Minutes-8-13-2015

August 13, 2015 Drift Chamber meeting

Connection

1. Instructions for Bluejeans meeting connection
2. Meeting ID: 290664653
3. To join via a Web Browser, go to the page [1] https://bluejeans.com/290664653.

Agenda

1. Detector performance document GlueX-doc-2775
2. CDC update (Mike, Simon, Beni)
   • wire offsets vs z (logbook entry)
3. FDC update (Luke,Lubomir)
   • Tagger Tests with Fe source: [2][3][4][5]
4. Electronics (Fernando, Chris, Nick)
   • separating broken CDC wire
5. Engineering
6. Other

Minutes

Participants: Curtis, Naomi, Mike (CMU), Luke, Beni, Dave, Chris, Nick, Simon, Sergey and Lubomir (JLab).

Detector performance document

- Curtis is working on a document describing the so-far achieved detector parameters compared with the design goals. Lubomir will add a page about the FDC.

CDC update

- Simon studied the wire offset as function of z (along wire) using beam data. In the logbook entry linked above, the two plots show the offsets for a straw at 9 o'clock when the track is above/below the wire. The offset variations are consistent with up/down deformation, possibly sagging of the tube or wire. To confirm this, need to look also at straws at 12/6 o'clock. Curtis, Naomi: if supported at the ends only the tubes will sag by few mm, but after gluing them together there was no sagging.

- Cosmic data will betaken over the weekend with mode 7.

Electronics

- Nich showed pictures (logbook entry linked above) demonstrating the CDC broken wire separation.

FDC update

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