The millimeter-wave bolometric interferometer (MBI)

We report on the design and tests of a prototype of the Millimeter-wave Bolometric Interferometer (MBI). MBI is designed to make sensitive measurements of the polarization of the cosmic microwave background (CMB). It combines the differencing capabilities of an interferometer with the high sensitivity of bolometers at millimeter wavelengths. The prototype, which we call MBI-4, views the sky directly through four corrugated horn antennas. MBI ultimately will have ~ 1000 antennas. These antennas have low sidelobes and nearly symmetric beam patterns, so spurious instrumental polarization from reflective optics is avoided. The MBI-4 optical band is defined by filters with a central frequency of 90 GHz. The set of baselines, determined by placement of the four antennas, results in sensitivity to CMB polarization fluctuations over the multipole range ℓ = 150 - 270. The signals are combined with a Fizeau beam combiner and interference fringes are detected by an array of spider-web bolometers. In order to separate the visibility signals from the total power detected by each bolometer, the phase of the signal from each antenna is modulated by a ferrite-based waveguide phase shifter. Initial tests and observations have been made at Pine Bluff Observatory (PBO) outside Madison, WI.

[1]  M. Zaldarriaga,et al.  Benchmark parameters for CMB polarization experiments , 2002, astro-ph/0210096.

[2]  Gregory S. Tucker,et al.  The Einstein polarization interferometer for cosmology (EPIC) and the millimeter-wave bolometric interferometer (MBI) , 2006 .

[3]  Sarah E. Church.  Predicting residual levels of atmospheric sky noise in ground-based observations of the cosmic background radiation , 1995 .

[4]  R. Tascone,et al.  Limits due to instrumental polarisation in CMB experiments at microwave wavelengths , 2001 .

[5]  Ghassan Yassin,et al.  CLOVER: The CMB polarization observer , 2005 .

[6]  Jacques Delabrouille,et al.  Some sources of systematic errors on CMB polarized measurements with bolometers , 2002 .

[7]  T. BoekerR.J. Allen.  Imaging and Nulling with the SPACE INTERFEROMETER MISSION , 1999 .

[8]  W. White,et al.  A CMB polarization primer , 1997 .

[9]  John E. Vaillancourt,et al.  Analysis of the Far-Infrared/Submillimeter Polarization Spectrum Based on Temperature Maps of Orion , 2002 .

[10]  Rainer K. Sachs,et al.  Perturbations of a cosmological model and angular variations of the microwave background , 1967 .

[11]  Edward J. Wollack,et al.  First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results , 2003, astro-ph/0302207.

[12]  J. Butler,et al.  Beam-forming matrix simplifies design of electronically scanned antennas , 1961 .

[13]  D. Barkats,et al.  First Measurements of the Polarization of the Cosmic Microwave Background Radiation at Small Angular Scales from CAPMAP , 2005 .

[14]  S. Padin,et al.  The Cosmic Background Imager , 2000, astro-ph/0012212.

[15]  Adrian T. Lee,et al.  The EBEX experiment , 2004, SPIE Optics + Photonics.

[16]  Edward J. Wollack,et al.  Three Year Wilkinson Microwave Anistropy Probe (WMAP) Observations: Polarization Analysis , 2006, astro-ph/0603450.

[17]  J. J. Bock,et al.  The Robinson Gravitational Wave Background Telescope (BICEP): a bolometric large angular scale CMB polarimeter , 2006, SPIE Astronomical Telescopes + Instrumentation.

[18]  Gault C. Amanda.  The Millimeter-wave Bolometric Interferometer -- MBI , 2010 .

[19]  A. Murphy,et al.  The Planck High Frequency Instrument, a third generation CMB experiment, and a full sky submillimeter survey , 2003 .

[20]  D. J. Fixsen,et al.  The Spectral Results of the Far-Infrared Absolute Spectrophotometer Instrument on COBE , 2002 .

[21]  Créidhe O'Sullivan,et al.  Measurements of Structure in the Cosmic Background Radiation with the Cambridge Cosmic Anisotropy Telescope , 1996 .

[22]  U. Seljak,et al.  An all sky analysis of polarization in the microwave background , 1996, astro-ph/9609170.

[23]  Edward J. Wollack,et al.  A Full Waveguide Band Ortimmode Junction , 1996 .

[24]  John E. Carlstrom,et al.  Interferometric Imaging of the Sunyaev-Zeldovich Effect at 30 GHz , 1996 .

[25]  Matias Zaldarriaga,et al.  E/B decomposition of finite pixelized CMB maps , 2003 .

