Difference between revisions of "Dec 2, 2008 BCAL Construction"
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The discussion started with the inner (top) plate and possible machining after layup. It was decided that the layp total thickness tolerance of 1.5 mm would be achievable and acceptable for the installation proces. The variation can be accounted for by shimming the tracking chamber support rail on assy. | The discussion started with the inner (top) plate and possible machining after layup. It was decided that the layp total thickness tolerance of 1.5 mm would be achievable and acceptable for the installation proces. The variation can be accounted for by shimming the tracking chamber support rail on assy. | ||
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| + | We will use the inner plates with the rail support holes on the "49th" module. These will be thru holes and will be plugged during layup. | ||
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| + | It was decided to drill all the holes in the base plate (except the 4 end holes) prior to layup. The end holes will be machined after facing the ends at Alberta on the NC mill. | ||
Revision as of 11:48, 3 December 2008
Contents
Teleconference Instructions
Meeting will start at 3:30pm Newport News / 2:30pm Regina / 1:30pm Edmonton
Persons onsite at JLab meet in CC F228
- +1-800-377-8846 : US
- +1-888-276-7715 : Canada
- +1-302-709-8424 : International
- then enter participant code: 39527048# (remember the "#")
Items for followup from Oct 15 meeting
- See Wiki page Oct 15, 2008 Calorimetry
- Construction Manager
- Progress at UofA on job description, job ad
- Co-Op job ads
- Prepare a spread sheet with all pieces and machining steps needed as preparation (jigs, Al plates, bars for mounting, ...) for the module production. Especially time and manpower estimates should be included, so that this information can be folded into our schedule (Gilbert).
Documents to Review
- Dan's questions: Media:BCAL_questions.doc DAN's stack up dwg
Tentative Agenda
- Announcements
- Base Plate Latest base plate dwg
- Discuss hole/pocket locations, sizes and tolerances
- Are drawings final? If yes, expedite prototype base plate construction
- O-ring location
- Top Plate Latest inner plate dwg
- Have it thicker than 8mm and machine it down for leveling?
- Features machined after previous step (holes then are not through)
- How are the tracking packages mounted inside BCAL mount inside BCAL
- Drawings Latest machined wedge dwg
- Overall Tolerances, conflicts, stacking of systematic building errors
- Danny's/Kevin's questions
- Kevin's plans at Ross for 7.5o fixture
- Assignment of machining tasks (UofA, Ross Machine Shop)
- Detailed schedule for preparation for module production (Gilbert)
- Other business
- Use DocDB (has version capability) for Drawings uploads; PDF for sure, maybe other formats (engineering, 3D renderings)?
Minutes
Attendees: ...Regina - Zisis, George, Andrei, Dan, Kieth, Alberta - Gilbert, Jan, Richard, JLAB - Elke, Elton, Tim
The discussion started with the inner (top) plate and possible machining after layup. It was decided that the layp total thickness tolerance of 1.5 mm would be achievable and acceptable for the installation proces. The variation can be accounted for by shimming the tracking chamber support rail on assy.
We will use the inner plates with the rail support holes on the "49th" module. These will be thru holes and will be plugged during layup.
It was decided to drill all the holes in the base plate (except the 4 end holes) prior to layup. The end holes will be machined after facing the ends at Alberta on the NC mill.
