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A Detector for Cosmic Microwave Background PolarimetryWe present preliminary design and development work on polarized detectors intended to enable Cosmic Microwave Background polarization measurements that will probe the first moments of the universe. The ultimate measurement will be challenging, requiring background-limited detectors and good control of systematic errors. Toward this end, we are integrating the beam control of HE-11 feedhorns with the sensitivity of transition-edge sensors. The coupling between these two devices is achieved via waveguide probe antennas and superconducting microstrip lines. This implementation allows band-pass filters to be incorporated on the detector chip. We believe that a large collection of single-mode polarized detectors will eventually be required for the reliable detection of the weak polarized signature that is expected to result from gravitational waves produced by cosmic inflation. This focal plane prototype is an important step along the path to this detection, resulting in a capability that will enable various future high performance instrument concepts.
Document ID
20080047691
Document Type
Conference Paper
Authors
Wollack, E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Cao, N. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Chuss, D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hsieh, W.-T. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Moseley, S. Harvey (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Stevenson, T. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
U-yen, K. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 24, 2013
Publication Date
July 6, 2008
Subject Category
Instrumentation and Photography
Meeting Information
Astronomical Polarimetry 2008 Conference(Montreal)
Distribution Limits
Public
Copyright
Other