65 nm meeting

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Bat 20 - uElec (https://cern.zoom.us/j/69600555186?pwd=eVcxUTBnc2J0bWwyQ3RBM0ttZkN6Zz09)

Bat 20 - uElec

https://cern.zoom.us/j/69600555186?pwd=eVcxUTBnc2J0bWwyQ3RBM0ttZkN6Zz09
Cacher
  • MOSS design, Fred
    • submission postponed "before summer"
    • standard cells, first release achieved => Gianluca asked for a discussion to review modif choices
    • Need for the next generation of the matrix read-out block
      • improvement expected on compactness, but not detailed
    • Question about LVS status: not clear to Fred

 

  • MOST design, Szymon
    • same difficulties than MOSS / delay
    • Szymon is working on the required modif for pixel biasing => quite the heavy task
    • Note: dedicated meetings are on Thursday morning

 

  • CE65v2, Andrei
    • small sensors are expected 25th May
    • version C (for charge) is fully ready (LVS, DRC with some violations)
      • 15 sensors: 5 pitch/arrangement x 3 sensing nodes (std, N-implant with gap, N-implant continuous)
      • single front-end AC-Amp, can be used to emulate DC-SF and DC-Amp
      • new advised pad ring not used: not possible
      • to be send tomorrow and wait for Walter's feedback
    • seems improbable that CERN would share the pixel front-end used in MOSS
      • no manpower at CERN to work on any adaptation
    • Question about preliminary observation of RTS in CE65 test: should we adapt transistors?
      • there are 3 flavours of transistors, any use of them?
        • could be done if we decide it
      • APTS never reported that, they use the LV transistor flavour (CE65v1 uses HV 3.3 transistor)
        • Sergey remembers that kind of RTS noise was at least mentioned once

 

  • Test beam, Sergey, Yitao
    • issue with acquisition (de-sync of CE65) solved by workaround (throwing empty events)
      • detail: USB overflow happening from time to time
      • experts (CERN, Cagliari) has to investigate
    • Already covered:
      • A4, B4, C4 at HV=10V
    • To be done remotely
      • C4 HV=10V, Psub=-3V
      • C4 HV=0V, Psub=-3V
    • Sergey back to CERN in Friday afternoon, beam stops Wednesday morning
      • 4 days of data taking
      • 1 day = 2 chips
    • Program from Friday (Sergey back to CERN)
      • Priority 0: D4 at HV=10V (will finalize our MAIN priorities)
      • Priority 1: A4, B4 HV=1,2,3,4V on AC-Amp
      • Priority 2: irradiated chips if working at all
    • About irradiated sensors
      • TID on B4 can be studied in lab: 100, 500 MRad
        • all DC-SF, DC-Amp, AC-Amp with HV=10V
      • neutron irradiated: 1e15 neq/cm2
        • 2 sensors available of each flavour A,B,C,D
        • std program for all sensors at HV=10V and also Psub=-3V
        • will be tested Saturday
    • What to ask to Yitao
      • Note that with EUDAQ, correlation DUT-tracker can be checked
      • tune signal cuts and geometrical cuts and cluster size (5x5) to get Landau distribution, starting with B4
        • then gross efficiency and resolution
        • then move to A4, D4, C4
      • Get noise maps from runs without beam
    • About the issue with DAQ
      • request to Miko to get one ALPIDE (and needed telescope parts) at IPHC and exercise the acquisition
      • under discussion between Sergey and Miko

 

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