Q & U Bolometric Interferometer for Cosmology (QUBIC) is an international ground-based experiment dedicated in the measurement of the polarized fluctuations of the Cosmic Microwave Background. It is based on bolometric interferometry, an original detection technique which combines the immunity to systematic effects of an interferometer 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 350 mK.The voltage-biased TESs are read out with time domain multiplexing based on Superconducting QUantum Interference Devices at 1 K and a novel SiGe application-specific integrated circuit at 60 K allowing to reach an unprecedented multiplexing factor equal to 128. The QUBIC experiment is currently being characterized in the laboratory with a reduced number 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.

Piat, M., Bélier, B., Bergé, L., Bleurvacq, N., Chapron, C., Dheilly, S., et al. (2020). QUBIC: Using NbSi TESs with a Bolometric Interferometer to Characterize the Polarization of the CMB. JOURNAL OF LOW TEMPERATURE PHYSICS, 200(5-6), 363-373 [10.1007/s10909-020-02445-y].

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

Banfi, S.;Coppi, G.;Gervasi, M.;Nati, F.;Passerini, A.;Zannoni, M.;
2020

Abstract

Q & U Bolometric Interferometer for Cosmology (QUBIC) is an international ground-based experiment dedicated in the measurement of the polarized fluctuations of the Cosmic Microwave Background. It is based on bolometric interferometry, an original detection technique which combines the immunity to systematic effects of an interferometer 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 350 mK.The voltage-biased TESs are read out with time domain multiplexing based on Superconducting QUantum Interference Devices at 1 K and a novel SiGe application-specific integrated circuit at 60 K allowing to reach an unprecedented multiplexing factor equal to 128. The QUBIC experiment is currently being characterized in the laboratory with a reduced number 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.
Articolo in rivista - Articolo scientifico
CMB; TDM; TESs;
Cosmology, Instrumentation, Polarization, Cosmic Microwave Background, Cryogenics, Bolometers
English
27-apr-2020
2020
200
5-6
363
373
none
Piat, M., Bélier, B., Bergé, L., Bleurvacq, N., Chapron, C., Dheilly, S., et al. (2020). QUBIC: Using NbSi TESs with a Bolometric Interferometer to Characterize the Polarization of the CMB. JOURNAL OF LOW TEMPERATURE PHYSICS, 200(5-6), 363-373 [10.1007/s10909-020-02445-y].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/273296
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