LAr barrel calorimeter installation
November 2004
Pictures of the LAr barrel calorimeter installation in the atlas pit, november 2004.
Photos taken by Nikolai Topilin. Comments by Thomas Hott (2004/11/03):
"Dear Colleagues,
I am happy to inform you that the LAr Barrel Calorimeter was successfully
transported to Point-1 and installed in UX-15 during the course of the
last 10 days.
The only observed problem was due to a problem of the special trailer
when leaving Bdg. 180, causing for a short moment accelerations that
slightly exceeded the values that have been specified for this transport.
As a result both EM Wheels moved longitudinally inside the Cryostat - one
ca. 0.2 mm and the other ca. 0.5 mm. Starting next week the LAr community
will have a close look to the EM detectors to find out if there is any
internal damage.
Entering SX-1 and unloading the LAr cryostat went very smoothly as well
as the lowering into UX-15. Difficult moments have been when the Cryostat
was lifted out of its transport cradle and when being inserted into the
Tile's lower half. However, there was nothing damaged neither on the
Cryostat nor on the Tile.
The Cryostat is meanwhile aligned relative to the Tile axis and its full
load was applied to its final supports. The conjoint assembly proved to
be stable and an immediate survey delivered excellent alignment results.
I would like to congratulate and express my sincere thanks to all people
that contributed to this important achievement - in equal measure to all
those who have been involved so heavily in the very last time as well as
to all those who have contributed over the last years to the planning."
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