Cold optical design for the Large Aperture Simons Observatory telescope

Dicker, S. R.; Gallardo, P. A.; Gudmundsson, J. E; Mauskopf, P. D.; Ali, A.; Ashton, P. C.; Coppi, G.; Devlin, M. J.; Galitzki, N.; Ho, S. P.; Hill, C. A.; Hubmayr, J.; Keating, B.; Lee, A. T.; Limon, M.; Matsuda, F.; McMahon, J.; Niemack, M. D.; Orlowski-Scherer, J. L.; Piccirillo, L.; Salatino, M.; Simon, S. M.; Staggs, S. T.; Thornton, R.; Ullom, J. N.; Vavagiakis, E. M.; Wollack, E. J.; Xu, Z.; Zhu, N.

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Cold optical design for the Large Aperture Simons Observatory telescope

Title:	Cold optical design for the Large Aperture Simons Observatory telescope
Author:	Dicker, S. R. Gallardo, P. A. Gudmundsson, J. E Mauskopf, P. D. Ali, A. Ashton, P. C. Coppi, G. Devlin, M. J. Galitzki, N. Ho, S. P. ... 19 more authors Show all authors Hill, C. A. Hubmayr, J. Keating, B. Lee, A. T. Limon, M. Matsuda, F. McMahon, J. Niemack, M. D. Orlowski-Scherer, J. L. Piccirillo, L. Salatino, M. Simon, S. M. Staggs, S. T. Thornton, R. Ullom, J. N. Vavagiakis, E. M. Wollack, E. J. Xu, Z. Zhu, N. 29 authors Show fewer authors
Date:	2018-08-15
Language:	English
Department:	Faculty of Physical Sciences
Subject:	astro-ph.IM
URI:	https://hdl.handle.net/20.500.11815/4114
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Citation: Dicker , S R , Gallardo , P A , Gudmundsson , J E , Mauskopf , P D , Ali , A , Ashton , P C , Coppi , G , Devlin , M J , Galitzki , N , Ho , S P , Hill , C A , Hubmayr , J , Keating , B , Lee , A T , Limon , M , Matsuda , F , McMahon , J , Niemack , M D , Orlowski-Scherer , J L , Piccirillo , L , Salatino , M , Simon , S M , Staggs , S T , Thornton , R , Ullom , J N , Vavagiakis , E M , Wollack , E J , Xu , Z & Zhu , N 2018 ' Cold optical design for the Large Aperture Simons Observatory telescope ' .
Abstract: The Simons Observatory will consist of a single large (6 m diameter) telescope and a number of smaller (0.5 m diameter) refracting telescopes designed to measure the polarization of the Cosmic Microwave Background to unprecedented accuracy. The large aperture telescope is the same design as the CCAT-prime telescope, a modified Crossed Dragone design with a field-of-view of over 7.8 degrees diameter at 90 GHz. This paper presents an overview of the cold reimaging optics for this telescope and what drove our choice of 350-400 mm diameter silicon lenses in a 2.4 m cryostat over other possibilities. We will also consider the future expandability of this design to CMB Stage-4 and beyond.