9 July 2018 Feedhorn development and scalability for Simons Observatory and beyond
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Abstract
The Simons Observatory (SO) will measure the cosmic microwave background (CMB) in both temperature and polarization over a wide range of angular scales and frequencies from 27-270 GHz with unprecedented sensitivity. One technology for coupling light onto the ~50 detector wafers that SO will field is spline-profiled feedhorns, which offer tunability between coupling efficiency and control of beam polarization leakage effects. We will present efforts to scale up feedhorn production for SO and their viability for future CMB experiments, including direct-machining metal feedhorn arrays and laser machining stacked Si arrays.
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Sara M. Simon, Sara M. Simon, Joseph E. Golec, Joseph E. Golec, Aamir Ali, Aamir Ali, Jason Austermann, Jason Austermann, James A. Beall, James A. Beall, Sarah Marie M. Bruno, Sarah Marie M. Bruno, Steve K. Choi, Steve K. Choi, Kevin T. Crowley, Kevin T. Crowley, Simon Dicker, Simon Dicker, Bradley Dober, Bradley Dober, Shannon M. Duff, Shannon M. Duff, Erin Healy, Erin Healy, Charles A. Hill, Charles A. Hill, Shuay-Pwu Patty Ho, Shuay-Pwu Patty Ho, Johannes Hubmayr, Johannes Hubmayr, Yaqiong Li, Yaqiong Li, Marius Lungu, Marius Lungu, Jeff McMahon, Jeff McMahon, John Orlowski-Scherer, John Orlowski-Scherer, Maria Salatino, Maria Salatino, Suzanne Staggs, Suzanne Staggs, Edward J. Wollack, Edward J. Wollack, Zhilei Xu, Zhilei Xu, Ningfeng Zhu, Ningfeng Zhu, "Feedhorn development and scalability for Simons Observatory and beyond", Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 107084B (9 July 2018); doi: 10.1117/12.2313405; https://doi.org/10.1117/12.2313405
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