Revision as of 18:18, 27 February 2014

February 27, 2014 FDC meeting

Agenda

Installation status [1]
Engineering (Bill, Dave)
1. Cathode scan
2. LV fast shutdown
Electronics problematic channels (Fernando, Chris, Nick)
Mini-DAQ status FDC E-log (Beni)
Other

@@ Line 14: / Line 14: @@
 = Minutes =
-Participants: Eugene, Fernando, Bill, Dave, Nick, Chris, Simon, Beni, and Lubomir.
+Participants: Eugene, Bill, Dave, Nick, Chris, Simon, Beni, and Lubomir.
 == Installation ==
-- On Thursday last week we inserted the FDC into the magnet (see pictures attached). It was taken out of the magnet on Monday. The test was successful and we learned how to better handle the cables during insertion, what we discussed on the meeting. As Chris suggested, during the extraction, we used a strap to keep the cables up when moving the FDC. Bill suggested, for the final insertion, to use bearings (at least three) attached to the rails to be able to move the cables together with the rest, FDC and the mesh. Another discussion: how to attach the cables to the face of the magnet. On Monday we already exercised this at one quadrant using holding rings attached to the magnet. The main problem is that one has to spread the cables evenly around the periphery to make space for the CDC and also to be able to work on the BCAL modules. Beni proposed to extend the mesh further at the upstream side to cover completely the CDC, however the question was if there will be space to work around the BCAL modules. Bill proposed to build a ring (attached to the platform) with the same diameter as the mesh to hold the cables and, at the same time, be able to work on the other detectors. Fernando proposed to build a bigger movable ring attached to the face of the magnet, to support the cables.
+- A cable holder frame has been installed at the top on face of the magnet (picture attached). It's too far from the mesh and the cables will sag (Nick), but better than before. We may need such frames also on the sides. Tom is working on the cable cradle
 - Before the insertion, the cooling system failed again, the reasons are unknown so far, but there was no LV at this time. During the insertion the Fluorinert houses were disconnected and taped with duck tape at the chiller side (due to the lack of proper caps), as a result we lost >1 gal of Fluorinert: need proper caps for the final insertion!

Difference between revisions of "Minutes-2-27-2014"

Revision as of 18:18, 27 February 2014

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