Thermal architecture for the QUBIC cryogenic receiver

MAY, A.J.; CHAPRON, C.; COPPI, G.; D'ALESSANDRO, G.; DE BERNARDIS, P.; MASI, S.; MELHUISH, S.; PIAT, M.; PICCIRILLO, L.; SCHILLACI, A.; THERMEAU, J.-P.; ADE, P.; AMICO, G.; AUGUSTE, D.; AUMONT, J.; BANFI, S.; BARBARÁN, G.; BATTAGLIA, P.; BATTISTELLI, E.; BAÙ, A.; BÉLIER, B.; BENNETT, D.; BERGÉ, L.; BERNARD, J.-PH.; BERSANELLI, M.; BIGOT-SAZY, M.-A.; BLEURVACQ, N.; BONAPARTE, J.; BONIS, J.; BORDIER, G.; BRÉELLE, E.; BUNN, E.; BURKE, D.; BUZI, D.; BUZZELLI, A.; CAVALIERE, F.; CHANIAL, P.; CHARLASSIER, R.; COLUMBRO, F.; COPPOLECCHIA, A.; COUCHOT, F.; D'AGOSTINO, R.; DE GASPERIS, G.; DE LEO, M.; DE PETRIS, M.; DI DONATO, A.; DUMOULIN, L.; ETCHEGOYEN, A.; FASCISZEWSKI, A.; FRANCESCHET, C.; GAMBOA LERENA, M.M.; GARCÍA, B.; GARRIDO, X.; GASPARD, M.; GAULT, A.; GAYER, D.; GERVASI, M.; GIARD, M.; GIRAUD-HÉRAUD, Y.; GÓMEZ BERISSO, M.; GONZÁLEZ, M.; GRADZIEL, M.; GRANDSIRE, L.; GUERRARD, E.; HAMILTON, J.-CH.; HARARI, D.; HAYNES, V.; HENROT-VERSILLÉ, S.; HOANG, D.T.; INCARDONA, F.; JULES, E.; KAPLAN, J.; KOROTKOV, A.; KR

SPIE

SPIE

Año: 2018 vol. 0708

0277-786X

QUBIC, the QU Bolometric Interferometer for Cosmology, is a novel forthcoming instrument to measure the B-mode polarization anisotropy of the Cosmic Microwave Background. The detection of the B-mode signal will be extremely challenging; QUBIC has been designed to address this with a novel approach, namely bolometric interferometry. The receiver cryostat is exceptionally large and cools complex optical and detector stages to 40 K, 4 K, 1 K and 350 mK using two pulse tube coolers, a novel 4He sorption cooler and a double-stage 3He/4He sorption cooler. We discuss the thermal and mechanical design of the cryostat, modelling and thermal analysis, and laboratory cryogenic testing.