March 2021
Spotlight Summary by Thierry Lépine
The Simons Observatory: modeling optical systematics in the Large Aperture Telescope
The Simons observatory will be used to detect and analyze the cosmic microwave background, which is a microwave electromagnetic radiation that fills the universe and was emitted at the time of the recombination, about 380,000 years after the Big Bang. It will be installed in the Atacama Desert at an altitude of 5200 m.
The detection will be made in 6 bands between 27 and 270 GHz. The set-up will be sensitive to the polarization that could partially arise from the gravitational waves emitted during the inflation phase.
The Simons telescope is a Crossed-Dragone telescope with an entrance pupil diameter close to 6 m. The configuration is known to preserve the incoming polarization through the optics. The authors have used simulation tools (Zemax in sequential and non-sequential modes, and Ticra) to design the telescope and its cryogenic receivers, to analyze all sources of errors, and to prove that the instrument will be able to fulfill its mission.
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The detection will be made in 6 bands between 27 and 270 GHz. The set-up will be sensitive to the polarization that could partially arise from the gravitational waves emitted during the inflation phase.
The Simons telescope is a Crossed-Dragone telescope with an entrance pupil diameter close to 6 m. The configuration is known to preserve the incoming polarization through the optics. The authors have used simulation tools (Zemax in sequential and non-sequential modes, and Ticra) to design the telescope and its cryogenic receivers, to analyze all sources of errors, and to prove that the instrument will be able to fulfill its mission.
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Article Information
The Simons Observatory: modeling optical systematics in the Large Aperture Telescope
Jon E. Gudmundsson, Patricio A. Gallardo, Roberto Puddu, Simon R. Dicker, Alexandre E. Adler, Aamir M. Ali, Andrew Bazarko, Grace E. Chesmore, Gabriele Coppi, Nicholas F. Cothard, Nadia Dachlythra, Mark Devlin, Rolando Dünner, Giulio Fabbian, Nicholas Galitzki, Joseph E. Golec, Shuay-Pwu Patty Ho, Peter C. Hargrave, Anna M. Kofman, Adrian T. Lee, Michele Limon, Frederick T. Matsuda, Philip D. Mauskopf, Kavilan Moodley, Federico Nati, Michael D. Niemack, John Orlowski-Scherer, Lyman A. Page, Bruce Partridge, Giuseppe Puglisi, Christian L. Reichardt, Carlos E. Sierra, Sara M. Simon, Grant P. Teply, Carole Tucker, Edward J. Wollack, Zhilei Xu, and Ningfeng Zhu
Appl. Opt. 60(4) 823-837 (2021) View: Abstract | HTML | PDF