Max-Planck-Institut für Gravitationsphysik, Leibniz Universität Hannover, Max-Planck-Institut für Quantenoptik, University of Glasgow, Cardiff University, University of Birmingham, Universitat de les Illes Balears
The mild and dry climate in the Fall made it easy to wrap up the tube with
layers of rockwool. This served as a preparation for the heating of the tube
in January.
The trench has been uncovered; the curved pieces of corrugated iron lie
on the right-hand side. The bales of rockwool have been distributed
along the trench.
Wrapping the tubes is no easy work. You have to protect yourself
against the inhaling of small particles of rockwool. Here you see
Jochen disguised up to his nose and eyes.
Michael passes a layer of rockwool down in the trench where Andy (at the back) and Jochen fix it around the tube.
A look into the trench: The tube has been partly wrapped up.