Meeting ITk LPNHE

→ Europe/Paris
Higgs 12-22-2-28

Higgs 12-22-2-28
Francesco Crescioli (LPNHE), Giovanni Calderini (LPNHE Paris), Reina Camacho Toro (LPNHE)
Description

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https://cern.zoom.us/j/94940524377?pwd=dnI4NnZUWGNMN1ZpRFJncFU1ZlMrQT09

 

Cacher

Presents: Thibaud, Pascal, Marc, Cyrille, Stephanie, Giovanni, Paul, Thiziri, Bhuvan, Francesco

General news:

  • Electric cut tomorrow, we need shut down everything
  • Organization for the JO: we asked a feedback from ITk and should receive a plan this week or the next

Probe station:

  • Liquid ordered 20 kg. To be checked with the administration
  • Visit from Strasbourg tomorrow to look at the probe station
  • Weird IV with the old probe station: at first it was ok and then in breakdown without touching anything on the setup

Wirebonding:

  • Wire was stuck in the tool and the tool has to be demounted, cleaned and re-mounted. It doesn't work now
  • Might be the little screw. We have 20 of a lot for which we have a doubt.
  • We need to find a torque-screwdriver with the correct head
  • Cyrille has modified the program for the new tool
  • IZM-HPK modules left to bond: 2. Bad alignment (+ 1 with glue seepage)
  • Leonardo-HPK: PPP50 will be ready to be bonded soon
  • Air can is giving issues of condensation

Assembly:

  • Bhuvan, Cyrille and Stephanie glued PPP50 (Leonardo-HPK). Nothing weird to report
  • Mass is OK, Alignment is OK, Envelope is OK
  • We found the strain relief for the OBWBP
  • A glass dummy with OBWBP has been glued but we had issues gluing the strain relief (it was left on the gluing tool)
  • Backside photo safety device v2 produced by Yann, to be tested

Metrology:

  • Foresee a mainteinance of the big vacuum pump. Yann is going to buy a mainteinance kit
  • Programs are well organized in directory now
  • Reference planes program updated (13 micron higher plate, all is good now)

Parylene masking:

  • IRFU tools here (borrowed). They work very well. Two modules parylened
  • We need to develop a strategy to take photos. Then we need to add photo on the localdb
  • The little caps we should have 100s. To be produced.

Testing:

  • Vacuum covers done by Yann
  • PPP40 is done
    • Protocol changed a bit and we need to review scripts and general strategy
    • Localdb issues, fixed on the go with the experts
    • Columns issue but stable with temperature
  • Digital89 has issues on the LP tests. To be investigated.
    • Blocker on SQ for block 11. Expert priority.
  • Proposal from Thibaud: do a Trubleshoot section

Xray:

  • Very slow to reach safely -15 C. Consumed a lot of Nitrogen!
  • Flow regulator?
  • Tested the very little area cup
  • To be tested: bigger tent (to include also the chuck itself)
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