Systematic error cancellation for the PIXIE four-port interferometric polarimeter

Alan Kogut; Dale J. Fixsen

doi:10.1117/12.2311503

9 July 2018 Systematic error cancellation for the PIXIE four-port interferometric polarimeter

Alan Kogut, Dale J. Fixsen

Proceedings Volume 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX; 107083U (2018) https://doi.org/10.1117/12.2311503
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The Primordial In ation Explorer (PIXIE) is an Explorer-class mission concept to measure the gravitational-wave signature of primordial in ation through its distinctive imprint on the linear polarization of the cosmic microwave background. Its optical system couples a polarizing Fourier transform spectrometer to the sky to measure the differential signal between orthogonal linear polarization states from two co-pointed beams on the sky. The double differential nature of the four-port measurement mitigates beam-related systematic errors common to the two-port systems used in most CMB measurements. We describe the polarized beam patterns for PIXIE and assess the systematic error for measurements of CMB polarization.

Citation Download Citation

Alan Kogut and Dale J. Fixsen "Systematic error cancellation for the PIXIE four-port interferometric polarimeter", Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 107083U (9 July 2018); https://doi.org/10.1117/12.2311503

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