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After the modules were produced in R12 and assembled to frames they were transported to the large experiment hall R55. In this hall ISIS and KARMEN are situated. First the frames were installed at the left side, the right side and the side towards the target of the bunker.
The following pictures show the installation of the frames at the rest of the bunker remaining after the slabs had been removed.
|Left front edge of the Bunker viewed from the roof.||View over the bunker towards the target.|
|Right front edge of the bunker viewed also from the roof. The steel structure right of the bunker are the rails carrying the crane.||View from the target towards the crane.|
|Remaining side wall of the bunker. The slabs were covered with a protective paint.||Here the first veto modules are installed at the side wall.|
|A gap is going to be closed - the module frame is ready for use ...||and is lifted to the right height with the crane.|
|Now it is moved to the wall and is positioned precisely.||The side towards the target.|
|High precison is inevitable while the frames are lowered onto each other.||To achieve small gaps between the frames was most important.|
|The high voltage and signal cables were guided downwards and collected in cable channels guiding them to the electronics tower.||The first slabs were re-installed hiding the veto modules. Here the small available space between the slabs and the modules is visible.|
|View from the roof of the bunker downwards. The veto modules wrapped in black PE-foil and the first layer of slabs are visible.||Side wall viewed from the roof with veto modules and first slab layer.|
|4 cm thick polyethylen sheets were 'nailed' to the first slab layer. This reduces the background caused by thermal neutrons from the ISIS target.||The 'nailing' had to be prepared ... hundreds of wholes had to be drilled into the slabs.|
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