Difference between revisions of "Summary EEEMCAL Design/Engineering 6/2/2023"
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(Created page with "PARTICIPANTS: Josh, Richard, Tanja, Carlos, Jim, Julien REVIEW EPIC ENGINEERING WORKSHOP * General overview of the workshop: main theme was the installation of the detector...") |
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::* cooling: primary water feed, if need cooler then need to add another mechanism like a chiller | ::* cooling: primary water feed, if need cooler then need to add another mechanism like a chiller | ||
::* mechanically possible to place cooling in the plates - at the moment the design does not include that | ::* mechanically possible to place cooling in the plates - at the moment the design does not include that | ||
− | ::* diameter of cooling feeds: numbers from spreadsheet are still the estimate | + | ::* diameter of cooling feeds: numbers from [https://brookhavenlab.sharepoint.com/:x:/s/EICPublicSharingDocs/EZZFXyRMEANNrQAqbJ_lULsBLh8b1BTpVWPjRVvZ2ABFmA?rtime=usIyR31j20g spreadsheet] are still the estimate |
::* expect results on cooling at the end of the year | ::* expect results on cooling at the end of the year | ||
::* Dry nitrogen available from backend at EEEMCAL | ::* Dry nitrogen available from backend at EEEMCAL |
Latest revision as of 11:27, 2 June 2023
PARTICIPANTS: Josh, Richard, Tanja, Carlos, Jim, Julien
REVIEW EPIC ENGINEERING WORKSHOP
- General overview of the workshop: main theme was the installation of the detectors
- how detectors are currently installed and how the EIC detector may be installed
- specific detector discussions (tracker, RICH, DIRC frame, imaging barrel ECAL)
- discussions of all subsystems and installation
- DIRC FRAME INTERFACE with EEEMCAL: Avishay Mizra currently working on new/updated design
- EEEMCAL weight given is ~3 tons + safety factor of about factor of two
- attachment points for EEEMCAL will be defined by the updated DIRC frame
- the rails are a new feature on the DIRC frame - this because the pfRICH has to be sliding in with rails in front of and before the EEEMCAL is installed; there cannot be any protrusions into the DIRC frame - cannot use periferal mountings --> limits hardware that can be used for EEEMCAL
- assumed to be done with Thomson rails at 12, 6, 4, and 8 o'clock positions
- with four rails overconstrained; holding tolerances for linear rails is basically impossible --> with what precision should the detector have to be aligned (do we need to align or just need to know where it is when it is in place)
- pre-estimate load/stress deformation of the DIRC frame
- structure is assumed to be stainless, welding - magnetic -- alternative: use bolting
- Important for moving forward with the EEEMCAL design (Julien) ==> need to know design of DIRC and clearance between DIRC and EEEMCAL
- BEAMLINE will be in place
- is there a need to split open the EEEMCAL - clam-shell design?
- from physics point of view would likely lose some acceptance so not desirable - and in principle have enough longitudinal space in the assembly hall
- usually beamline not supported inside the detector
- beampipe bakeout, alignment
- SERVICES - COOLING
- cooling requirements: what is needed, size of cooling feeds
- how much cooling is needed? - currently tests are being performed at IJCLab-Orsay
- main idea is to have insulation and active cooling
- four lines: two internal, two external, but it may be necessary to have cooling on each board (additional manifolds)
- cooling: primary water feed, if need cooler then need to add another mechanism like a chiller
- mechanically possible to place cooling in the plates - at the moment the design does not include that
- diameter of cooling feeds: numbers from spreadsheet are still the estimate
- expect results on cooling at the end of the year
- Dry nitrogen available from backend at EEEMCAL
- Action item: Josh send zoom link to Jim and Julien for Monday meetings
- Mechanism for interaction with BNL engineers for EEEMCAL: Josh/Jim/Julien
NEXT MEETING: 16 JUNE AT 8:00AM ET (ENGINEERING)