LHC Commissioning 2018
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John updated 26/11/2018
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Commissioning plan for 2018 PbPb run, following TS3
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Preconditions
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Optics measured and mostly corrected to collisions
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Base cycle defined and sequence ~ ready
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Single bunch injection not yet established
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DateShiftTimeStatusActivityTeamNotes
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02/11/2018FridayDraft for discussion, everything tentative!
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M4DoneTS3, Linac3 Pb source repair, BLM thresholds modified
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M4DoneTS3, Linac3 Pb source repair, BLM thresholds modifiedIon source recovery continues through weekend
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A4DoneRecovery, precycleOP
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A4DoneEPC Interventions for PC faults @P3 and @P8
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N4DoneCycle with one p probe (Q20) for final optics checks, IP2 crossing angle reversalOP, OMCCheck optics with both crossing angle sign in IR2, nominally in collision
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N4DoneCycle with one p probe (Q20) for final optics checks, IP2 crossing angle reversalOP, OMC
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03/11/2018Saturday
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M4DoneCycle with one p probe (Q20) for final optics checks, IP2 crossing angle reversalOP, OMC
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M6DoneLift intervention P8, acces for WSEN, Schindler
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A2DoneSteering of TI2 and TI8 with Q26, including TCDI setupABT, OP
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A6DoneSteering of TI2 and TI8 with Q26, including TCDI setupABT, OP
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N2DoneCycle with 30 probe bunches (Q20) to find collsions in all IRsOP
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N5DoneCycle with 30 probe bunches (Q20) for 'final' cleaning OP
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04/11/2018Sunday
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M3DoneCycle with few probes for commissioning, collisions, collimator & crystal reference, IR2 aperture check, loss maps, possible IR5 apertureOP, COLLAperture check with positive crossing angle in IR2, check loss maps in physics conditions
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M4DoneCycle with few probes for commissioning, collisions, collimator & crystal reference, IR2 aperture check, loss maps, possible IR5 apertureOP, COLLTake time to do negative crossing angle as well
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A4DoneCycle with few probes for commissioning, collisions, collimator & crystal reference, IR2 aperture check, loss maps, possible IR5 apertureOP
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A4DoneMKBV Fault, SPS no beam (RF)
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N4High beta VdMOP,EXP
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N4
Not complete
High beta VdMOP,EXP
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05/11/2018MondayOP
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M4DoneSetup of Pb injection and capture (phases, delays)ABT, RF,OPExperts needed.
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M6DoneSetup of Pb injection and capture (phases, delays)ABT, RF,OP
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A4DoneTL check, Abort Gap Keeper validation for ionsABT, RF,OP
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A4Cycle with few ion bunches to collisions (positive pol)OPFirst cycle lost due to fRF in the ramp, second & third cycle lost due to instability just before collisions
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N4Cycle with few ion bunches to collisions (positive pol)OPSee detailed table on PbPb loss map sheet
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N4DoneCycle with few ion bunches to collisions (positive pol)OP
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06/11/2018Tuesday
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M4OPLost on
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M4No beam from CPS (ions)OP
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A4OP, RF
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A4DoneCycle to collisions with positive polarity - collimation hierarchy checkOP, RF
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N4DoneCycle to collisions with positive polarity - collimation hierarchy checkOP
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N4Loss maps with positive crossing angle in IP2OP
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07/11/2018WednesdayOP
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M4DoneCycle with negative polarity, IR2 aperture checkOP,COLL
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M4DoneCycle with negative polarity, IR2 aperture checkOP,COLL
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A4Cycle for TCP check and crystal setupOP,COLLOne cycle lost
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A4DoneCycle for TCP check and crystal setupOP,COLL
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N2DoneCycle for TCP check and crystal setupOP,COLL
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N6DoneLoss maps with positive crossing angle in IP2 (collisions)OPIf possible move on faster with ramp-up fills
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08/11/2018ThursdayOP
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M5No beam from PS
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M3DoneIR6 interlock BPMS, loss maps with positive crossing angle in IP2OPDelay from PS intervention
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A4DoneLoss maps with positive crossing angle in IP2 OPLMs completed
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A4DonePbPb Stable Beams,100 ns train injection ~50 bunches, 2h SBOP
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N4Done
PbPb Stable Beams,100 ns train injection ~50 bunches, 2h SB, BFPP bump studies
OPCheck list before start of full physics production
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N4DonePbPb Stable Beams,100 ns train injection ~50 bunches, 2h SBOP
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09/11/2018Friday
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M4DoneStudy of losses on TCTs in squeeze OP,COLL
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M4DoneStudy of losses on TCTs in squeeze BLM thresholds update
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A4DoneLoss map repetition for TCT changes squeeze & collisionsOP,ABTOne cycle lost on TCT interlock
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A4DoneLoss map repetition for TCT changes squeeze & collisions
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N4DonePbPb Stable Beams,100 ns train injection 260 bunches, first fillLevelling ALICE at 10^27cm^-2s^-1
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N4DonePbPb Stable Beams,100 ns train injection 260 bunches, first fill
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10/11/2018Saturday
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M4LINAC3 RF amplifier
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M3LINAC3 RF amplifier
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A5PbPb Stable Beams,100 ns train injection 260 bunches, second fill
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A4PbPb Stable Beams,100 ns train injection 260 bunches, second fill
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N4PbPb Stable Beams,100 ns train injection ~450 bunches, two fills with total 6h SB
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N4PbPb Stable Beams,100 ns train injection ~450 bunches, two fills with total 6h SB
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11/11/2018Sunday
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M4PbPb Stable Beams,100 ns train injection ~630 bunches, SB, long fillsLevelling ATLAS/CMS at 3. 10^27cm^-2s^-1
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M4PbPb Stable Beams,100 ns train injection ~630 bunches, SB, long fills
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A4PbPb production
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A4PbPb production
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N4PbPb production
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N4PbPb production
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12/11/2018Monday
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M4PbPb production
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M4PbPb production
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A4VDM
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A4VDM
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N4VDM
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N4PbPb production
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13/11/2018Tuesday
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M4PbPb production
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M4PbPb production
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A4PbPb production
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A4PbPb production
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N4PbPb production
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N4PbPb production
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14/11/2018Wednesday
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M4PbPb production
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M4PbPb production
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A4PbPb production
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A4PbPb production
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N4PbPb production
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N4PbPb production
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15/11/2018Thursday
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