Cooling Phoenix

cooling graph

Temperatures of various components in Phoenix while cooling from room temperature. About 90 hours are required to achieve equilibrium with the detector at 30 K and elements along the light path at 50 K. The mount and detector temperatures are actively controlled by heaters after about 60 hours. These data were obtained Nov 8-12, 1997 with newly refurbished cold heads.

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Posted: 15Nov1997