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FASER LS2 work coordination meeting
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Europe/Zurich
112/2-023 (CERN)
Present:
Francisco Sanchez Galan, Liam Andrew Dougherty, Jonathan Gall, Marzia Bernardini, Richard Morton (replacing Marco Andreini), Cristina Adorisio, Brian Petersen, Jamie Boyd
Intro talk (Jamie):
- We discussed who would coordinate WP3, Marzia’s team can cover the coordination of the scheduling and the co-activities, however others are needed to coordinate the preparation in terms of specifications/requirements/drawings readiness and documentation etc… The suggestion is this would be covered by J. Boyd (for detector), and the specific groups for each service (power, compressed-air, optical fibres) maybe with help from EN/EA
- Marzia suggested we consider if the new optical fibres should be included in the existing cabling campaign (fibres for HL). In the discussion it became clear that we need to define better the requirements for the fibres, and what routing these would take in the machine (e.g. as ALFA fibres?)
- Marzia suggested that it would be best to put the tap in the compressed air as soon as possible (as this requires a stop of the compressed air in the sector), then the rest of the work could be done later. Jonathan mentioned that having compressed air in TI12 could be useful (but not essential) for the CE works if it is available in time.
- put Marzia and Jamie for WP3 (preparation has to be done by groups and detector)
- Marzia mentioned that Johannes Troller (EN-EL-FC) is the contact for optical fibres and not Gael
- Suggested to add Richard Morton, Christoph Tromer, Fabio Ferment and John Osborne to the e-group (now done)
- Two budget codes for host lab work (CE work, and other) - controlled by Fabio. Francisco mentioned that we will likely need to re-profile spending as more work done in 2019.
- EDMS node being setup under ‘experiments’ will put a link to the relevant documents in HSE
- A contact from the survey team is missing from coordination list as there is no available person power. Marzia mentioned that survey will be in the area around TI12 during installation period, she will followup if they could do some small work for FASER at this time. For CE works Jonathan will investigate what would be desirable (or necessary) from survey before CE works.
- Safety documentation - HSE will be flexible, but we should make sure documentation is produced as we go along. We should set schedule for producing safety documents, and for a safety review
- Schedule constraints from moving dipoles not relevant, as magnets cannot pass by point-7. The only relevant magnet for S81 already moved.
- CE work can start on January 27, but non-vibration work (SAS installation) can start earlier. In fact Jonathan will followup if CE works can go on while survey work is being done close by. If no vibration conflict with survey, can start ~13 January until 20th March - doing test for HL UPR work.
- Safety checks of CE design will take ~14days, we should start the safety review as soon as the detailed drawings become available
- Contrary to what is written on the slides FASER installation not effected by UPR constrain which for S81 is no transport from week 28, so this is not relevant for FASER installation (I had confused S12 and S81!). However there are still constraints from the end of May (ELQA tests and then the cool-down).
- FASER installation period to be put into the master schedule (possibly after discussing with HE)
- Jamie to contact Katy about removing obsolete FASER work items from PLAN
- Jamie to followup on regular time slot for this meeting (once every 2 weeks), unfortunately Thursday morning doesnt work. Jamie to send out doodle poll…
WP1 talk (Liam):
- No asbestos in CV ducts confirmed (good!)
- work between July and September with SAS installed - when most of the WP1 work will be done
- schedule to be included in Marzia’s plan
- Question: Can we include everything in WP1 ECR or do individual - single ECR seems OK
* make sure included integration database and part of ICL (relevant items not needed in configuration DB)
* GSM special case (as has safety implications).
- Richard recently checked TI12 (& TI18) tunnel and will present status at LMC soon. Since ECR on removing GSM from TI12 is approved, this should be OK, it will just introduce new restrictions on access to TI12. We should try to organize GSM cutting as close as possible to TI12 door, so GSM could be more easily re-established if needed in the future
- As a side note, Richard comments that the seal at LHC end is not completely tight - need to figure out if additional sealing is needed (could be relevant for ventilation in SAS)
- cable trays to be lowered May 16-17 (VIC done and work well planned)
- passarelle installation in early July. Design completed. HSE approval pending. Waiting to see if can be manufactured in time (critical path). We will have temporary stairs on tunnel side for some of work in July/Aug/Sept. In addition want to install the QRL protection in July, again timeline for manufacturing of this not finalised (critical path). Having passarelle and QRL protection installed will be needed/helpful for installing SAS, and removing ventilation ducts from UH12/TI12
- We might need to scan where 18 kV cable is to make sure not drilling into it, when installing passarelle / QRL protection
- EN-EA defined SAS (2 companies have looked at the site, and quotes will come soon)
- Richard: for safety reasons we should mark the edge at entrance of TI12 (at the least)
- Question: do we need any safety approvals for UJ12 work: we need to check if any thing blocks egress - should not be case
- all waste out of UJ12/TI12 will be treated under asbestos rules to avoid any dust during transport
* follow-up on details in one of next meetings
WP2 talk (Jonathan):
- RP result of cores by end of next week, then cores can be sent to ARUP for structural analysis
- need to decide if drain has to be diverted as a bit shallow
- need to refill cores removed - likely after SAS is installed (can be done at time of SAS in 2019, or probably in 2020 if difficult to do before)
- Check that transport limits on frames - could be slid under magnets
* FASER to confirm next week that steel (rather than stainless steel) is OK for the strengthening (very small effect on magnetic field in detector).
- Richard commented that need to check details of frames (welding, material etc..)
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