QUBIC VIII: Optical design and performance
Abstract
The Q and U Bolometric Interferometer for Cosmology (QUBIC) is a ground-based experiment that aims to detect B-mode polarisation anisotropies 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 there-emitted beams from 400 aperture feedhorns on two focal planes. A shielding system composedof 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.
Cite
@article{arxiv.2008.10119,
title = {QUBIC VIII: Optical design and performance},
author = {C. O'Sullivan and M. De Petris and G. Amico and E. S. Battistelli and D. Burke and D. Buzi and C. Chapron and L. Conversi and G. D'Alessandro and P. de Bernardis and M. De Leo and D. Gayer and L. Grandsire and J. -Ch. Hamilton and S. Marnieros and S. Masi and A. Mattei and A. Mennella and L. Mousset and J. D. Murphy and A. Pelosi and M. Perciballi and M. Piat and S. Scully and A. Tartari and S. A. Torchinsky and F. Voisin and M. Zannoni and A. Zullo and P. Ade and J. G. Alberro and A. Almela and L. H. Arnaldi and D. Auguste and J. Aumont and S. Azzoni and S. Banfi and B. Bélier and A. Bau and D. Bennett and L. Berge and J. -Ph. Bernard and M. Bersanelli and M. -A. Bigot-Sazy and J. Bonaparte and J. Bonis and E. Bunn and F. Cavaliere and P. Chanial and R. Charlassier and A. C. Cobos Cerutti and F. Columbro and A. Coppolecchia and G. De Gasperis and S. Dheilly and C. Duca and L. Dumoulin and A. Etchegoyen and A. Fasciszewski and L. P. Ferreyro and D. Fracchia and C. Franceschet and M. M. Gamboa Lerena and K. M. Ganga and B. García and M. E. García Redondo and M. Gaspard and M. Gervasi and M. Giard and V. Gilles and Y. Giraud-Heraud and M. GomezBerisso and M. Gonzalez and M. Gradziel and M. R. Hampel and D. Harari and S. Henrot-Versille and F. Incardona and E. Jules and J. Kaplan and C. Kristukat and L. Lamagna and S. Loucatos and T. Louis and B. Maffei and W. Marty and A. May and M. McCulloch and L. Mele and D. Melo and L. Montier and L. M. Mundo and J. A. Murphy and F. Nati and E. Olivieri and C. Oriol and A. Paiella and F. Pajot and A. Passerini and H. Pastoriza and C. Perbost and F. Pezzotta and F. Piacentini and L. Piccirillo and G. Pisano and M. Platino and G. Polenta and D. Prele and R. Puddu and D. Rambaud and P. Ringegni and G. E. Romero and E. Rasztocky and J. M. Salum and A. Schillaci and C. Scoccola and S. Spinelli and G. Stankowiak and M. Stolpovskiy and A. D. Supanitsky and J. -P. Thermeau and P. Timbie and M. Tomasi and G. Tucker and C. Tucker and D. Vigano and N. Vittorio and F. Wicek and M. Wright},
journal= {arXiv preprint arXiv:2008.10119},
year = {2022}
}
Comments
Part of a series of 8 papers on QUBIC to be published in a special issue of JCAP. Accepted for publication