65 nm meeting

mercredi 11 mai 2022, 10:30 → 12:30 Europe/Paris

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

• 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

 

1 Test discussion

Orateurs: Andrei Dorokhov (IPHC), Dr Serhiy Senyukov (Institut Pluridisciplinaire Hubert CURIEN (IPHC)), Szymon Bugiel (IPHC), Yitao WU (USTC & IPHC)

2 MOSS design

Orateurs: Frédéric MOREL (IPHC), XIAOCHAO FANG

3 MOST design

Orateur: Szymon Bugiel (IPHC)

4 CE-65++

Orateur: Andrei Dorokhov (IPHC)