QUBIC: the Q and U bolometric interferometer for cosmology

作者：Créidhe O'Sullivan, Giorgio Amico, D. Auguste, J. Aumont, S. Banfi, Gustavo Barbarán, P Battaglia, E. S. Battistelli, A. Baù, B. Bélier, Laurent Bergé, J.-P. Bernard, Marco Bersanelli, Marie-Anne Bigot-Sazy, N. Bleurvacq, J. Bonaparte, J. Bonis, Guillaume Bordier, Eric Bréelle, Emory F. Bunn, David Burke, D. Buzi, A. Buzzelli, F. Cavaliere, P. Chanial, Claude Chapron, Romain Charlassier, F. Columbro, Gabriele Coppi, A. Coppolecchia, F. Couchot, Rocco D’Agostino, Giuseppe D’Alessandro, Paolo de Bernardis, G. de Gasperis, M. De Leo, M. De Petris, A. Di Donato, L. Dumoulin, V. Haynes, Sophie Henrot-Versillé, Alberto Etchegoyen, A. Fasciszewski, C. Franceschet, M.M. Gamboa Lerena, B. Garćıa, X. Garrido, M. Gaspard, Amanda Gault, D. Gayer, Massimo Gervasi, M. Giard, Y. Giraud–Héraud, M. Gómez Berisso, Manuel González, M. Gradziel, L. Grandsire, E. Guerrard, J.–Ch. Hamilton, Diego Harari, D. Hoang, Federico Incardona, E. Jules, Jean Kaplan, Andrei Korotkov, C. Kristukat, D. Bennett, Luca Lamagna, Sotiris Loucatos, Thibaut Louis, A. E. Lowitz, Vladimir Lukovic, R. Luterstein, B. Maffei, S. Marnieros, Silvia Masi, Angelo Mattei, Andrew May, M. McCulloch, Maria Clementina Medina, L. Mele, S. J. Melhuish, A. Mennella, Ludovic Montier, Luis Mundo, J. Anthony Murphy, J.D. Murphy, Emiliano Olivieri, A. Paiella, François Pajot, Andrea Passerini, Hernan Pastoriza, Alessandro Pelosi, C. Perbost, O. Perdereau, F. Pezzotta, F. Piacentini, Michel Piat, Lucio Piccirillo, G. Pisano, G. Polenta, D. Prêle, Roberto Puddu, D. Rambaud, P. Ringegni, Gustavo E. Romero, Maria Salatino, A. Schillaci, Claudia G. Scóccola, Stephen Scully, Sebastiano Spinelli, Mikhail Stolpovskiy, Federico Suarez, A. Tartari, Jean-Pierre Thermeau, Peter Timbie, S. Torchinsky, M. Tristram, V. Truongcanh, C. Tucker, Gregory S. Tucker, S. Vanneste, Daniele Viganò, N. Vittorio, Fabrice Voisin, Bob Watson, F. Wicek, M. Zannoni, Antonio Zullo, Peter A. R. Ade · 年份：2018 · DOI：10.1117/12.2313332 · 被引用次数：7 · 研究领域：Superconducting and THz Device Technology、Radio Astronomy Observations and Technology、Scientific Research and Discoveries

QUBIC, the Q & U Bolometric Interferometer for Cosmology, is a novel ground-based instrument that has been designed to measure the extremely faint B-mode polarisation anisotropy of the cosmic microwave background at intermediate angular scales (multipoles of 𝑙 = 30 − 200). Primordial B-modes are a key prediction of Inflation as they can only be produced by gravitational waves in the very early universe. To achieve this goal, QUBIC will use bolometric interferometry, a technique that combines the sensitivity of an imager with the systematic error control of an interferometer. It will directly observe the sky through an array of 400 back-to-back entry horns whose signals will be superimposed using a quasi-optical beam combiner. The resulting interference fringes will be imaged at 150 and 220 GHz on two focal planes, each tiled with NbSi Transition Edge Sensors, cooled to 320 mK and read out with time-domain multiplexing. A dichroic filter placed between the optical combiner and the focal planes will select the two frequency bands. A very large receiver cryostat will cool the optical and detector stages to 40 K, 4 K, 1 K and 320 mK using two pulse tube coolers, a novel 4He sorption cooler and a double-stage 3He/4He sorption cooler. Polarisation modulation and selection will be achieved using a cold stepped half-wave plate (HWP) and polariser, respectively, in front of the sky-facing horns. A key feature of QUBIC’s ability to control systematic effects is its ‘self-calibratio...