期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 4, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2022/04/041
关键词
CMBR detectors; CMBR experiments; CMBR polarisation; gravitational waves and CMBR polarization
资金
- France: ANR (Agence Nationale de la Recherche)
- France: DIM-ACAV (Domaine d'Interet Majeur-Astronomie et Conditions d'Apparition de la Vie)
- France: CNRS/IN2P3 (Centre national de la recherche scientifique/Institut national de physique nucleaire et de physique des particules)
- France: CNRS/INSU (Centre national de la recherche scientifique/Institut national et al. de sciences de l'univers)
- Italy: CNR/PNRA (Consiglio Nazionale delle Ricerche/Programma Nazionale Ricerche in Antartide)
- Italy: INFN (Istituto Nazionale di Fisica Nucleare)
- Argentina: MINCyT (Ministerio de Ciencia, Tecnologia e Innovacion)
- Argentina: CNEA (Comision Nacional de Energia Atomica)
- Argentina: CONICET (Consejo Nacional de Investigaciones Cientificas y Tecnicas)
- Irish Research Council under the Government of Ireland Postgraduate Scholarship Scheme
- National University of Ireland
- Science Foundation Ireland
QUBIC is a ground-based experiment aiming to detect B-mode polarization anisotropies in the CMB. It mitigates the systematic errors of ground-based observations using the novel technique of bolometric interferometry, which combines the sensitivity of an imager with the error control of an interferometer.
The Q and U Bolometric Interferometer for Cosmology (QUBIC) is a ground-based experiment that aims to detect B-mode polarization anisotropies [1] in the CMB at angular scales around the l similar or equal to 100 recombination peak. Systematic errors make ground-based observations of B modes at millimetre wavelengths very challenging and QUBIC mitigates these problems in a somewhat complementary way to other existing or planned experiments using the novel technique of bolometric interferometry. This technique takes advantage of the sensitivity of an imager and the systematic error control of an interferometer. A cold reflective optical combiner superimposes the re-emitted beams from 400 aperture feedhorns on two focal planes. A shielding system composed of a fixed groundshield, and a forebaffle that moves with the instrument, limits the impact of local contaminants. The modelling, design, manufacturing and preliminary measurements of the optical components are described in this paper.
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