General EEEMCal Meeting Summary 7/12/21

PARTICIPANTS: Bruno Jorion, Carlos, Irina, Miroslav, Nathaly, Pete, Renee, Crytur-CZ, Douglas, Hamlet, Hrachya, Julien Bettane, Rosi, Vardan, Vladimir, Tanja, Joerg, Lei, Sasha

EEEMCAL IN DETECTOR PROPOSALS

• Detector looks similar in all three proposals

• differences in size and number of PWO vs. Glass
• there may be differences in attachment - ATHENA and ECCE assume mounting on universal frame; CORE has been assuming mounting to endcap HCAL frame, but recently moved away from it - CORE more sensitive to impact of non-sensitive material regions

• ATHENA:

• z = 195cm
• R_in = 11 cm (eta ~ -3.5) = R_min_PWO
• R_max_PWO = 53cm (eta ~2) = R_min_Glass
• R_max_total = 100 cm (eta ~ 1.4) = R_max_Glass

• Modules PWO = ~ 2200 (2 x 2 x 20 cm3)
• Modules Glass = ~ 1400 (4 x 4 x 40 cm3)

• Total weight: ~ 2400 kg

• If assume all PWO for this volume: 7600 PWO modules

• Weight ~ 7000 kg

ECCE:

• z = 190 cm
• R_min = 11cm (eta ~3.5) = R_min_PWO
• R_max_PWO = 49cm (eta ~2) = R_min_Glass
• R_max_total = 57 cm (eta ~1.9) = R_max_Glass

• Modules PWO = 1680 (2 x 2 x 20 cm3)
• Modules Glass = 160 (4 x 4 x 40 cm3)

• Total weight: ~1500 kg

• If assume all PWO for this volume: 2960 PWO modules

• Total weight ~ 2000kg

CORE

• z
• R_min
• R_max

SIMULATIONS

• Tolerance material in front of EMCal - ongoing studies

• e/pi studies ongoing

• ECCE produced some simulation data samples that are used for these studies

• implementations - completed

• barrel SciGlass (Nathaly)
• EEEMCAL Fun4All (Carlos)
• EEEMCAL DD4HEP (Vladimir/Dmitry)

• ATHENA simulation campaign planned for August

• Will include hybrid EEEMCal

• ECCE simulation campaign 21 June uses PWO only EEEMcal and sphenix barrel EMCal(?) - does not yet have EEEMcal hybrid or SciGlass barrel

• hybrid EEEMCal and Sciglass barrel will be in next ECCE simulation campaign

DESIGN EEEMCAL

• Initial design prepared

• Cooling would be water cooling around circumference plus possible mechanical cooling from the back

• must also take into account cabling from back

• Beam pipe characteristics around the detector - diameter etc.

• Main questions:

• beam pipe
• support limitations at universal frame
• thickness of outer and inner radius

• Action items:

• prepare summary of questions
• discussion with EIC PM

PWO+SIPM DETECTOR UPDATE

• Found a way to include 16 SiPM per crystal

• Discussion about services and integration for beam test

• Action item:

• prepare list of services needed for discussion with HallD electrical engineer

BEAM TESTS 2021

• Link to beam tests: https://wiki.jlab.org/cuawiki/index.php/EEEMCal_Beam_Tests

• If planning to participate please contact:

• For DESY tests: Douglas Hasell
• For JLAB tests: Tanja Horn

NEXT MEETING: MONDAY 26 JULY 2021 AT 8:30AM ET