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Executive summary:
- Next meeting: Tuesday 12 June at 5 CERN/4 UK/11 AM Eastern
- Meeting focus: production flow timing and process controls
- "How long will it take to construct a stave, from reception to shipping?"
- Check the mail for "homework," particularly for glue protocols (Gerrit/Jens)
- Update from discussion with Bernd last Thursday (next discussion this Wednesday, 13 June)
- Our action items list
Details below. Thanks everyone.
--
First, welcome, Zach, to the Stave Assembly community! We are happy for you to come on board. Zach will transfer from CERN to BNL in a few weeks. He's currently exploring how to interact with the ITk Production Database as a user, familiarizing himself with the nomenclature and variety of tests before he dives in on loaded stave QC, particularly on the electrical side.
We will meet again on Tuesday 12 June 2018 at 5 PM CERN/4 PM UK/11 AM Eastern, based on the doodle poll results. This meeting will focus on production flow timing and process controls. In particular, we can plan all the tests we can imagine -- they will still have to occur within our 2 staves/week production time limit.
In addition, we decided at the last meeting to pay special attention to our glue procedures (see "Glue-related" list under our Action Items). Gerrit, it would be useful to know more about the US plan for de-gassing with the new mixer system and how the mixer system works. Jens, do you have any thoughts on the batch testing frequency given the 6-months' shelf life of the glue?
Based on conversation with Jens and Bernd, we came up with some rough time estimates for each stage of stave assembly. I will integrate these into the slides to coincide with existing production flow testing section. Thus, as we want to keep the meeting short, we will start again ~slide 24.
Lastly, a short update on last Thursday's discussion with Bernd and Jens:
- Continuing to integrate staves and petals into a cohesive framework for the full Strips QA/QC Workshop meeting in Oxford
- We will send out a standardized table in Tony's format to the community on Monday, one week in advance of our presentation
- Jens and Bernd are developing descriptions of the tests by Sunday night
- We will deliver a unified presentation in Oxford. I am preparing that material in advance of another meeting on Wednesday with Bernd & Jens
Finally, we have our action items status report. Green means the action item is done (at least for now), while orange means it's partially complete and red means in dire need of attention:
- Action items
- Review summary slides and update with your thoughts (Laura, Jens, Gerrit, Dave, Gabriella)
- https://docs.google.com/presentation/d/1avP2AoiZYoNowDMQeG4fgVd6hTVdPzoMvl1brDk44so/edit?usp=sharing
- In particular, Jens/Gerrit/Dave - try to fill in the gaps where mentioning {Jens}/{BNL}/{Gerrit}
- Gaps include
- Pull tester plans details
- Local support handler system for wirebonding
- Glue-related (Gerrit, Jens, Laura)
- Frequency of Glue batch testing - need to define this
- Glue degassing procedure plan
- Gerrit to fill in his details on how he deposits the glue from pre-mixed cartridges
- Precision scale for full stave mass vs mass of glue syringe vs volumetric dispensing
- US glue measurement test on 13-module stave [[not immediate]]
- Weigh syringe before/after & see how easy this fits with assembly system
- US glue measurement test on 13-module stave [[not immediate]]
- Mechanical tests (Dave)
- Envelope test equipment and procedure
- Other mechanical tests as QA? QC?
- Dave's outcomes are available in a gDoc (many thanks, Dave!!) and were reviewed in our last meeting. They are slowly being integrated into our various other documents
- https://docs.google.com/document/d/1eC9-i1urrvvJTvwBlVFIS2mXMO5IJAbUVlJgd_AywB0/edit?usp=sharing
- Investigate SmartRay 3D line scanner (Jens)
- Database inputs and file size constraints (Zach?)
- I added Zach Schillaci to this group as well. He is currently looking into database integration, having met with Andy Blue on Thursday morning. Perhaps it's a natural fit for him to look at limitations?
- Things to remember in the background:
- Bond wire height specification (Jens, Gerrit? Alessandro?)
- EOS testing plan (P. Goettlicher, M. Stanitzki)
- Encapsulation and plasma cleaning: advantages, disadvantages
- Review summary slides and update with your thoughts (Laura, Jens, Gerrit, Dave, Gabriella)
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