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Primordial Inflation Explorer (PIXIE).

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Title: Primordial Inflation Explorer (PIXIE).
Author: Halpern, Mark; Hinshaw, Gary F.
Issue Date: 2011
Publicly Available in cIRcle 2011-09-30
Publisher Society of Photo-Optical Instrumentation Engineers
Citation: Kogut, Alan J.; Chuss, David, T.; Dotson, Jessie L.; Fixsen, Dale J.; Halpern, Mark; Hinshaw, Gary F. F.; Meyer, Stephan M.; Moseley, S. Harvey; Seiffert, Michael D.; Spergel, David N.; Wollack, Edward J. Primordial Inflation Explorer (PIXIE). UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts V, edited by Howard A. MacEwen, James B. Breckinridge . Proceedings of SPIE Volume 8146, 81460T, 2011. http://dx.doi.org/10.1117/12.892558
Abstract: The Primordial Inflation Explorer is an Explorer-class mission to measure the gravity-wave signature of primordial inflation through its distinctive imprint on the linear polarization of the cosmic microwave background. PIXIE uses an innovative optical design to achieve background-limited sensitivity in 400 spectral channels spanning 2.5 decades in frequency from 30 GHz to 6 THz (1 cm to 50 μm wavelength). Multi-moded non-imaging optics feed a polarizing Fourier Transform Spectrometer to produce a set of interference fringes, proportional to the difference spectrum between orthogonal linear polarizations from the two input beams. The differential design and multiple signal modulations spanning 11 orders of magnitude in time combine to reduce the instrumental signature and confusion from unpolarized sources to negligible levels. PIXIE will map the full sky in Stokes I, Q, and U parameters with angular resolution 2.°6 and sensitivity 0.2 μK per 1° square pixel. The principal science goal is the detection and characterization of linear polarization from an inflationary epoch in the early universe, with tensor-to-scalar ratio r < 10-3 at 5 standard deviations. We describe the PIXIE instrument and mission architecture needed to detect the signature of an inflationary epoch in the early universe using only 4 semiconductor bolometers. Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Affiliation: Physics and Astronomy, Dept of
URI: http://hdl.handle.net/2429/37733
Peer Review Status: Reviewed
Scholarly Level: Faculty

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