O'Sullivan, Créidhe and De Petris, M. and Amico, G. and Battistelli, E.S. and de Bernardis, P. and Burke, D. and Buzi, D. and Chapron, C. and Conversi, L. and D'Alessandro, G. and De Leo, M. and Gayer, D. and Grandsire, L. and Hamilton, J.-Ch. and Marnieros, S. and Masi, S. and Mattei, A. and Mennella, A. and Mousset, L. and Murphy, J.D. and Pelosi, A. and Perciballi, M. and Piat, M. and Scully, S. and Tartari, A. and Torchinsky, S.A. and Voisin, F. and Zannoni, M. and Zullo, A. and Ade, P. and Alberro, J.G. and Almela, A. and Arnaldi, L.H. and Auguste, D. and Aumont, J. and Azzoni, S. and Banfi, S. and Baù, A. and Bélier, B. and Bennett, D. and Bergé, L. and Bernard, J.-Ph. and Bersanelli, M. and Bigot-Sazy, M.-A. and Bonaparte, J. and Bonis, J. and Bunn, E. and Cavaliere, F. and Chanial, P. and Charlassier, R. and Cobos Cerutti, A.C. and Columbro, F. and Coppolecchia, A. and De Gasperis, G. and Dheilly, S. and Duca, C. and Dumoulin, L. and Etchegoyen, A. and Fasciszewski, A. and Ferreyro, L.P. and Fracchia, D. and Franceschet, C. and Gamboa Lerena, M.M. and Ganga, K.M. and García, B. and García Redondo, M.E. and Gaspard, M. and Gervasi, M. and Giard, M. and Gilles, V. and Giraud-Heraud, Y. and Gómez Berisso, M. and González, M. and Gradziel, M. and Hampel, M.R. and Harari, D. and Henrot-Versillé, S. and Incardona, F. and Jules, E. and Kaplan, J. and Kristukat, C. and Lamagna, L. and Loucatos, S. and Louis, T. and Maffei, B. and Marty, W. and May, A. and McCulloch, M. and Mele, L. and Melo, D. and Montier, L. and Mundo, L.M. and Murphy, J.A. and Nati, F. and Olivieri, E. and Oriol, C. and Paiella, A. and Pajot, F. and Passerini, A. and Pastoriza, H. and Perbost, C. and Pezzotta, F. and Piacentini, F. and Piccirillo, L. and Pisano, G. and Platino, M. and Polenta, G. and Prêle, D. and Puddu, R. and Rambaud, D. and Rasztocky, E. and Ringegni, P. and Romero, G.E. and Salum, J.M. and Schillaci, A. and Scóccola, C.G. and Spinelli, S. and Stankowiak, G. and Stolpovskiy, M. and Supanitsky, A.D. and Thermeau, J.-P. and Timbie, P. and Tomasi, M. and Tucker, C. and Tucker, G. and Viganò, D. and Vittorio, N. and Wicek, F. and Wright, M. (2022) QUBIC VIII: Optical design and performance. Journal of Cosmology and Astroparticle Physics, 41. pp. 1-34. ISSN 1475-7516

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Abstract

The Q and U Bolometric Interferometer for Cosmology (QUBIC) is a ground-based experiment that aims to detect B-mode polarization anisotropies [1] in the CMB at angular scales around the ℓ ≃100 recombination peak. Systematic errors make ground-based observations of B modes at millimetre wavelengths very challenging and QUBIC mitigates these problems in a somewhat complementary way to other existing or planned experiments using the novel technique of bolometric interferometry. This technique takes advantage of the sensitivity of an imager and the systematic error control of an interferometer. A cold reflective optical combiner superimposes the re-emitted beams from 400 aperture feedhorns on two focal planes. A shielding system composed of a fixed groundshield, and a forebaffle that moves with the instrument, limits the impact of local contaminants. The modelling, design, manufacturing and preliminary measurements of the optical components are described in this paper.

Item Type:	Article
Keywords:	CMBR detectors; CMBR experiments; CMBR polarisation; gravitational waves; CMBR polarization;
Academic Unit:	Faculty of Science and Engineering > Experimental Physics
Item ID:	17824
Identification Number:	https://doi.org/10.1088/1475-7516/2022/04/041
Depositing User:	Dr. Créidhe O'Sullivan
Date Deposited:	14 Nov 2023 11:44
Journal or Publication Title:	Journal of Cosmology and Astroparticle Physics
Publisher:	IOP Publishing
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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