General EEEMCal Meeting Summary 6/28/24

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PARTICIPANTS: Carlos, Julien, Sasha, Douglas, Hamlet, Joerg, Julie, Justin, Larry, Renee, Roland, Rosi, Tanja, Vardan, Roland, Hrachya, Ioana, Gerard, Tristan Protzman, Dmitry,

DISCUSSION OF MECHANICAL DESIGN

• Main question is the attachment of the EEEMCAL to the main frame

• some

• Main mounting is on the carbon fiber tube

• Idea is that all inner detectors are encapsulated on a carbon fiber tube

• this tube is attached to a frame that is attached to some support that attaches to DIRC frame and goes out to barrel EMCAL
• tube slides into the inner detector
• easier for cable management
• there has been discussion to cut the carbon tube short and install EEEMCAL separately (because it's so heavy compared to all the other detectors)

• Andreas Jung is in charge of carbon fiber tube

• working with an engineer

• Installation sequence: install EEEMCAL into carbon tune on rails (all cables installed prior) and then EEEMCAL cables will be routed

• plan is to have all cables be inside the tube
• they somehow go between pfRICH and EEEMCAL

• Carbon fiber tube is 1cm thick - should be included in the simulation

• Carbon tube is not in the simulation as far as Dmitry knows - what is in the simulation is a cone that represents the services cables
• Action: follow up on that (Roland)

• Question about empty space radially at z-location of the EEEMCAL (micro Rwell ends before that z-location) - the space is about 2cm radially

• can one put holes in the carbon tube for cables? - makes things difficult for cable routing
• can one flare out the tube to larger radius? - limits the direction of sliding in the tube during installation
• can one make carbon tube shorter and install EEEMCAL separately? - still some questions about if micro RWell can be cut shorter

• EEEMCAL side of the detector in the experimental hall is constrained - there is only about 1 meter

• Installation rails on the carbon tube

• for the rails of carbon tube installation - different options exist, either cutting the tube or machine aluminum to that

• How to make the carbon tube

• Andy Jung worked on a project that made such a tube before (CMS?)

• Action on carbon tube: Roland will try to find out

PREPARATIONS FOR BEAM TEST

• After readout meeting, go ahead with 3015 SiPMs for the beam test

• Action: count SiPM 3015 that is available

• CUA doesn't have any
• OU got 100 (20 are on a board)
• Rosi's order: 40 left

• Also have order 20 6015 SiPM; have ~5 of 3010 SiPM

• Some FADCs could come from Fernando's group

• Send personnel information to Douglas

• DESY wants the names at least a week before, but better to do it even earlier
• for letter of invitation also need names

PROJECT PDE

• Purpose is towards final design

• Documentation preparation ongoing

TDR WRITING

• Need to have a discussion for that

NEXT MEETING: FRIDAY 12 JULY AT 8AM