General EEEMCal Meeting Summary 7/1/22

PARTICIPANTS: Aram Movsisyan, Artur Hoghmrtsyan, Carlos Munoz-Camacho, Hamlet Mkrtchyan, Hrachya Markyan, Crytur-USA, JMU, Joerg Reinhold, Josh Crafts, Renee Fatemi, Rosi Reed, Taya Chetry, Vardan Tadevosyan, Vladimir Berdnikov, Sasha Bazilevsky, Dmitry Kalinkin

EEEMCAL SCOPE TABLE

• Discussion about updates to table based on feedback from 6/23 meeting with EIC PM

• Recap of updates made:

• Added funding information
• Added assumptions of what comes from the EIC Project
• Added NPS project major institutions for comparison - there are 5 major institutions
• Added two new institutions: Ohio U., ACU
• With the two new institutions the EEEMCAL Consortium includes 12 major institutions

• Other items to consider adding to information collection: number of channels

• Endcap ~3200 channels
• Barrel >=8000 channels (= assuming light guide, > assuming no light guide and back face is larger than front face of block)

• Another example of similar systems built by universities: STAR EMCal endcap

• roughly 5 major institutions
• could be used as another example to illustrate

• Action items:

• send updated table to EIC PM
• invite OU and ACU to future EEEMCAL meetings

SIMULATIONS

• Simulation efforts are ongoing within EEEMCAL to make case stronger for the homogeneous BarrelEMCal and to optimize together the configurations/performances of the electron endcap and the Barrel EMCal

• Dedicated meetings focused on calorimeter simulations - next one scheduled for next week

• Friederike Bock will join contributing Fun4All knowledge on the calorimeter simulations

• The EEEMCAL simulation team:

• lead: Carlos
• presently contributing: AANL, FIU, U. Kentucky, CUA (focus on mechanical model), W&M (on AI/ML)
• interested in joining the meetings: JMU, Sasha B.

• Focus areas to make the Barrel EMCal case stronger

• pion rejection power with high efficiency for electrons
• separation power for pi0 from merged photons

• For pion rejection power the areas of optimization - related to the tails - are:

• material in front
• depth of calorimeter
• gaps between modules --> seems to be the main source of the tails in the Fun4All implementation and needs to be addressed going forward

• Gaps between modules - sufficient to have air or would a material be needed?

• Yes, a material should be used - carbon fiber

• Mechanical model details - contact Josh Crafts for model files

• currently working on developing model of light guides and PCB/readout electronics

• Optimization studies of both endcap and Barrel EMCal (U. Kentucky)

• general idea: follow the path of tracking and optimize endcap and barrel EMCal together
• developed a list of parameters
• need the simulation to run interactively - met with Joe O. and Jin H. about running Fun4All in this mode
• tracking can run interactively and fast; calorimeters take much longer

• Timeline of the EIC Detector-1 Calorimeter WG: decision on Barrel EMcal will only come after the July 2022 EICUGM

PROTOTYPES

• DESY: analysis ongoing of data from May 2022 run; another test beam period presently scheduled for 15 - 28 August

• initial results from May test expected at DNP
• possible goals of August test:

• finer granularity horizontal scan
• long SciGlass blocks - conflicts with the planned JLab prototype tests
• Crytur small prototype test - would require JLab electronics, but these have been shipped back

• JLAB: two main goals: 1) SiPM readout; 2) SciGlass long blocks

• preparations ongoing for the SiPM readout at JLab and Crytur - focused on different approach to SiPM array and PCB electronics
• preparations ongoing also for SciGlass - large blocks are being prepared

• AANL: constructing a prototype with focus on the low energy region (30-70 MeV)

• experiencing problems with Hamamatsu
• possible avenue through EIC R&D

NEXT MEETING: FRIDAY 22 JULY AT 8:00AM ET