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Published February 17, 2003 | Published
Book Section - Chapter Open

Bolometric detectors for the Planck surveyor


The High Frequency Instrument on the NASA/ESA Planck Surveyor, scheduled for launch in 2007, will map the entire sky in 6 frequency bands ranging from 100 GHz to 857 GHz to probe Cosmic Microwave Background (CMB) anisotropy and polarization with angular resolution ranging from 9' to 5'. The HFI focal plane will contain 48 silicon nitride micromesh bolometers operating from a 100 mK heat sink. Four detectors in each of the 6 bands will detect unpolarized radiation. An additional 4 pairs of detectors will provide sensitivity to linear polarization of emission at 143, 217 and 353 GHz. We describe the fabrication process used to meet the stringent mission requirements on sensitivity, speed of response and stability.

Additional Information

© 2003 Society of Photo-optical Instrumentation Engineers (SPIE). This research was performed at Jet Propulsion Laboratory, California Institute Technology, under a contract with National Astronautics and Space Administration. We would like to thank MDL researchers at JPL for their useful discussions regarding to the process development. We also thank Rick Vasquez and Judy Podosek in their valuable contribution to Planck.

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