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Satur day Morning 2 -Feb 2013 Bernhard Holzer, Joerg Wenninger

Satur day Morning 2 -Feb 2013 Bernhard Holzer, Joerg Wenninger. Fri day Morning . .. LHC in stable beams ... last fill before going to Pb-p mode 09 : 3 0h beam dump (OP) 10:20h Problem at MKI8, access needed to change “switch” ... replace a pump

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Satur day Morning 2 -Feb 2013 Bernhard Holzer, Joerg Wenninger

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  1. Saturday Morning2-Feb 2013 Bernhard Holzer, JoergWenninger • Friday Morning • ... LHC in stable beams ... last fill before • going to Pb-p mode • 09:30h beam dump (OP) • 10:20h Problem at MKI8, access needed to change “switch” • ... replace a pump • in parallel” prepare Pb-p settings • Injection schema for Pb/pwith 15 bunches created • Flipped the signs for the dp/p offset in the orbit references. • Beta-beat corrections flipped to Pb/pfor the squeeze and the collision BP • Setting up of the ADTs for Pb (B1) and p (B2) • Settings for the lifetime display for B1 Pb and B2 p • Setting the correct RF re-phasing for Pb/p • ... • 15:00h Injection Probe Beam

  2. LHC STATUS • Friday Late • 18:00h inject 15 bunches / beam, • ramp for collimator alignment & loss maps • ... don’t panic, its software • 16:30h flat top & re-phasing • ... some problems with ± Δrf • 18:00h squeeze / adjust • 18:20h check orbit: • Orbit difference with fill 3509 atsame • moment in the cycle (end of squeeze). • The orbit reproducibility is excellent. • vert. rms difference 45 um • largest change in TCTH.4R8.B2 0.2σ LHC 8:30 meeting

  3. LHC STATUS • Friday Late • 18:30h lumi in all IPs • 18:50h ... 20:30h start TCT alignment • 21:00h loss maps • 22:00halignment roman pots • 23:40h off momentum loss maps • 24:00h beam dump, cycling LHC 8:30 meeting

  4. LHC STATUS • Friday Night • 00:30h problem with lbds • ... communication fault on the the trigger card ? • 02:00h PSB quadrupole problem, no beam • 05:00h beam back, new injection • 06:00h flat top, • continue loss maps. LHC 8:30 meeting

  5. LHC STATUS LHC 8:30 meeting

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