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)

      Present: HA, SD, AS, AW, AM, BW, DK, FF, KN, LM, MM, TR, LV, JH
      Minute Taker: HA

      HA: <1.5% crosstalk observed for mupix10 routing, will be irradicated in MuPix11, more details next time.
      SD: more issues in the DAQ repository(growing), more came up with aria5, distribute work, hackaton before christmas to resolve most of these.
      AS: clear why it worked in the past and does not work now
      SD: most problems with Arria5, also many software changes since last use of Arria5, link b not working with mupix10 for arria5 (puzzeling)
      AS: send PSI a working setup, just do it
      Dohun and Thomas will take care
      AW: preparing testbeam at HIT next week.
      BW: glued more run2020 sensors, glued 3 more 100u run2020, first tests show good yield, new untested chip versions are now available, some bonds broke -> rebond
      LV: Any measurements planned?
      BW: look into the different amplifiers nmos, pmos, cmos ; get HiDR chips working, looks already promissing
      FF: Hock up SiPM to Szintillating tile (on going), need input from Hannah

      JH: nothing new as always
      LV: oh no

      LM: topic aside helping in the lab for HiWi?
      HA: data analysis --> David, next week
      MM: adapting noise tuning code(FPGA based) to MuPix10
      SD: is the code of the bachelor thesis available?
      MM: yes, need to go through this together and include it into the repository

      MM: news for kolloquium possibilities?
      AS: no, need to be granted on case to case basis, I will gather information, no time estimate, could be rather short notice

      Discussion about getting a certificate for bachelor, not possible ...

      TR: power supplies are beeing ordered, calibrated supplies required? ; visit at company for custom electronics connectors etc. with LV and Frank Schumacher; we need multi twisted pair cables, cables of the company not suitable, too large ; small number of custom connectors can be ordered to fit our micro twisted pair cables
      AS: get micro twisted pair cables from companies that CMS used (boundles) and hand it to the company to find a custom connector solution
      AS: maybe direct soldering the micro twisted pair cables is the best solution instead of a plug
      TR: set up meeting to discuss this matter with experts and discuss options: rigidity, connector side
      AS: soldering to interposer is baseline(?) ; connector makes things more modular

      TR: I need brass screws, to attache the inner tracker to the beam pipe --> 400€ (custom made)
      TR: do we need to check magnetic properties of the brass screws (magnetic susceptibility)?
      AS: need to measure or get the number from the company, but due to the ammount of material this is mostlikely not to worry about.
      TR: order multiple lengths, or buy longest and shorten in the workshop?
      AS: order fitting lengths, else only additional work
      TR: I have the offer, I will order them in December

      TR: SpTAB bond MuPix10 on an HDI after the meeting, HDI not perfect for the bonding onto the insert.

      AM: sends around her latest efficiency results

      LV: working on the detector adapter board with ASch, mostly size constraints

      AS: How is the Setup being send to PSI?
      LV: Parcel. I take care.

      Discussion of AMs: plot, (please upload)
      AS: need to reduce an under stand the noise to use the full range. 50mW was achievable on previous chips.
      HA: largest difference is the externally controllble cascode voltage, this might be the main culprit here
      AS: does the extrenal voltage create the noise
      BW: is not coupled in through this transistor but determined by the level apllied to the transistor
      AS: needs lab investigation and discussion with Ivan

      AS: what did you change to the last time to achieve the higher efficiency?
      AM: new time cuts etc. fixed some issues in the tracking.

      Meeting closed!

    • 14:45 14:55