Transfer of liquid helium to dewars
Date: 25 February 2009
Satellite: Herschel
Depicts: Top of dewar with valves and connection points
Location: Centre Spatial Guyanais, Kourou, French Guiana
Copyright: ESA
Liquid helium is being transferred from large containers (30 000 litres capacity) to smaller dewars (~450 litres capacity).
Evaporating helium from the filling process causes the humidity in the air to condense on the surface of the dewar (white ice patches).
Last Update: 1 September 2019
