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FASER LS2 work coordination meeting
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Europe/Zurich
CERN
CERN
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Description
This meeting is to start to discuss possible plans following the partial CERN re-start
Attendance: Marzia Bernardini (EN-ACE), Jamie Boyd (EP), Olivier Crespo-Lopez (EN-CV), Liam Dougherty (EN-ACE), Maddalena Maietta (RP), Richard Morton (HSE), Maria Perez Ornedo (EN-HE), Jerome Panigoni (EN-HE), Alberto Rigamonti (EP-DI-SO)
Introduction (Jamie)
- FASER installation schedule (previously planned in a 6w + 2.5w window starting on Oct 12th) has been delayed due to a delay in the cool-down of S81 due to a non-conformity in the QRL
- Marzia presented 2 options for how things will evolve:
OPTION 1: cool down delayed by 3 weeks: w40-w44.
FASER installation window would be w45 (beg-Nov.) until end of year - except for 2 weeks of ELQA tests. FASER may then need ~4 wks in early 2021 to complete the installation.
OPTION 2: cool down delayed to mid-Nov - end-of-year.
Then FASER installation window would be from when we are ready (mid/late-Oct) until mid-Nov + w1-5 in 2021.
- Likely that the final option will be decided by mid-Sept (depends on outcome of ongoing tests of QRL in S81).
- The first 2 FASER magnets have been assembled, measured and installed on the test setup in EHN1.
- The 3rd magnet is delayed and expected to be ready by mid-Nov. (it is possible to install this late if needed, however with the updated schedule it may not be needed).
- The FASER network setup was discussed with IT/EN-EL. The fibers will be installed in TI12 in early Sept. Additional fibers are needed from the star point in SR1 to the FASER rack there (to be installed in Oct). IT will start to setup the FASER network, and to purchase the FASER switches. It is important that the network is setup and tested before the detector installation, as it is needed to monitor and test the experiment during the installation.
- The FASER cabling in the tunnel will be done by EN-EA (from the rack to the start of the detector). We have had discussions with Maria/Gianluca to finalise the details. The cable tray routing has been defined.
- The FASER cooling unit from EN-CV is under commissioning in EHN1 (should be finished soon). Piotr has left CERN and Olivier is the EN-CV contact for FASER. We have recently clarified the responsibility of FASER and EN-CV. EN-CV will take care of the piping and manifolding up to the detector, whereas FASER will connect the flexible hoses after the manifold to the tracker stations.
- A first draft installation schedule was presented, which showed 6wk is very tight for the full installation, and this should be optimised. It is important that we have power, cooling and network during the detector installation to allow testing the components when they are installed. It maybe necessary to have temporary power for the racks at the start of the installation to test things in the racks before the main electrical installation is signed off. Jamie will organise a meeting with HSE, EP safety office and others to discuss the safety implications of the installation, and the sign off to operate the detector.
- There has been a lot of progress in the detector production/commissioning, including a cosmic test of a tracking station which tests the full readout chain and where nice cosmic events have been observed. The plan is to have the 3 tracking stations ready in late-Sept to start a full system test in EHN1 (assembly, cabling and operations) before installation in the tunnel.
Workpackage 3 Status (Liam)
- The EN-EL electrical installation was completed in the July
- A cut patrol box cable was fixed - this will be tested tomorrow (28/8)
- The handrail design and drawings are complete, for HSE verification
- On Sept 1st there will be the VIC for the dismantling work in UJ12, the VIC for the cable tray installation, and the VIC for the optics fibre installation
- The cable tray installation is planned for 3/4 Sept.
- The fibre installation is planned for 2 Sept.
- The compressed air installation is planned for w37
- UJ12 handrail installation planned for w38-40
- The installation and load test of the new handling beam was planned for w42, but given the change in schedule this could maybe done in w39 before the cool down (TBC)
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