Author/Authors :
Piat، نويسنده , , M. and Leriche، نويسنده , , B. and Torre، نويسنده , , J.-P. and Lamarre، نويسنده , , J.-M. and Benoit، نويسنده , , A. and Crussaire، نويسنده , , J.-P.، نويسنده ,
Abstract :
The ESA satellite project Planck is designed to survey the sky at sub-millimetre and millimetre wavelengths in a drift scan mode. The High-Frequency Instrument (HFI) will use 48 bolometers cooled to 100 mK by a dilution cooler. In this paper, we describe how the scan strategy leads to requirements on the 0.1 K stage temperature stability and how a combination of a passive and an active system can be used to approach this specification.
