PROCESS FOR EVACUATING A THERMALLY INSULATING JACKET IN PARTICULAR THE JACKET OF A DEWAR OR OF ANOTHER CRYOGENIC DEVICE

摘要

Process for evacuating the thermally insulating jacket (5) of a dewar (1) having an inner wall (2) and an outer wall (4), with the inner space between said walls completely partially filled with an insulating material (9), containing also a moisture sorbing material (10) and a getter material (11), in which said moisture sorbing material is a chemical drying agent, and said getter material is a Ba-Li alloy.