
I'm currently going on the 0830/1700 meeting presentations, linked to under "Progress" on the Portal.
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Tues 2 Mar:
03:00: Recovered from cryogenics
03:00 – [0830] : Problems in closing QPS quench loop of main quad in S78 –Tunnel intervention is required
10:00 ?? Recovered
10:00 –12:00 : Pre-cycle for sectors 67 -78 –81 and BIC, Dumped beam event problem investigation
12:00 –16:00 : re-establish beam in the LHC
16:00 -18:00 : RF work (bucket number for beam 2), cavity phasing
18:00 –evening: Systematic beam 2 and beam 1 measurements and corrections
Over night : Beta beat measurements and possible preliminary aperture measurements
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Fairly routine plan, but as of 1300 Page 1 is still showing problems with the QPS in 78, with beam estimated at 1700 (2 hours from posting). The logs are still showing the QPS being awkward in 78 at 1350
To add to this, it sounds like the Patrol system playing up - I believe a patrol has to be done before locking [sections of] the machine for beams to make sure no one's busy hammering still, and it seems the systems associated with it aren't counting people in and out properly.
All in all, another standard CERN day!