Abstract
Multichroic polarization sensitive detectors enable increased sensitivity and spectral coverage for observations of the cosmic microwave background. An array optimized for dual frequency detectors can provide 1.7 times gain in sensitivity compared to a single frequency array. We present the design and measurements of horn coupled multichroic polarimeters encompassing the 90 and 150 GHz frequency bands and discuss our plans to field an array of these detectors as part of the ACTPol project.
Original language | English (US) |
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Pages (from-to) | 670-676 |
Number of pages | 7 |
Journal | Journal of Low Temperature Physics |
Volume | 176 |
Issue number | 5-6 |
DOIs | |
State | Published - Sep 2014 |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- General Materials Science
- Condensed Matter Physics
Keywords
- Antireflection coating
- Cosmic microwave background
- Feedhorn
- Millimeter-wave
- Polarimeter
- Silicon lenses
- Superconducting detectors
- TES