QUBIC: Using NbSi TESs with a Bolometric Interferometer to Characterize the Polarization of the CMB

PIAT, M.; BLEURVACQ, N.; DUMOULIN, L.; HAMILTON, J.-CH.; MARNIEROS, S.; OLIVIERI, E.; PRÊLE, D.; STANKOWIAK, G.; VOISIN, F.; ALMELA, A.; AUGUSTE, D.; BANFI, S.; BAÙ, A.; BERSANELLI, M.; BONIS, J.; BURKE, D.; CAVALIERE, F.; COLUMBRO, F.; D?ALESSANDRO, G.; DE LEO, M.; ETCHEGOYEN, A.; FRACCHIA, D.; GANGA, K.; GASPARD, M.; GERVASI, M.; GIRAUD-HERAUD, Y.; HARARI, D.; JULES, E.; KRISTUKAT, C.; LOUIS, T.; MASI, S.; MCCULLOCH, M.; MELHUISH, S.; MUNDO, L.M.; NATI, F.; PAJOT, F.; PELOSI, A.; PIACENTINI, F.; PLATINO, M.; RINGEGNI, P.; SCHILLACI, A.; SPINELLI, S.; TARTARI, A.; TUCKER, C.; VIGANÒ, D.; WICEK, F.; BERGÉ, L.; DHEILLY, S.; GRANDSIRE, L.; HOANG, D.T.; MONTIER, L.; PERBOST, C.; SALATINO, M.; TORCHINSKY, S.; ALBERRO, J.G.; ARNALDI, L.H.; AZZONI, S.; BATTISTELLI, E.S.; BERNARD, J.-PH.; BONAPARTE, J.; BUNN, E.; BUZZELLI, A.; CHARLASSIER, R.; COPPOLECCHIA, A.; DE GASPERIS, G.; DI DONATO, A.; FERREYRO, L.P.; GAMBOA LERENA, M.M.; GARCÍA REDONDO, M.E.; GAYER, D.; GILLES, V.; GRADZIEL, M.; INCARDONA, F.; KOROTKOV, A.;

JOURNAL OF LOW TEMPERATURE PHYSICS

SPRINGER/PLENUM PUBLISHERS

Año: 2020 vol. 200 p. 363 - 373

0022-2291

QUBIC (Q & U Bolometric Interferometer for Cosmology) is an international ground-based experiment dedicated in the measurement of the polarized fluctuations of the Cosmic Microwave Background (CMB). It is based on bolometric interferometry, an origi- nal detection technique which combine the immunity to systematic effects of an interferom- eter with the sensitivity of low temperature incoherent detectors. QUBIC will be deployed in Argentina, at the Alto Chorrillos mountain site near San Antonio de los Cobres, in the Salta province.The QUBIC detection chain consists in 2048 NbSi Transition Edge Sensors (TESs) cooled to 350mK.The voltage-biased TESs are read out with Time Domain Multiplexing based on Superconducting QUantum Interference Devices (SQUIDs) at 1 K and a novel SiGe Application-Specific Integrated Circuit (ASIC) at 60 K allowing to reach an unprece- dented multiplexing (MUX) factor equal to 128.The QUBIC experiment is currently being characterized in the lab with a reduced num- ber of detectors before upgrading to the full instrument. I will present the last results of this characterization phase with a focus on the detectors and readout system.