Planck early results
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Table 10

Summary of sorption cooler system flight performance.

Characteristic CPVa flight result Ground test result Requirement

Cold end T ........................... 17.0 K at LVHX1 17.1 K at LVHX1 LVHX1  <  19.02 K
18.5 K at TSA 18.7 K at TSA LVHX2  <  22.50 K
Cooling power.......................... 1125 ± 75 mW 1125 ± 75 mW at LVHX1  >  190 mW
at LVHX2  >  646 mW
Input power............................. 301 W 304 W  < 426 W at BOL
Cold end ΔT ........................ 580 mK at LVHX1 550 mK at LVHX1 at LVHX1  <  450 mK
140 mK at TSA 120 mK at TSA at LVHX2  <  100 mK

Notes. 

(a)

Calibration and performance verification phase.

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