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[Glenn Young <glennyoung82251 AT gmail.com>]

Dear Ross, all,

Did anyone from EMCal (e.g. Sean S) contact you, Connor, etc about the picture frames?
There was a question about access for connecting cables and cooling pipes for EMCal and whether the upper inner radius of the picture frames could be enlarged for this?

Longer term - I'd like an idea of the sequence for adding GEM modules and FEE to the end wheels once the wheels are attached to the field cage.

When do you need FEE cards?
Do you want to have one set of FEE cards that move around from sector to sector as you test things or is the preference to install a set of FEE cards on a sector and leave them there in perpetuity?  I ask because the 150 MHz oscillator chips needed for the FEE cards won't appear until perhaps late April and have to be added by hand to the FEE cards, thus mass arrival of FEE cards won't happen until May.

Regards, Glenn

On Wed, Jan 19, 2022 at 11:20 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/14423/
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, January 26, at 9:30AM Eastern:
https://indico.bnl.gov/event/14424/
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. 

Chris Runyan will review the FEA model of the pocket plates during the installation (because the  I beam is less stiff than the tube had been).

Connor will check in on the status of the rack panel layout with Joe. 

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 James Eksi to see what parts they could make for the cart tube lift.  (keep Dan in the loop in case other items downstream need to be moved elsewhere to keep schedule.)

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 will send the picture frame drawings to the EMCal folks for final approval.  Should have that by the end of the week.

Connor, Rich, and Chris will work on putting together an installation document to help Chris P.  (This will also be part of the 'must have' documentation).

Dan will reach out to the TPOT folks and seek a proposal of how they plan to connect to the TPC cooling.

Dan will revise the stand-offs for the controller board.

John C. will consider where we want to put accelerometers (and strain gauges) in order to monitor vibration of the TPC during transport and operation.  To be discussed in early January.

John K. will run the test to see if the 150/16 crystal is sufficiently stable, once the readout is stable.

RIch will follow up Tom's emails to James and give quantities.

Rich and Chris will add a stand-in part to the package for the full I beam so we can do the shimming in the clean room without the full beam present.  They will need some way to clamp it at the right height.

Rich will present the lift (using a strap on the open end of the tube and the front plate on the other side) in early January. 

Rich will send Jim a summary of the Xometry quote for the installation tooling.

Rich will send installation tooling drawings to TSI

Rob will check on when the PLC is expected to arrive etc.

Rob will keep us posted on gas rack news.

Ross et al. need to identify a SPECIFIC place to assemble this at BNL.  He will reach out to Connor about this (A table in strumentation?)

Ross et al. need to identify a way to survey the finished CM. (Discussion with the C-AD survey folks maybe?  Matt Illardo)

Ross and Nikhil will evaporate again when possible.

Takao or John H. will give updates on the Slice Test.

Tom and Dan need to touch base about the order for the piezo ceramic disks, and mechanics in general.

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)

Tom will contact Debrecen about the waveform pickoff for the bottom GEM / photodiodes, to see their status (and whether we need a backup plan)

Tom will get a fresh quote/delivery estimate on a pocket spacer.  (midle part of the pocket assembly)

Tom will schedule a time to talk to Gabor (Debrecen group arrives on the 29th)about the diode readout.

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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