Effect of Sorption Cooler temperature variations on LFI front-end
Date Issued
2001
Author(s)
MENNELLA, ANIELLO
•
Bersanelli, Marco
•
Ferretti, Roberto
•
MORGANTE, GIANLUCA
•
Prina, Mauro
•
BURIGANA, CARLO
•
Maino, Davide
Abstract
In this technical note we provide a major update of the analysis of impact of front-end thermal fluctuation on
LFI measurements. In this update we consider JPL latest simulations concerning the stability of the Sorption
Cooler Cold End, the thermal damping provided by the LFI mechanical structure and the partial removal of
the final systematic effect from the LFI maps obtained using a so-called “destriping” algorithm. Our results
indicate that although several factors contribute to reduce the impact of Sorption Cooler thermal instabilities
on the measured sky signal, the final systematic effect cannot be considered negligible, especially if the
Sorption Cooler will not work under ideal conditions.
Volume
PL-LFI-PST-TN-005
Rights
open.access