Abstract
The BICEP3 CMB Polarimeter is a small-Aperture refracting telescope located at the South Pole and is specifically designed to search for the possible signature of inflationary gravitational waves in the Cosmic Microwave Background (CMB). The experiment measures polarization on the sky by differencing the signal of co-located, orthogonally polarized antennas coupled to Transition Edge Sensor (TES) detectors. We present precise measurements of the absolute polarization response angles and polarization efficiencies for nearly all of BICEP3's ∼800 functioning polarization-sensitive detector pairs from calibration data taken in January 2018. Using a Rotating Polarized Source (RPS), we mapped polarization response for each detector over a full 360 degrees of source rotation and at multiple telescope boresight rotations from which per-pair polarization properties were estimated. In future work, these results will be used to constrain signals predicted by exotic physical models such as Cosmic Birefringence.
Original language | English (US) |
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Title of host publication | Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X |
Editors | Jonas Zmuidzinas, Jian-Rong Gao |
Publisher | SPIE |
ISBN (Electronic) | 9781510636934 |
DOIs | |
State | Published - 2020 |
Event | Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X 2020 - Virtual, Online, United States Duration: Dec 14 2020 → Dec 22 2020 |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
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Volume | 11453 |
ISSN (Print) | 0277-786X |
ISSN (Electronic) | 1996-756X |
Conference
Conference | Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X 2020 |
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Country/Territory | United States |
City | Virtual, Online |
Period | 12/14/20 → 12/22/20 |
Bibliographical note
Publisher Copyright:© COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Keywords
- Calibration
- Cosmic Microwave Background
- Polarization