Difference between revisions of "General EEEMCal Meeting Summary 6/16/23"

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(Created page with "Participants: Cristiano, Sasha, Carlos, Larry, Carlos Y., Tanja, Hamlet, Julien, Renee, Hrachya, Julie, Artur, Rosi, Joerg, Olivier (Crytur-USA), Ioana, Vardan, Yeran, Dmitry...")
 
 
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SIPM SPECS DISCUSSION
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SIPM SPECS DISCUSSION (All)
  
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* EIC Project requests SiPM specs table for EEEMCAL
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* EIC Project requests SiPM specs table for EEEMCAL: [https://brookhavenlab.sharepoint.com/:x:/s/EICPublicSharingDocs/EQQCeLzF9ZJHqoeKsSsp29cBwyoFKEnDMcghuQJnfep-NQ?e=LGpvDX Official spreadsheet at this link]
  
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* Voltage is important if light is not mixed up well - for crystals the light is
+
* 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
 
* 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)
 +
 +
* Request from EPIC to provide a first draft of work packages and organizational structure
 +
 +
* Discussion of two slides put together using existing material and adding in international institutions
 +
 +
* Action items:
 +
::* Update the chart directly so it looks nicer (Julie)
 +
::* Update the numbers on page 2
 +
 +
 +
ELECTRONICS READOUT (Olivier)
 +
 +
* Collaboration of Czech/US governments
 +
 +
* Aim would be at next generation of prototypes with 6mm x 6mm SiPMs and larger array, e.g., 5x5
 +
 +
* Proposals are due on 19 July and funding starts in early 2024
 +
 +
* Next: need a letter of intent
 +
 +
* Scope of work
 +
::* Crytur: electronics, build prototype
 +
::* BNL/JLAB: receive prototype, evaluate - possibly with beam, tests
 +
 +
* Action item: follow up on this with EIC management
 +
 +
 +
PERFORMANCE SPECS
 +
 +
* Crystal specs - have been transmitted. Review will be beginning of July
 +
 +
* Dedicated meeting on constant term is being planned - calibration, monitoring etc.
 +
 +
 +
 +
NEXT MEETING: FRIDAY 23 JUNE AT 8AM ET

Latest revision as of 09:09, 19 June 2023

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)

  • 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)

  • Request from EPIC to provide a first draft of work packages and organizational structure
  • Discussion of two slides put together using existing material and adding in international institutions
  • Action items:
  • Update the chart directly so it looks nicer (Julie)
  • Update the numbers on page 2


ELECTRONICS READOUT (Olivier)

  • Collaboration of Czech/US governments
  • Aim would be at next generation of prototypes with 6mm x 6mm SiPMs and larger array, e.g., 5x5
  • Proposals are due on 19 July and funding starts in early 2024
  • Next: need a letter of intent
  • Scope of work
  • Crytur: electronics, build prototype
  • BNL/JLAB: receive prototype, evaluate - possibly with beam, tests
  • Action item: follow up on this with EIC management


PERFORMANCE SPECS

  • Crystal specs - have been transmitted. Review will be beginning of July
  • Dedicated meeting on constant term is being planned - calibration, monitoring etc.


NEXT MEETING: FRIDAY 23 JUNE AT 8AM ET

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