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The QUBIC instrument for CMB polarization measurements

Abstract:
Measurements of cosmic microwave background (CMB) polarization may reveal the presence of a background of gravitational waves produced during cosmic inflation, providing thus a test of inflationary models. The Q&U Bolometric Interferometer for Cosmology (QUBIC) is an experiment designed to measure the CMB polarization. It is based on the novel concept of bolometric interferometry, which combines the sensitivity of bolometric detectors with the properties of beam synthesis and control of calibration offered by interferometers. To modulate and extract the input polarized signal of the CMB, QUBIC exploits Stokes polarimetry based on a rotating half-wave plate (HWP). In this work, we illustrate the design of the QUBIC instrument, focusing on the polarization modulation system, and we present preliminary results of beam calibrations and the performance of the HWP rotator at 300 K.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1088/1742-6596/1548/1/012016

Authors

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Astrophysics
Oxford college:
St Cross College
Role:
Author
ORCID:
0000-0002-8132-4896

Publisher:
IOP Publishing
Journal:
Journal of Physics: Conference Series More from this journal
Volume:
1548
Issue:
1
Article number:
012016
Publication date:
2020-05-28
Acceptance date:
2020-04-24
Event title:
10th Young Researcher Meeting
Event location:
Rome, Italy
Event start date:
2019-06-18
Event end date:
2019-06-21
DOI:
EISSN:
1742-6596
ISSN:
1742-6588

Language:
English
Keywords:
Pubs id:
1177383
Local pid:
pubs:1177383
Deposit date:
2021-09-09
ARK identifier:

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