Summer 1997
Inside the Central Building
Tasks to be done: Liners have to be inserted into the tubes at all four ends in order to reduce the stray light. The gate valves have to be mounted. The first tanks have to be moved to the central station.
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| One of the gallows with a gate valve in front of the tube. |
The gallery. |
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Details of the ventilation system to be installed. |
Tube and Tanks
We are now pumping the east tube and have found and sealed two leaks, but more are to be expected. Five out of the nine tanks to go into the central station are out at Ruthe. They are cleaned and given an air bake at 200°C before they are taken out.
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| One of the CF40 flanges welded to the tube in order to bear a quad. |
A look at the tube in the trench. You can see the suspension of the tube and the light at the end of the tunnel. |
A closer look at one of the many welds of the tube. |
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| The tanks have a height of 2 m and a diameter of 1 m. |
On the left-hand side you see one of the tanks and on the right our "grill". This is a heatable container for the airbake of the tanks. (In order to obtain an idea of it's huge dimensions compare it with the person (Arne) in front of it.) |
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The Liners
The liners have been inserted into the tubes at all four ends. They had to be spot welded to the flanges in order to keep them from moving when rotating or shifting the tube.
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| The wrapped up liners in the central building. | Insertion of a liner into the tube. | |
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| The inserted liners. |
A look into the liner. Liners and baffles work very well: The tube is pitch dark. |
