The Simons Observatory (SO) is a cosmic microwave background survey experiment that includes small-aperture telescopes (SATs) observing from an altitude of 5200 m in the Atacama Desert in Chile. The SO SATs will cover six spectral bands between 27 and 280 GHz to search for primordial B-modes to a sensitivity of σ(r) = 0.002, with quantified systematic errors well below this value. Each SAT is a self-contained cryogenic telescope with a 35° field of view, 42 cm diameter optical aperture, 40 K half-wave plate, 1 K refractive optics, and <0.1 K focal plane that holds >12,000 transition edge sensor detectors. We describe the nominal design of the SATs and present details about the integration and testing for one operating at 93 and 145 GHz.

Galitzki, N., Tsan, T., Spisak, J., Randall, M., Silva-Feaver, M., Seibert, J., et al. (2024). The Simons Observatory: Design, Integration, and Testing of the Small Aperture Telescopes. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 274(2) [10.3847/1538-4365/ad64c9].

The Simons Observatory: Design, Integration, and Testing of the Small Aperture Telescopes

Coppi G.;Nati F.;
2024

Abstract

The Simons Observatory (SO) is a cosmic microwave background survey experiment that includes small-aperture telescopes (SATs) observing from an altitude of 5200 m in the Atacama Desert in Chile. The SO SATs will cover six spectral bands between 27 and 280 GHz to search for primordial B-modes to a sensitivity of σ(r) = 0.002, with quantified systematic errors well below this value. Each SAT is a self-contained cryogenic telescope with a 35° field of view, 42 cm diameter optical aperture, 40 K half-wave plate, 1 K refractive optics, and <0.1 K focal plane that holds >12,000 transition edge sensor detectors. We describe the nominal design of the SATs and present details about the integration and testing for one operating at 93 and 145 GHz.
Articolo in rivista - Articolo scientifico
CMB
English
24-set-2024
2024
274
2
33
none
Galitzki, N., Tsan, T., Spisak, J., Randall, M., Silva-Feaver, M., Seibert, J., et al. (2024). The Simons Observatory: Design, Integration, and Testing of the Small Aperture Telescopes. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 274(2) [10.3847/1538-4365/ad64c9].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/519819
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