Initial test results on bolometers for the Planck high frequency instrument.

We summarize the fabrication, flight qualification, and dark performance of bolometers completed at the Jet Propulsion Laboratory for the High Frequency Instrument (HFI) of the joint ESA/NASA Herschel/Planck mission to be launched in 2009. The HFI is a multicolor focal plane which consists of 52 bolometers operated at 100 mK. Each bolometer is mounted to a feedhorn-filter assembly which defines one of six frequency bands centered between 100-857 GHz. Four detectors in each of five bands from 143-857 GHz are coupled to both linear polarizations and thus measure the total intensity. In addition, eight detectors in each of four bands (100, 143, 217, and 353 GHz) couple only to a single linear polarization and thus provide measurements of the Stokes parameters, Q and U, as well as the total intensity. The measured noise equivalent power (NEP) of all detectors is at or below the background limit for the telescope and time constants are a few ms, short enough to resolve point sources as the 5 to 9 arc min beams move across the sky at 1 rpm.

[1]  Park,et al.  Bias-induced nonlinearities in the dc I-V characteristics of neutron-transmutation-doped germanium at liquid-4He temperatures. , 1989, Physical review. B, Condensed matter.

[2]  J. J. Bock,et al.  A Polarization Sensitive Bolometric Receiver for Observations of the Cosmic Microwave Background , 2002, SPIE Astronomical Telescopes + Instrumentation.

[3]  J. Lamarre.  Photon noise in photometric instruments at far-infrared and submillimeter wavelengths. , 1986, Applied optics.

[4]  V. V. Hristov,et al.  A low noise, high thermal stability, 0.1 K test facility for the Planck HFI bolometers , 2002 .

[5]  James J. Bock,et al.  Bolometric detectors for the Planck surveyor , 2003, SPIE Astronomical Telescopes + Instrumentation.

[6]  M. J. Griffin,et al.  The influence of background power on the performance of an ideal bolometer , 1986 .

[7]  Paul L. Richards,et al.  Numerical optimization of bolometric infrared detectors including optical loading, amplifier noise, and electrical nonlinearities , 1996 .

[8]  A. Woodcraft,et al.  Thermal Modelling and Characterisation of Semiconductor Bolometers , 2002 .

[9]  Regis P. Brekosky,et al.  1/f Noise and hot electron effects in variable range hopping conduction , 2002 .

[10]  H. D. Castillo,et al.  Composite infrared bolometers with Si3N4 micromesh absorbers. , 1997, Applied optics.

[11]  James J. Bock,et al.  The Planck high-frequency instrument: a third-generation CMB probe and the first submillimeter surveyor , 2003, SPIE Astronomical Telescopes + Instrumentation.

[12]  J. Mather,et al.  Bolometers: ultimate sensitivity, optimization, and amplifier coupling. , 1984, Applied optics.

[13]  C. B. Netterfield,et al.  Instrumental and analytic methods for bolometric polarimetry , 2006, astro-ph/0606606.

[14]  J. Birmingham,et al.  The heat capacity of4He monolayers adsorbed on evaporated gold , 1997 .

[15]  K. Lint.  LAKE SHORE CRYOTRONICS, INC. , 2007 .

[16]  V. V. Hristov,et al.  The BOOMERANG North America Instrument: A Balloon-borne Bolometric Radiometer Optimized for Measurements of Cosmic Background Radiation Anisotropies from 0.°3 to 4° , 2001, astro-ph/0105148.

[17]  James J. Bock,et al.  Preliminary performance measurements of bolometers for the Planck high-frequency instrument , 2003, SPIE Astronomical Telescopes + Instrumentation.

[18]  P. Richards.  Bolometers for infrared and millimeter waves , 1994 .

[19]  E. Haller.  Physics and design of advanced IR bolometers and photoconductors. , 1985 .

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

[21]  Haller,et al.  Non-Ohmic hopping conduction in doped germanium at T<1 K. , 1992, Physical review. B, Condensed matter.

[22]  J. Mather.  Bolometer noise: nonequilibrium theory. , 1982, Applied optics.

[23]  A. Coulais,et al.  Modeling of Planck-high frequency instrument bolometers using non-linear effects in the thermometers , 2006 .

[24]  V. V. Hristov,et al.  BOOMERANG: A Balloon-borne Millimeter-Wave Telescope and Total Power Receiver for Mapping Anisotropy in the Cosmic Microwave Background , 2002, astro-ph/0206254.