Heidelberg weekly meeting

03.410 (Physikalisches Institut, Heidelberg)


Physikalisches Institut, Heidelberg


We will have the meeting in HeiCONF: 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

    • 14:00 14:45
      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), Marius Menzel, Sebastian Dittmeier (Physikalisches Institut, Universität Heidelberg), Sebastian Preuß (PI Uni Heidelberg), Thomas Theodor Rudzki (Physikalisches Institut Heidelberg)

      General info: Andre will be back in Heidelberg in 2 weeks

      round table:


      • Mupix10 Wafers arrived on mondey, in total 11 - they are allready picked by Luigi, Heiko, Benni. 
      • Already some 
      • 3 Wafers were picked by some guys from buchum which took the Sensors to Bochum 


      • Had a look for solutions for the fpga bords: new Sellers found (Elustra: FPGA on small boards, not expencive, Arria10 for 500$) - need to have a closer look because there are many options/choices 
      • The Idea of having a base board and a additional fpga board is interesseing as the fpga can be exchanged easily
      • Lars sets up a Arria5 Setup at PSI - incontact with Thomas and Dohun 


      • Presentation: Measurement with Sr90 with HitCounting Chip
      • Not yet more comparisons between the normal and the ISOHit version (Iso has a slightly lower breakdown voltage)
      • Chips are not thinned - effects on efficiency 
      • Andre: Any plans for run2021: not all chips are working yet so no conglusion but the hitcounting chips work good so the will be prob. continued


      • working with the data of the run2020 testbeam 
      • problems in the code: right now she sees a efficiency is at ~80% (similar to the result from lennard)
      • Compaire the code with data of Mupi10 where the efficieny of 99% is allready known.
      • Andre: dealing with Atlaspix1 papre draft: should be annies work included? Annie sent some of her results to Adrian already but its not clear what should be used.  


      • Busy with picking run2020 and Mupix10 sensors
      • start looking into pcb design of the frontend card from Alex
      • Problem with the connectoron the new pcb: was found on the loop-back card: the support strucktur of connector could not fully be placed on the board, leading to some population problems - should not occur on the frontend card.    This should be checked with Frank Schuhmacher - was already checked with Dirk


      • Works on the Arria5 setup - at first it seems to work but now there are Problems and it does not work anymore
      • Will continue to look into this the upcoming week
      • Questions: if no sensor is connected normaly 8/10bit errors can be seen in the nios but for this setup this is not true - Sebastian: when no chip is connected it is not quarantied what happens because the input is floating - should not care about that 
      • Problem with the setup: The chip worked in the first day and is still working on Florians setup - now the sensor can not be configured anymore - when the problem was first seen nothing was changed on the setup, since then the scasi cable, trancseiver card was exchanged, fpga firmware was reloaded
      • Test with the new Arria5 and with Mupix8 - if this is not working a meeting should be arranged


      • Designed a prototyp for the tile case - found already some changes which has to be done 


      • nothing to report


      • The plan for the upcoming weeks should be made


      • arranged a meeting with the companie for the cabeling
      • Are we sticking to micro twisted pair or can they present their products? (they have some own version with a teflon cable inside)  - stability is not a crucial feature 
      • one should asked them aboud impedance and if they have ideas how to optimise the impedance of the whole setup
      • A first Mupix10 is already clued on a HDI, have to be bonded  - first: check if its working, then define for what the HDI should be used - do we have to order more HDIs?


      • Probcard investigasion: still now results, still problems - a new probcard will be populated with less needles (probcard light)
      • worked on the Datebase 
      • LTU is makeing the plan for next year - they need a lot Kapton 25um 35m2- will be send to them by us  via gsu

      coll meeting next week - Luigi should organise an update also from the uk side 


    • 14:45 14:55