Difference between revisions of "Minutes-7-19-2012"
From GlueXWiki
| Line 28: | Line 28: | ||
- Several options were considered: 1) to put #28 and #3 in the fourth package and finish it, 2)To try to fix two of the boards and use them in the fourth package, 3) to wait for the spare parts to build four new wire frames and use two of them in the fourth package. So far we excluded option #1. Since 2) and 3) will take time we decided to close the fourth package with four cells, take it out of the installation fixture and put there the first package for refurbishment (we did all this right after the meeting). | - Several options were considered: 1) to put #28 and #3 in the fourth package and finish it, 2)To try to fix two of the boards and use them in the fourth package, 3) to wait for the spare parts to build four new wire frames and use two of them in the fourth package. So far we excluded option #1. Since 2) and 3) will take time we decided to close the fourth package with four cells, take it out of the installation fixture and put there the first package for refurbishment (we did all this right after the meeting). | ||
| − | - One way to fix the trace (Bill) is to cut the wire frame from the back in the Rohacell region ( Casey has done this once), another way (Dave) is to bypass the trace on the back side and make cable connection on the top. We decided to go with the later, but for that we have to mill a | + | - One way to fix the trace (Bill) is to cut the wire frame from the back in the Rohacell region ( Casey has done this once), another way (Dave) is to bypass the trace on the back side and make cable connection on the top. We decided to go with the later, but for that we have to mill a niche below at the O-ring place for the wire and glue it there. Bill will work on the tooling for that. |
| − | - Third package: | + | - Third package: labels are put on the pre-amps and installed on the package. Vlad is working on the grounding positions. He marked the places for the grounding on several cells. At some places one ground strip will connect two or three cells. At one location per cell the grounding has to be split, at one place the big clip will be put and at another place, close to that, the other clip. Vlad is working on a measuring tool to record the angles of the grounding places, to be used by the techs. |
| − | + | ||
| − | + | ||
== Engineering update == | == Engineering update == | ||
| − | - Bill | + | - Bill submitted a PR for the four extra g10 wire frames. |
== Electronics update == | == Electronics update == | ||
Revision as of 19:05, 19 July 2012
July 19, 2012 FDC meeting
Agenda
- Production Construction Tracking (Dave)
- Fourth package status and spare wire frames (Lubomir, Vlad)
- Third package preparation
- Grounding scheme (Vlad)
- Engineering [1], [2], [3], [4], [5] (Bill)
- Electronics (Chris, Nick)
- Gas system (Beni, Bill)
- Pipe outgassing, gas detector aiging
- Gas mixture (Lubomir)
- Test set-up in 126 (Beni)
- Other
![[1]](http://www.jlab.org/Hall-D/detector/fdc/drawings/spacer_ring_picture1.png){kind=link}
![[2]](http://www.jlab.org/Hall-D/detector/fdc/drawings/schematic.png){kind=link}
![[3]](http://www.jlab.org/Hall-D/detector/fdc/drawings/latest_chiller_view.png){kind=link}
![[4]](http://www.jlab.org/Hall-D/detector/fdc/drawings/spacer_ring_cross_section.png){kind=link}
![[5]](http://www.jlab.org/Hall-D/detector/fdc/drawings/spacer_ring_picture2.png){kind=link}