Helium is a rare gas that is very expensive and therefore it is desirable to use helium sustainably.
In experiments at the UHV systems, liquid helium is used for cooling. The cooling causes the helium to warm up and become gaseous. If it is subsequently released as a gas, it would rise into the stratosphere and from there escape into space.
The goal of the recovery system is to recapture the helium in a balloon, compress it with a compressor and store it in gas cylinders. The helim is then reused in a circular economy.
The installation of the helium recovery line was carried out by the Andrick company from Berlin.