Sphenix-tpc-l mailing list

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

Dear All,

The action items from this past TPC Engineering meeting are below, and the status document is posted on indico as usual:

https://indico.bnl.gov/event/11832/

As always, if you shared slides etc and haven't posted them yet, please do so for posterity's sake.

With the exception of Connor, who I hope will be on a beach somewhere warm, see you all at the next meeting, at the usual coordinates: Wednesday, Sept 1, at 9:30AM Eastern:

https://indico.bnl.gov/event/11833/

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.
Bob will talk with BS to find out the safe deadtime (propose 10us?)
Connor (before STAR work) will route the diffuse laber fibers and report on the optimal routes for each of the three lasers. (we do not insist that all three are the same length) A ballpark estimate is enough to write a statement of work.
Connor has Dan's significantly stiffer original design, and will run through that modal analysis and show(?) that it doesn't change the natural frequencies enough to be attractive.
Connor will check in on the status of the rack panel layout with Joe.
Connor will consider how 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 investigate the details of the picture frame connections (torque etc) for the FEA of the TPC support.
Connor will look at the exact height of the muID lip, see if clocking at that point during installation will help get the benches past it.
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.
Connor/Rich will, when ready, show the design of the support tube.
Luke will update us and supply some pictures of the x-ray box.
Nikhil will complete designs for the evaporatorshoe, octagon, and backbone, so we can produce the finished versions
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.
Rich will put together a stop-motion slide deck showing the installation steps, including choreography of how things come in from the outside world (clearing obstacles).
Rob Pisani will produce a slide on the gas failsafe passive and active alarms, what happens if the gasroom goes dark, etc for this meeting, and eventual propagation to Joel.
Rob will keep us posted on gas rack news.
Rob will proceed with the PLC purchase.
Ross and Nikhil will continue to talk to Bent about how to measure thickness
Ross et al. will produce shoe, octagon, and backbone so we can do a test fit and hopefully evaporate
Ross will reach out to Klaus and get the specs for the threading etc for the motor
Ross, Tom, and all. will evaporate again when possible.
Takao or John H. will give updates on the Slice Test.
Takao will move forward with populating cards in the absence of the frequency clock crystal (or as least confirm how much we can do without it).
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.
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.

==========
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

-- 
You received this message because you are subscribed to the Google Groups "sPHENIX_TPC_General" group.
To unsubscribe from this group and stop receiving emails from it, send an email to sphenix_tpc_general+unsubscribe AT stonybrook.edu.
To view this discussion on the web visit https://groups.google.com/a/stonybrook.edu/d/msgid/sphenix_tpc_general/C13E1234-9936-458C-9A31-2A47F7085D50%40stonybrook.edu.