Heidelberg weekly meeting

03.410 (Physikalisches Institut, Heidelberg)


Physikalisches Institut, Heidelberg


We will have the meeting via Zoom: https://cern.zoom.us/j/92591061032?pwd=MkZzY2g1cG1YZGFwK244c210dk44dz09

Note: this is a temporary room until we get the institute account.

We will keep HeiCONF as a backup: https://heiconf.uni-heidelberg.de/sch-nqu-dd2   Access Code: 858824

Vidyo will be used as a back-up. Room extension 10823320 or use this link.


Tentative minute taker list at https://docs.google.com/spreadsheets/d/15oo_a_1WPxPBOtlH0LDEKG1128y1O2lfswpUAvPCQOY/edit#gid=0

    • 16:00 16:45
      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) , Florian Frauen, Frank Meier Aeschbacher (Universität Heidelberg) , Heiko Augustin (PI Uni Heidelberg) , Lars Noehte (PI Heidelberg) , Luigi Vigani (University of Oxford) , Lukas Mandok (Physikalisches Institut Heidelberg) , Marius Menzel, Sebastian Dittmeier (Physikalisches Institut, Universität Heidelberg) , Sebastian Preuß (PI Uni Heidelberg) , Thomas Theodor Rudzki (Physikalisches Institut Heidelberg)

      Presentation Luigi: Interface Board Concept

      • Adapter board has triple jumpers to choose the line for a certain signal
      • Thomas will 3D-print mockup probably over the weekend
      • Monex cables should be as short as possible, but minimum is probably 15cm


      Stephan Lachnit is here for the first time as a Bachelor student


      Presentation Alena: Update to Hitcounting 

      • an error in the data preparation was fixed for the future but old data has to be analyzed again
      • now the results are better:
        • less noisy
        • smaller errors
      • the Error does not affect the adder mode that much
      • ISO Counter:
        • Good results, but high uncertainty in some plots
      • edge bins are higher probably due to charge sharing
      • 5 hot pixels all in the same row
        • hard to understand but maybe crosstalk?
        • Alena will check more hitmaps to check if this happens more often

      Round Table

      • Dohun
        • needs more data
      • Stefan Lachnitz
        • has set up all the accounts he needs so far
        • needs safety rules introduction -> Dohun will ask Sebastian Bachmann
      • Heiko
        • irradiated sensors are not out yet -> worrysome
      • Luigi
        • working with workshop on integration of mockup
        • frontend-board is running
      • Anni
        • worked on presentation
        • will check some numbers for Mr. Schöning
        • one can change the simulation to alpha with minor adjustments
        • noise data from lab differs strongly from testbeam
          • David: maybethe machines around influence noise
          • Heiko: compare with Sr-90 source
          • Schöning: We have to go to testbeams and establish procedures for masking hot pixels so we can go to lower thresholds
            • David: can go only lower with threshold after tuning
      • Benny
        • tried to improve settings for run2020 sensors
          • less noise at version1 and 2
          • comparator dacs are crucial
          • did not work that well with version 5
        • ordered more MuPix inserts
      • David
        • server problems: tmp runs full as many people copy or analyze files
          • we should upgrade the ssd
          • modified analysis software so it needs less space in tmp
          • Schöning: we should do a cron job to clean up tmp regulary
        • analysis software should work for single setup -> test at Florians setup
      • Florian
        • Mupix is inducing tile noise
          • it vanishes if you put aluminium foil between the two
          • isolating just the cable does not work
            • Jan: try a run without tile to see where the noise is induced
            • Dohun try positioning of the tile
        • checked different tiles but all of them have "bad" shadowmaps
      • Jan
        • has to wait for test results
      • Thomas
        • Problems with bonding: XY movement is blocked
          • we could bond in ASIC Lab short term?
          • we could ask Peter Fischer since the owe us a favour
          • Schöning: we should buy a less old second hand bonder long term
        • it is hard to ship to UK or vice versa: long waiting times


    • 16:45 16:55