Sphenix-tpc-l mailing list

[Ross Corliss <ross.corliss AT stonybrook.edu>]

(obviously the date for the 'next week' is wrong.  The links are correct, but please use your best judgment about when the next Wednesday is :)

-Ross

==========
Dr. Ross Corliss

If it's work hours, and I'm not in a meeting, feel free to look for me in my virtual office:
https://stonybrook.zoom.us/my/rossoffice?pwd=ZmZ2SlRIMVFvUUJwbUkyOVNVTmE5QT09

On Oct 20, 2021, at 11:38 AM, Ross Corliss <ross.corliss AT stonybrook.edu> wrote:

Dear All, 

The action items from today's TPC Engineering meeting are below, and the status document is posted on indico as usual:
https://indico.bnl.gov/event/11841/
As always, if you shared slides etc and haven't posted them yet, please do so before the next meeting for posterity's sake.

Our next meeting TPC Engineering meeting will be next week, at the usual coordinates: Wednesday, Oct 13, at 9:30AM Eastern:
https://indico.bnl.gov/event/11842/
https://bnl.zoomgov.com/j/1606777143?pwd=Nkd6ZWtGejlaR29xNnY1TFA3N3haUT09


-Ross

Anyone, if you have a procurement, call it out!  Tell Ross, Tom, and >>Ed<<
Bob will do vacuum (voltage?) test of QE of aluminum to confirm what laser power we need. 
Connor will check in on the status of the rack panel layout with Joe. 
Connor will finalize the diffuse fibers with the splitters and populated WW to make sure the length/routing is still valid.
Connor will flesh out the choreography to safely remove the installation pipe.  The concept of multiple support points looks promising, and more details are required.  This will be the focus after the TPC support is finalized.
Connor will give clearance to the TPOT footprint as much as possible in the TPC design
Connor will integrate FEE Cooling lines (1" diam) into the cable routing diagrams (away from TPC toward the recirculator)
Connor will keep the picture frame handy so it can be put on before cabling (Coordinate with Mike Lens) 
Connor will look for places where survey marks could be placed (to meet with survey folks before the end of July).
Connor will reach out to John H. about the expected accuracy of the iHCal and the magnetic field alignment.
Connor will route RG59 cables, one to each HV card (one per module) plus additionally four more (inner field cage north, outer field cage north, inner field cage south outer field cage south) aka the three small wire feedthroughs.   And will communicate with Tom and Joel to determine the full length of the HV cable.
John C. can assist in studying pretension of the tie rods to change their resonant frequencies, but he is time constrained.
John C. will track down the results from the load test of the ball bearings to see if that bears out the idea that the localized deformations are not a significant problem.
John K. will run the test to see if the 150/16 crystal is sufficiently stable, once the readout is stable.
RIch will complete detailing of the installation tube and begin to seek quotes
Rich will look at the choreography and ask John C or Chris for help on FEA/design if any of the elements for installation seem risky.  He will put a model together and contact Jim to distribute tasks as needed. 
Rob will check on when the PLC is expected to arrive etc.
Rob will keep us posted on gas rack news.
Ross, Tom, and all. will evaporate again when possible.
Takao et al. will incorporate an 'All needed tests have been performed' show-and-tell into an electronics meeting or otherwise, before Nov 1.
Takao or John H. will give updates on the Slice Test.
Takao will reach out to John K., ask him to provide a checklist of what has been or needs to be checked on the readout boards from the slice test in order to proceed with production. -- this is needed for a final design review anyway. (or procurement readiness review?)
Tom and Kristina will complete the design of the controller boards for the laser benches.  Once they have a footprint nailed down, Dan will revise the model.
Tom et al. will test voltages for the HV cards once the x-ray box is ready.  Resistors will be purchased after this test (they are a negligible cost overall)
When needed, someone should make the drawings from the models, get approval, and order.…Connor says ~2 weeks required after we start the process.  May want to tie additional things onto the panels, so want to complete routing before purchase.

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