[26]  G. Hinshaw,et al.  Task force on cosmic microwave background research , 2006, astro-ph/0604101.

[27]  William L. Holzapfel,et al.  DASI: a Degree Angular Scale Interferometer for imaging anisotropy in the cosmic microwave background , 1998, Astronomical Telescopes and Instrumentation.

[28]  C. Sozzi,et al.  The Low Frequency Instrument in the ESA Planck mission , 2004 .

[29]  Tarun Souradeep,et al.  CMB power spectrum estimation using noncircular beams , 2004 .

[30]  Jessie L. Dotson,et al.  The Far-Infrared Polarization Spectrum: First Results and Analysis , 1999 .

[31]  P. A. R. Ade,et al.  ACBAR: The Arcminute Cosmology Bolometer Array Receiver , 2003 .

[32]  R. Tascone,et al.  Antenna Instrumental Polarization and its Effects on E- and B-Modes for CMBP Observations , 2004 .

[33]  J. E. Ruhl,et al.  COMPASS: An Upper Limit on Cosmic Microwave Background Polarization at an Angular Scale of 20' , 2004 .

[34]  J. Carlstrom,et al.  Detection of polarization in the cosmic microwave background using DASI , 2002, Nature.

[35]  S. Malu,et al.  The Millimeter-Wave Bolometric Interferometer: Data analysis, simulations and microwave instrumentation , 2007 .

[36]  John Ruhl,et al.  COMPASS: An instrument for measuring the polarization of the CMB on intermediate angular scales , 2003 .

[37]  Mark Dragovan,et al.  Interferometric observation of cosmic microwave background anisotropies , 1999 .

[38]  J. M. Kovac,et al.  Measuring Polarization with DASI , 2002 .

[39]  P. A. R. Ade,et al.  A Measurement of the CMB EE Spectrum from the 2003 Flight of BOOMERANG , 2005, astro-ph/0507514.

[40]  Gregory S. Tucker,et al.  Bolometric interferometry: the millimeter-wave bolometric interferometer , 2003 .

[41]  Albert Stebbins,et al.  Statistics of cosmic microwave background polarization , 1997 .

[42]  John E. Carlstrom,et al.  Degree Angular Scale Interferometer 3 Year Cosmic Microwave Background Polarization Results , 2005 .

[43]  J. A. Brevik,et al.  SPIDER: A Balloon-Borne Polarimeter for Measuring Large Angular Scale CMB B-modes , 2007 .

[44]  A. Michelson,et al.  Measurement of the Diameter of Alpha-Orionis by the Interferometer. , 1921, Proceedings of the National Academy of Sciences of the United States of America.

[45]  P. A. R. Ade,et al.  Cosmological Parameters from the 2003 Flight of BOOMERANG , 2005, astro-ph/0507503.

[46]  Thanu Padmanabhan,et al.  Theoretical Astrophysics: Volume 3, Galaxies and Cosmology , 2000 .

[47]  K. Ng,et al.  E/B Separation in Cosmic Microwave Background Interferometry , 2004 .

[48]  M. Halpern,et al.  FIVE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE OBSERVATIONS: LIKELIHOODS AND PARAMETERS FROM THE WMAP DATA , 2008, 0803.0586.

[49]  J. L. Sievers,et al.  Limits on the Polarization of the Cosmic Microwave Background Radiation at Multipoles up to l ~ 2000 , 2005 .

[50]  S Masi,et al.  A Measurement of the Polarization-Temperature Angular Cross-Power Spectrum of the Cosmic Microwave Background from the 2003 Flight of BOOMERANG , 2006 .

[51]  N. Halverson,et al.  The Impact of Atmospheric Fluctuations on Degree-Scale Imaging of the Cosmic Microwave Background , 1999, astro-ph/9905369.

[52]  Emory F. Bunn,et al.  Systematic Errors in Cosmic Microwave Background Interferometry , 2007 .

[53]  J. Mohr,et al.  The Sunyaev-Zel'dovich Effect , 2000 .

[54]  Jonas Zmuidzinas,et al.  Cramér-Rao sensitivity limits for astronomical instruments: implications for interferometer design. , 2003, Journal of the Optical Society of America. A, Optics, image science, and vision.

[55]  R. B. Partridge,et al.  3 K: The Cosmic Microwave Background Radiation: Cosmology , 1995 .

[56]  Anthony Challinor,et al.  Analysis of CMB polarization on an incomplete sky , 2001 .

[57]  S. Prunet,et al.  Polarized microwave emission from dust , 2002 .