MORGANTE, GIANLUCAGIANLUCAMORGANTEPearson, DavidDavidPearsonTERENZI, LUCALUCATERENZI2024-02-072024-02-072008http://hdl.handle.net/20.500.12386/34722The Planck sorption cooler nominal unit was actively tested from 27 June until 7 August 2008. It was tested in two main thermal conditions: beginning-of-life; and end-of-life power conditions. These two cases correspond to input powers of 304 and 470 W, and hot radiator interfaces of 270 and 273 K for the cold and hot cases respectively. For the cold case the last pre-cooling stage (PC3C or V-groove 3 temperature) was 47 K and 48 K for the hot case. Cooler performance is determined by these two interfaces.ELETTRONICOenResearch reportFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_17 Instrumentation – telescopes, detectors and techniques