Planck early results
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Table 1

Requirements on the sorption cooler system.

Item Requirement

Cold end temperature ... 17.5 K  <  LVHX1  <  19.02 K
17.5 K  <  LVHX2  <  22.50 K
Cooling power ......... at LVHX1  >  190 mW
at LVHX2  >  646 mW
Input power ............  < 426 W, beginning of life
Cold end temperature ... ΔT at LVHX1  <  450 mK
 fluctuations ΔT at TSA  <  100 mK

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