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Planck early results
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Table 11

Mean values and daily stability of the main LFI temperature sensors in two cases representative of the best and worst case.

Early Phasea Late Phaseb
T σT ΔTp − p T σT ΔTp − p
Sensor [K] [K] [K] [K] [K] [K]
TS1R .....................................  19.865 0.0036 0.026  20.007 0.0169 0.127
TS2R .....................................  20.506 0.0008 0.007  20.639 0.0075 0.050
TS3R .....................................  20.399 0.0008 0.007  20.532 0.0077 0.052
TS4R .....................................  20.037 0.0014 0.011  20.176 0.0118 0.085
TS5R .....................................  20.388 0.0005 0.005  20.521 0.0078 0.053
TS6R .....................................  20.587 0.0005 0.004  20.719 0.0053 0.031
TS1L .....................................  20.635 0.0008 0.006  20.771 0.0038 0.022
TS2L .....................................  20.480 0.0008 0.007  20.614 0.0051 0.032
TS3L .....................................  20.090 0.0012 0.009  20.227 0.0098 0.072
TS4L .....................................  20.755 0.0008 0.006  20.891 0.0038 0.022
TS5L .....................................  20.569 0.0005 0.004  20.705 0.0044 0.025
TS6L .....................................  20.826 0.0005 0.004  20.964 0.0039 0.021
L-BEM1 ................................ 289.232 0.040  0.177 289.899 0.0156 0.095
L-BEM2 ................................ 291.694 0.041  0.198 292.380 0.0158 0.100
R-BEM1 ................................ 291.923 0.045  0.179 292.709 0.0141 0.080
R-BEM2 ................................ 289.366 0.044  0.181 290.137 0.0144 0.085

Notes. The early phase was the best case for the focal plane and the worst case for the backend; the late phase was the opposite.

(a)

“Early Phase” means sorption cooler FM2 operating, transponder cycling.

(b)

“Late Phase” means sorption cooler FM1 operating, transponder always on.

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