Year: 2022
Type: article
Abstract: We present the design, manufacturing and performance of the horn-switch system developed for the technological demonstrator of QUBIC (the Q&U Bolometric Interferometer for Cosmology). This system consists of 64 back-to-back dual-band (150 GHz and 220 GHz) corrugated feed-horns interposed with mechanical switches used to select desired baselines during the instrument self-calibration. We manufactured the horns in aluminum platelets milled by photo-chemical etching and mechanically tightened with screws. The switches are based on steel blades that open and close the waveguide between the back-to-back horns and are operated by miniaturized electromagnets. The measured electromagnetic performance of the feedhorns agrees with simulations. In particular we obtained a return loss around -20 dB up to 230 GHz and beam patterns in agreement with single-mode simulations down to -30 dB. The switches for this prototype were designed and built for the 150 GHz band. In this frequency range we find return and insertion losses consistent with expectations (<-25 dB and ∼-0.1 dB, respectively) and an isolation larger than 70 dB. In this paper we also show the current development status of the feedhorn-switch system for the QUBIC full instrument, based on an array of 400 horn-switch assemblies.
Authors: F. Cavaliere, A. Mennella, M. Zannoni, P. Battaglia, E.S. Battistelli, P. de Bernardis, D. Burke, G. D'Alessandro, M. De Petris, C. Franceschet, L. Grandsire, J.-Ch. Hamilton, B. Maffei, E. Manzan, S. Marnieros, S. Masi, C. O'Sullivan, A. Passerini, F. Pezzotta, M. Piat, A. Tartari, S.A. Torchinsky, D. Viganò, F. Voisin, P. Ade, J.G. Alberro, A. Almela, G. Amico, L.H. Arnaldi, D. Auguste, J. Aumont, S. Azzoni, S. Banfi, A. Baù, B. Bélier, D. Bennett, L. Bergé, J.-Ph. Bernard, M. Bersanelli, M.-A. Bigot-Sazy, J. Bonaparte, J. Bonis, E. Bunn, D. Buzi, P. Chanial, C. Chapron, R. Charlassier, A.C. Cobos Cerutti, F. Columbro, A. Coppolecchia, G. De Gasperis, M. De Leo, S. Dheilly, C. Duca, L. Dumoulin, A. Etchegoyen, A. Fasciszewski, L.P. Ferreyro, D. Fracchia, M.M. Gamboa Lerena, K.M. Ganga, B. García, M.E. García Redondo, M. Gaspard, D. Gayer, M. Gervasi, M. Giard, V. Gilles, Y. Giraud-Heraud, M. Gómez Berisso, M. González, M. Gradziel, M.R. Hampel, D. Harari, S. Henrot-Versillé, F. Incardona, E. Jules, J. Kaplan, C. Kristukat, L. Lamagna, S. Loucatos, T. Louis, W. Marty, A. Mattei, A. May, M. McCulloch, L. Mele, D. Melo, L. Montier, L. Mousset, L.M. Mundo, J.A. Murphy, J.D. Murphy, F. Nati, E. Olivieri, C. Oriol, A. Paiella, F. Pajot, H. Pastoriza, A. Pelosi, C. Perbost, M. Perciballi, F. Piacentini, L. Piccirillo, G. Pisano, M. Platino, G. Polenta, D. Prêle, R. Puddu, D. Rambaud, E. Rasztocky, P. Ringegni, G.E. Romero, J.M. Salum, A. Schillaci, C.G. Scóccola, S. Scully, S. Spinelli, G. Stankowiak, M. Stolpovskiy, A.D. Supanitsky, J.-P. Thermeau, P. Timbie, M. Tomasi, C. Tucker, G. Tucker, N. Vittorio, F. Wicek, M. Wright, A. Zullo
Institutions: University of Milan, Istituto Nazionale di Fisica Nucleare, Sezione di Milano, Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca, University of Milano-Bicocca, National Institute for Astrophysics, Istituto Nazionale di Fisica Nucleare, Sezione di Roma I, Sapienza University of Rome, National University of Ireland, Maynooth, Centre National de la Recherche Scientifique, Université Paris Cité, Institut d'Astrophysique Spatiale, Université Paris-Saclay, Institut National de Physique Nucléaire et de Physique des Particules, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, Université Paris Sciences et Lettres, Observatoire de Paris, Cardiff University, Universidad Nacional de La Plata, Consejo Nacional de Investigaciones Científicas y Técnicas, National University of General San Martín, Instituto de Tecnologías en Detección y Astropartículas, Balseiro Institute, Bariloche Atomic Centre, Institut de Recherche en Astrophysique et Planétologie, University of Oxford, Centre de Nanosciences et de Nanotechnologies, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, University of Richmond, University of Rome Tor Vergata, University of Surrey, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA Paris-Saclay - Etablissement de Saclay, CEA Paris-Saclay, Institut de Recherche sur les Lois Fondamentales de l'Univers, University of Manchester, Agenzia Spaziale Italiana, Pontificia Universidad Católica de Chile, Instituto Argentino de Radioastronomía, California Institute of Technology, Institute of Technology Carlow, University of Wisconsin–Madison, Brown University
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funders: National University of Ireland, Science Foundation Ireland, National University of Ireland, Maynooth, Agence Nationale de la Recherche, Irish Research Council, Comisión Nacional de Energía Atómica, Gobierno de Argentina, Consejo Nacional de Investigaciones Científicas y Técnicas, Ministerio de Ciencia, Tecnología e Innovación Productiva, Consiglio Nazionale delle Ricerche, Centre National de la Recherche Scientifique, Istituto Nazionale di Fisica Nucleare, Institut national des sciences de l'Univers, Labex UnivEarthS, Institut National de Physique Nucléaire et de Physique des Particules
OpenAlex ID: W3081022951