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.
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX
- Pub Date:
- July 2018
- Astrophysics - Instrumentation and Methods for Astrophysics
- Proceedings of the SPIE, Volume 10708, id. 107084B 12 pp. (2018)