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AOS (Baffles & Beam dumps)
simon.zeidler - 20:41 Thursday 21 June 2018 (5343) Print this report
Unpack WAB and Installation of WAB-traverser in IXC

Akutsu-san, Tanaka-san, Simon

WAB:

We unpacked the WAB from the wooden box with the aid of one of the cranes in the center area and moved it (still wrapped in foil) into the IXC clean-booth. We put it on the table and replaced the eyelet on top with the lift-adapter for the traverser.
The baffle protectors are still mounted.

Traverser:

We installed the traverser inside the cryostat today and took measurements of its planarity.
Before that, we recognized that the feet for fixing the traverser's main beams should be transposed. Because of an obliqueness of the cryostat itself, the duct side of the traverser should have a thicker foot than the BS side. However, thicker and thinner foot were each on the wrong side at first. So, we changed that.
The feet parts are fixed to the cryostat's T-beams with M8 screws and nuts.

Then, we mounted the lateral beam with the vertical lifter on the two main beams and confirmed its planarity to be in an acceptable range.

Pictures on our work:

beam fix duct-side left
left beam's planarity
left beam's planarity more precise (~0.3mm/m)
beam fix duct-side right
right beam's planarity
right beam's planarity more precise (~0.6mm/m)
lateral beam's planarity
lateral beam's planarity in duct position more precise (~0.6mm/m)
lateral beam's planarity in center position more precise (~0.4mm/m)
lateral beam view

Damper:

In addtition, we fixed the magnet misalignment happened during the transport and reinstalled the damper to the WAB.

Images attached to this report
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