Published December 13, 2020 | Version Published
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Calibration of QUBIC: The Q and U bolometric interferometer for cosmology

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Abstract

QUBIC (a Q and U Bolometric Interferometer for Cosmology) is a next generation cosmology experiment designed to detect the B-mode polarisation of the Cosmic Microwave Background (CMB). A B-mode detection is hard evidence of Inflation in the ΛCDM model. QUBIC aims to accomplish this by combining novel technologies to achieve the sensitivity required to detect the faint B-mode signal. QUBIC uses technologies such as a rotating half-wave plate, cryogenics, interferometric horns with self-calibration switches and transition edge sensor bolometers. A Technical Demonstrator (TD) is currently being calibrated in APC in Paris before observations in Argentina in 2021. As part of the calibration campaign, the spectral response of the TD is measured to test and validate QUBIC's spectro-imaging capability. This poster gives an overview of the methods used to measure the spectral response and a comparison of the instrument data with theoretical predictions and optical simulations.

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© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE).

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Eprint ID
107652
Resolver ID
CaltechAUTHORS:20210122-081239820

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Created
2021-01-22
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Updated
2021-11-16
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Series Name
Proceedings of SPIE
Series Volume or Issue Number
11453