November 7, 2012 tracking CDC/FDC

Meeting Time and Place

Wednesday November 7, 2012 at 11:00am At Jefferson Lab, the meeting will be held in F326

Connections

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Hardware Agenda

1. Announcements
2. FDC Update
3. CDC Update
   1. CDC Photos
4. Calibrations

Minutes

Participants: Curtis, Naomi, Beni, Simon, Lubomir, Mark

1. FDC Update
2. CDC Update
   1. Wiring the transition boards was completed last week.
   2. Gary made some a cooling ring with 32 holes in (at a 45 degree angle to the endplate) to blow air onto the electronics and fitted it to the chamber temporarily.
   3. There was a fairly large discrepancy between the volume of air being blown into the chamber and the volume coming out through the bubblers. This is thought to be partly due to a gap in the sealing of the temporary downstream plenum. Whilst the chamber was being inspected for potential leaks, cracks were spotted in the neoprene U-channels forming part of the upstream plenum wall. These will be covered with DP-190 to seal the cracks. Then we will refit the temporary plenum (gasbag) and compare gas flow in and out.