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), Stephanie Beauceron (LPNHE)
Description

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

 

Presents: Paul, David, Francesco, Stephanie, Pascal, Yahya, Reina, Marc, Julien, Thiziri

General news:

  • We will presented as production ready at the PRR
  • We will receive production BM and preproduction flex to assemble V2s during the summer (after JO)
  • We received material (carriers, chuck)
  • We need to make an inventory/empty the space in the drawers / cabinets

Wirebonding:

  • No activities on ITk
  • Joystick will be unmounted to mainteinance

Wirebond protection:

  • Step-1 is qualified
  • Step-2 ongoing: glue on a PCB or dummy and measure the resistance
    • Test 1 on PCB: resistivity is out of spec by one-two orders of magnitude (1k on one side and 400 ohm on the other)
    • Test 2 on Dummy: resistivity is better GA1 175 ohm, GA4 is 52 ohm
  • We glued a new dummy for the next test

Probe station:

  • Cooling liquid received
  • Agilent still not fully operational, to be tested
  • IV missing for 2 V1.1 modules

Assembly:

  • No news

Testing:

  • Thermal cycle chucks are received
  • Gasket are not functional, they can't keep the vacuum
  • Ask the reference for the material to cut the gasket ourselves with the Cameo
  • There's a number of tests to be done for the full installation
  • Measurements done for the dewpoint but not clear what is happening, target temperature is not reached
  • Interlock for the dewpoint need to be implemented (partial software) but we could present the issue at Saverio meeting

X-ray

  • Measurements taken
  • Humidity control is yet to be fully mastered

 

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