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13 December 2020 First year status and performance of the POLARBEAR-2a cosmic microwave background instrument
John Groh
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Proceedings Volume 11445, Ground-based and Airborne Telescopes VIII; 114451X (2020) https://doi.org/10.1117/12.2562982
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only
Abstract
POLARBEAR-2a (PB-2a) is the first of three telescopes comprising the Simons Array, a cosmic microwave background (CMB) polarization observatory sensitive over a wide range of wavelengths and angular scales. The Simons Array will have a broad science reach, including primordial gravitational wave background searches and neutrino physics constraints. PB-2a, which began observing from northern Chile in 2018, has enabled many of the technologies necessary for the full operation of the Simons Array. Here, we describe the first year on-sky characterization and operation of PB-2a along with recent upgrades which improve upon the sensitivity, stability, and operability of the detector array.
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John Groh "First year status and performance of the POLARBEAR-2a cosmic microwave background instrument", Proc. SPIE 11445, Ground-based and Airborne Telescopes VIII, 114451X (13 December 2020); https://doi.org/10.1117/12.2562982
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KEYWORDS
Microwave radiation
Detector arrays
Cryogenics
Telescopes
Anisotropy
Lenses
Modulation
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