'Sullivan, C.
Prêle, D. ORCID icon
Stankowiak, G. ORCID icon
Tartari, A. ORCID icon
Thermeau, J.-P.
Voisin, F.
Zannoni, M. ORCID icon
Ade, P. ORCID icon
Alberro, J. G.
Almela, A.
Amico, G.
Arnaldi, L. H.
Auguste, D.
Aumont, J. ORCID icon
Azzoni, S. ORCID icon
Banfi, S.
Baù, A.
Bélier, B. ORCID icon
Bennett, D. ORCID icon
Bergé, L.
Bernard, J.-Ph.
Bersanelli, M.
Bigot-Sazy, M.-A.
Bonaparte, J.
Bonis, J.
Bunn, E. ORCID icon
Burke, D.
Buzi, D.
Cavaliere, F.
Chanial, P. ORCID icon
Charlassier, R.
Cobos Cerutti, A. C.
Columbro, F. ORCID icon
Coppolecchia, A. ORCID icon
De Gasperis, G. ORCID icon
De Leo, M.
Dheilly, S.
Duca, C.
Dumoulin, L.
Etchegoyen, A. ORCID icon
Fasciszewski, A.
Ferreyro, L. P.
Fracchia, D.
Franceschet, C. ORCID icon
Ganga, K. M.
García, B.
García Redondo, M. E.
Gaspard, M.
Gayer, D.
Gervasi, M. ORCID icon
Giard, M.
Gilles, V.
Giraud-Heraud, Y.
Gómez Berisso, M.
Gradziel, M.
Hampel, M. R.
Harari, D.
Henrot-Versillé, S.
Incardona, F.
Jules, E.
Kaplan, J.
Kristukat, C. ORCID icon
Lamagna, L. ORCID icon
Loucatos, S. ORCID icon
Louis, T. ORCID icon
Maffei, B. ORCID icon
Marty, W.
Mattei, A.
May, A.
McCulloch, M.
Mele, L. ORCID icon
Melo, D.
Montier, L.
Mundo, L. M.
Murphy, J. A.
Nati, F. ORCID icon
Olivieri, E. ORCID icon
Oriol, C.
Paiella, A. ORCID icon
Pajot, F.
Passerini, A.
Pastoriza, H. ORCID icon
Pelosi, A.
Perbost, C.
Perciballi, M.
Pezzotta, F.
Piacentini, F. ORCID icon
Piccirillo, L.
Pisano, G.
Platino, M.
Polenta, G. ORCID icon
Puddu, R.
Rambaud, D.
Rasztocky, E. ORCID icon
Ringegni, P.
Romero, G. E.
Salum, J. M.
Schillaci, A. ORCID icon
Scóccola, C. G. ORCID icon
Scully, S.
Spinelli, S.
Stolpovskiy, M. ORCID icon
Supanitsky, A. D. ORCID icon
Timbie, P. ORCID icon
Tomasi, M. ORCID icon
Tucker, C. ORCID icon
Tucker, G. ORCID icon
Viganò, D. ORCID icon
Vittorio, N.
Wicek, F.
Wright, M.
Zullo, A.
QUBIC Collaboration

Abstract

We report on an extensive test campaign of a prototype version of the QUBIC (Q & U Bolometric Interferometer for Cosmology) instrument, carried out at Astroparticle Physics and Cosmology (APC) in Paris. Exploiting the novel concept called bolometric interferometry, QUBIC is designed to measure the CMB polarization at 150 and 220 GHz from a high altitude site at Alto Chorillo, Argentina. The prototype model called QUBIC Technological Demonstrator (QUBIC-TD) operates in a single frequency band (150 GHz) and with a reduced number of baselines, but it contains all the elements of the QUBIC instrument in its final configuration. The test campaign included measurements of the synthesized beam and of the polarization performance, as well as a verification of the interference fringe pattern. A modulated, frequency-tunable millimetre-wave source was placed in the telescope far-field and was used to simulate a point source. The QUBIC-TD field of view was scanned across the source to produce beam maps. Our measurements confirm the frequency-dependent behaviour of the beam profile, which gives QUBIC the possibility to do spectral imaging. The measured polarization performance indicates a cross-polarization leakage less than 0.6%. We also successfully tested the polarization modulation system, which is provided by a rotating half wave plate. We demonstrate the full mapmaking pipeline using data from this measurement campaign, effectively giving an end-to-end checkout of the entire QUBIC system, including all hardware subsystems, their interfaces, and the software to operate the whole system and run the analysis. Our results confirm the viability of bolometric interferometry for measurements of the CMB polarization.

Additional Information

© 2022 IOP Publishing Ltd and Sissa Medialab. Received 24 November 2020; Accepted 14 March 2022; Published 21 April 2022. QUBIC is funded by the following agencies. France: ANR (Agence Nationale de la Recherche) 2012 and 2014, DIM-ACAV (Domaine d'Interet Majeur-Astronomie et Conditions d'Apparition de la Vie), CNRS/IN2P3 (Centre national de la recherche scientifique/Institut national de physique nucléaire et de physique des particules), CNRS/INSU (Centre national de la recherche scientifique/Institut national et al de sciences de l'univers). Italy: CNR/PNRA (Consiglio Nazionale delle Ricerche/Programma Nazionale Ricerche in Antartide) until 2016, INFN (Istituto Nazionale di Fisica Nucleare) since 2017. Argentina: MINCyT (Ministerio de Ciencia, Tecnología e Innovación), CNEA (Comisión Nacional de Energía Atómica), CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas). D. Burke and J.D. Murphy acknowledge funding from the Irish Research Council under the Government of Ireland Postgraduate Scholarship Scheme. D. Gayer and S. Scully acknowledge funding from the National University of Ireland, Maynooth. D. Bennett acknowledges funding from Science Foundation Ireland.

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Accepted Version - 2008.10056.pdf

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Additional details

Created:
August 22, 2023
Modified:
October 24, 2023