The Simons Observatory: Development and Optical Evaluation of Achromatic Half-Wave Plates
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| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866916126229790720 |
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| author | Sugiyama, Junna Terasaki, Tomoki Sakaguri, Kana Bixler, Bryce Sakurai, Yuki Arnold, Kam Crowley, Kevin T. Datta, Rahul Galitzki, Nicholas Hasegawa, Masaya Johnson, Bradley R. Keating, Brian Kusaka, Akito Lee, Adrian Matsumura, Tomotake Mcmahon, Jeffrey Silva-Feaver, Maximiliano Wang, Yuhan Yamada, Kyohei |
| author_facet | Sugiyama, Junna Terasaki, Tomoki Sakaguri, Kana Bixler, Bryce Sakurai, Yuki Arnold, Kam Crowley, Kevin T. Datta, Rahul Galitzki, Nicholas Hasegawa, Masaya Johnson, Bradley R. Keating, Brian Kusaka, Akito Lee, Adrian Matsumura, Tomotake Mcmahon, Jeffrey Silva-Feaver, Maximiliano Wang, Yuhan Yamada, Kyohei |
| contents | The Simons Observatory (SO) experiment is a cosmic microwave background (CMB) experiment located in the Atacama Desert, Chile. The SO' s small aperture telescopes (SATs) consist of three telescopes designed for precise CMB polarimetry at large angular scales. Each SAT uses a cryogenic rotating half-wave plate (HWP) as a polarization modulator to mitigate atmospheric 1/f noise and other systematics. To realize efficient polarization modulation over the observation bands, we fabricated an achromatic HWP (AHWP) consisting of three sapphire plates with anti-reflection coatings. The AHWP is designed to have broadband modulation efficiency and transmittance. This paper reports on the design and the preliminary characterization of the AHWPs for SATs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_09620 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The Simons Observatory: Development and Optical Evaluation of Achromatic Half-Wave Plates Sugiyama, Junna Terasaki, Tomoki Sakaguri, Kana Bixler, Bryce Sakurai, Yuki Arnold, Kam Crowley, Kevin T. Datta, Rahul Galitzki, Nicholas Hasegawa, Masaya Johnson, Bradley R. Keating, Brian Kusaka, Akito Lee, Adrian Matsumura, Tomotake Mcmahon, Jeffrey Silva-Feaver, Maximiliano Wang, Yuhan Yamada, Kyohei Instrumentation and Methods for Astrophysics The Simons Observatory (SO) experiment is a cosmic microwave background (CMB) experiment located in the Atacama Desert, Chile. The SO' s small aperture telescopes (SATs) consist of three telescopes designed for precise CMB polarimetry at large angular scales. Each SAT uses a cryogenic rotating half-wave plate (HWP) as a polarization modulator to mitigate atmospheric 1/f noise and other systematics. To realize efficient polarization modulation over the observation bands, we fabricated an achromatic HWP (AHWP) consisting of three sapphire plates with anti-reflection coatings. The AHWP is designed to have broadband modulation efficiency and transmittance. This paper reports on the design and the preliminary characterization of the AHWPs for SATs. |
| title | The Simons Observatory: Development and Optical Evaluation of Achromatic Half-Wave Plates |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2402.09620 |