Heidelberg weekly meeting - different time slot! (due to PI Christmas party)

03.410 (Physikalisches Institut, Heidelberg)


Physikalisches Institut, Heidelberg


For Vidyo please use room extension 10823320 or use this link.

    • 10:00 10:45
      Round Table 45m

      Reports of work progress

      Speakers: Adrian Herkert (Physikalisches Institut, Uni Heidelberg), Alena Weber (Universität Heidelberg), Andre Schoening (University Heidelberg, Institute of Physiscs), Annie Meneses Gonzalez (PhD Student), Benjamin Weinläder (PI Heidelberg), David Maximilian Immig (Universität Heidelberg), Dohun Kim (Physikalisches Institut University of Heidelberg), Frank Meier Aeschbacher (Universität Heidelberg), Heiko Augustin (PI Uni Heidelberg), Lars Noehte (PI Heidelberg), Luigi Vigani (University of Oxford), Lukas Mandok (Physikalisches Institut Heidelberg), Sebastian Dittmeier (Physikalisches Institut, Universität Heidelberg), Thomas Theodor Rudzki (Physikalisches Institut Heidelberg)

      Present: Andre, Thomas, Annie, Lukas, Luigi, Sebastian, Benjamin, Lars, Heiko

      Minute-taker: Sebastian


      • Luigi: DAQ week report:
        • can send commands for Chip and Board DACs via MIDAS
        • February testbeam planned for integration of the three subsystems
        • Configuration for sensors stored in the ODB right now
        • Andre:
          • PixelDACs might need to be stored elsewhere, especially if we tune the sensors
          • Concept for that to be developed
        • Probe station: vacuum tool to keep the sensor in position currently being thinned in the workshop
        • Andre:
          • We want new probe card for MuPix10
          • Who is going to do it? Can UK institutes do it? Maybe Liverpool or Bristol?
          • We first need a MuPix10 documentation -> Lars is soon getting stuck with design -> Help by Heiko?
          • We could also do it with ATLASPix3 to get the yield
          • David: Current yield with ATLASPix3: from 15 chips, 11 working (could also be due to handling)
          • If we do MuPix10 probe card for March, maybe extra effort for ATLASPix3 probe card not needed
          • For Quad-modules would be nice, but could also be done with MuPix10? With ATLASPix3 we could do it now
          • Proposes a new system for Quad-modules/Telescope (Photo attached to agenda) for beam monitoring
      • Annie:
        • Finished simulations for Jens (about what?)
        • Trying to find temperature dependence in leakage currents
      • David:
        • Reworking analysis with new GEO ID files
        • Andre: Preparation of software/firmware for the next testbeams
          • Plans for Testbeam:
            • Power everything with DC/DC converters
            • Timing -> in the lab first
            • Running on different frequencies -> improve the software for that, we have to define tasks, David willl work on the software
          • Operation at full-speed is an issue, it is not very stable
          • Tasks to be shared in lab tests + testbeam analysis between David, Dohun, Lukas
          • Maybe with ATLASPix3 in sorter (Sebastian)
          • Have to get rid of frame borders in analysis software
            • Schedule discussion on issues with analysis plots for first meeting next year
      • Thomas:
        • Conclusions after the testbeam:
          • DC/DC powering is working
          • Check that electrical load is not filtering too much in the lab
            • Andre suggests to use a capacitor parallel to the resistor (photo attached) to maximize ripple between voltages (VDD, VSSA, GND)
          • Power multiple chips with one DC/DC
        • Idea for first ladders with silicon heaters, to be constructed in January:
          • Single heater flexes test, then go to bonding ladders
          • @PSI: tester for all connections being developed, can test in steps of bonding chips one after the other; will be shipped to HD in January
      • Andre:
        • Two wafers (200 and 80 ohm cm sensors MuPix8) are sent to Optim for thinning to 50 um
    • 10:45 10:55