Thermal susceptibility of the Planck-LFI receivers

Details Thermal susceptibility of the Planck-LFI receivers Thermal susceptibility of the Planck-LFI receivers

2010-01-26

arxiv.org/abs/1001.4653v1

Journal of Instrumentation, Vol. 4, 12, pp. T12012 (2009)

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

This is an author-created, un-copyedited version of an article accepted for publication in Journal of Instrumentation. IOP Pub

Scientific paper

10.1088/1748-0221/4/12/T12012

This paper is part of the Prelaunch status LFI papers published on JINST: http://www.iop.org/EJ/journal/-page=extra.proc5/jinst . This paper describes the impact of the Planck Low Frequency Instrument front end physical temperature fluctuations on the output signal. The origin of thermal instabilities in the instrument are discussed, and an analytical model of their propagation and impact on the receivers signal is described. The experimental test setup dedicated to evaluate these effects during the instrument ground calibration is reported together with data analysis methods. Finally, main results obtained are discussed and compared to the requirements.

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