Temperature stability requirements at the interface between the ECCOSORB sky-load and its support in the LFI cryofacility

Date Issued
2004
Author(s)
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Lapolla, Marco
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Abstract
During the testing phase of the QM and FM LFI instrument, the integrated radiometer chain assemblies (RCAs) will be tested in a dedicated cryo facility. The input signal will be provided by an eccosorb load placed in front of the LFI feed horns that simulates the sky signal; the thermal stability of this sky load needs to be of the same order of the stability that is expected in flight for the primary and secondary mirrors, in order not to introduce uncertainties in the test results that may be difficult to interpret. In this document we derive the thermal stability requirements at the interface between the ECCOSORB sky load and its support starting from the signal stability requirements and considering the current knowledge concerning thermal conduction properties of the ECCOSORB at 20 K.
Volume
PL-LFI-PST-TN-059
Uri
Rights
open.access
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PST-TN-059_1_2004_Skyload in Laben Cryofacility.pdf

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1.05 MB

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