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Tuesday Morning 29-Jan 2013 Bernhard Holzer, Joerg Wenninger

Tuesday Morning 29-Jan 2013 Bernhard Holzer, Joerg Wenninger. Monday Morning ... after ALICE polarity flip 7:20h Injection for validation cycle 8:00h ramp / squeeze / adjust 8:50h collisions optimised loss map for pos. off-momentum

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Tuesday Morning 29-Jan 2013 Bernhard Holzer, Joerg Wenninger

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  1. Tuesday Morning 29-Jan 2013 Bernhard Holzer, JoergWenninger • Monday Morning • ... after ALICE polarity flip • 7:20h Injection for validation cycle • 8:00h ramp / squeeze / adjust • 8:50h collisions optimised • loss map for pos. off-momentum • 10:00hset up for VdM scans • Orbit excursion interlock (BPMs in IR6)

  2. Tuesday Morning 29-Jan 2013 11:40h injection ... but ... 12:30h beam dump: Orbit excursion interlock (BPMs in IR6) Pilot Pb bunch sat too long at injection and intensity dropped below threshold of BPM at Pt 6. 12:40h injection finished, prepare ramp 13:20h ramp ... and beam dump at 1.8 TeV spurious BLM trigger Beam dump from BLM at pt 4 but no sign of losses LHC 8:30 meeting

  3. Tuesday Morning 29-Jan 2013 • Monday Late • 15:50h new injection ... to be optimised (SPS inj kicker delay) • 17:30h injection for physics • 19:30hramp etc • ... not really easy going • lifetime beam2 ≈ 1h • 20:30hoptimising IPs & stable beams • 21:00h start VdM scan in IP1 • - separation plane – LHC 8:30 meeting

  4. Tuesday Morning 29-Jan 2013 • Monday Late / Night • 21:30h IP1 VdMcrossing plane • btw ... smooth operation • lifetime • 23:00h start CMS VdMscan • 2:00h Preparing for Distance-Scale Calibration scans • (VdM scans with vertex offset) • 3:20h beam dump: • Orbit excursion interlock (BPMs in IR6) • some Pb bunches reached the low intensity threshold τ LHC 8:30 meeting

  5. Tuesday Morning 29-Jan 2013 • Monday Night • 3:20h beam dump: • Orbit excursion interlock (BPMs in IR6) • some Pb bunches reached the low intensity threshold • 4:26h machine cycled, new injection ... again SPS optimised IPb at ramp IPb at ramp 1*1010 4*109 LHC 8:30 meeting

  6. Tuesday Morning 29-Jan 2013 • Monday Night / Tuesday Morning • 6:00h injection ... for the remaining VdM scans • fyi ... SPS injection optimisation • Plan: finish the VdM scans • flip LHCb • back to physics LHC 8:30 meeting

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