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The high frequency instrument of Planck: requirements and design

Lamarre, J. M., Maffei, B., Ade, Peter A. R., Piat, M., Bock, J., Puget, J. L., de Bernardis, P., Giard, M., Lange, A., Murphy, A., Torre, J. P., Benoit, A., Bhatia, R., Bouchet, F. R., Sudiwala, Rashmikant V. and Yourchenko, V. 2002. The high frequency instrument of Planck: requirements and design. Presented at: Experimental Cosmology at Millimetre Wavelengths: 2K1BC Workshop, Breuil-Cervinia (AO), Valle d’Aosta, 9-13 July 2001. Published in: De Petris, Marco and Gervasi, Massimo eds. Experimental cosmology at millimetre wavelengths : 2K1BC Workshop : Breuil-Cervinia (AO), Valle d'Aosta, Italy, 9-13 July 2001. AIP conference proceedings , vol. 616. Melville, NY: American Institute of Physics, p. 213. 10.1063/1.1475631

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Abstract

The Planck satellite is a project of the European Space Agency based on a wide international collaboration, including United States and Canadian laboratories. It is dedicated to the measurement of the anisotropy of the Cosmic Microwave Background (CMB) with unprecedented sensitivity and angular resolution. The detectors of its High frequency Instrument (HFI) are bolometers cooled down to 100 mK. Their sensitivity will be limited by the photon noise of the CMB itself at low frequencies, and of the instrument background at high frequencies. The requirements on the measurement chain are directly related to the strategy of observation used for the satellite. Due to the scanning on the sky, time features of the measurement chain are directly transformed into angular features in the sky maps. This impacts the bolometer design as well as other elements: For example, the cooling system must present outstanding temperature stability, and the amplification chain must show, down to very low frequencies, a flat noise spectrum.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: American Institute of Physics
ISBN: 0735400628
ISSN: 0094-243X
Last Modified: 04 Jun 2017 06:32
URI: http://orca.cf.ac.uk/id/eprint/61800

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