View source for General EEEMCal Meeting Summary 6/16/23

Participants: Cristiano, Sasha, Carlos, Larry, Carlos Y., Tanja, Hamlet, Julien, Renee, Hrachya, Julie, Artur, Rosi, Joerg, Olivier (Crytur-USA), Ioana, Vardan, Yeran, Dmitry


SIPM SPECS DISCUSSION (All)

* EIC Project requests SiPM specs table for EEEMCAL: [https://brookhavenlab.sharepoint.com/:x:/s/EICPublicSharingDocs/EQQCeLzF9ZJHqoeKsSsp29cBwyoFKEnDMcghuQJnfep-NQ?e=LGpvDX Official spreadsheet at this link] 

* Voltage is important if light is not mixed up well - for crystals the light is mixed well and uniform and not much sensitivity is expected

* Variation of operating voltage of tray
::* Current design has an array of 3x3 or 4x4 SiPMs in a matrix with one output per matrix
::* May need to comment on sensitivity to gain variations between individual SiPMs - check JLab studies

* When listing specs keep in mind the variations - tolerances
::* Efficiency cannot be changed by changing operating voltage

* SiPM review is expected for July 2023

* Action Item: collect all documentation on tests carried out at IJCLab-Orsay and JLab and check table entries


ENGINEERING UPDATES (Julien)

* One of main focus areas is clearances with other infrastructure, e.g., the beam pipe and the DIRC frame - discussions are ongoing between EEEMCAL representatives (Julien, Jim, Josh) and the EIC Project technical team

* One the integration/installation side of the EEEMCAL into the DIRC frame the rails option is being studied in details
::* assembly depends on positioning of the rails

* Overall, need assembly space at BNL for the EEEMCAL 

* Discussion about space for cables and stress on cables in the assembly
::* general idea is to use stretchers, but more studies are planned


EEEMCAL ORGANIZATION (Tanja, Carlos)