Thermal architecture for the QUBIC cryogenic receiver
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX. Vol. 10708. International Society for Optics and Photonics, 2018 QUBIC, the QU Bolometric Interferometer for Cosmology, is a novel forthcoming instrument to measure the B-mode polarization anisotropy of the C...
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Sprache: | eng |
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Zusammenfassung: | Millimeter, Submillimeter, and Far-Infrared Detectors and
Instrumentation for Astronomy IX. Vol. 10708. International Society for
Optics and Photonics, 2018 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. |
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DOI: | 10.48550/arxiv.1811.02296 |