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Day
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Summary
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Link to report from morning meeting
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Sunday 31st October
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- 00h47: Start ramp.
109b. 50ns. ~1.1e11 p / bunch.
- 02h24: Stable beams. Fill 1459.
First collisions with 50ns bunch spacing.
- 07h30: Adjust. End-of-fill
studies.
- 10h10: Beam dump by
operation. Ramp down and recycle.
- 11h12: Injection.
- 12h12: 108b (1 batch
12b + 4 batches 24b, 50ns) dumped with interlock from vacuum. Warm-cold
transition on Q6.L7. Valves closed. See info in linked file.
- 12h15: Go for
scrubbing with 84b (1 batch 12b + 3 batches 24b, 50ns).
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Slides
from 9:00 meeting
Vacuum
interlock at 12h12
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Saturday 30th October
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- Overnight Friday to
Saturday: successful completion of TOTEM run following by Alice length
scale calibration; longitudinal scan; abort gap filling and cleaning
studies at 3.5 TeV.
- During day somewhat
perturbed second pass damper, RF and injection studies
- 08h07: Abort gap
filling study.
- 09h48: Beam dump by
operation.
- 13h45: SPS
longitudinal blow-up set up.
- 13h52: QPS A12
communication problem
- 14h08: QPS OK.
- 14h24: ATLAS access.
- 16h20: Injection
pilots.
- 16h45: Injection setup
50ns. IP6 interlock test. RF setup 50ns.
- 21h26: ATLAS access.
- 22h44: ATLAS access.
- 23h49: Injection.
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Slides
from 9:00 meeting
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Friday 29th October
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- 00h36: Start ramp.
368b.
- 01h27: Beam dump at
3.5 TeV. BLM trigger in Q4.L2 (UFO?). Losses
start in injection kicker.
- 02h35: Injection.
- 03h15: Start ramp.
368b.
- 04h16: Stable beams. Fill #1453.
Turn-around: 2h40.
- 08h30: Length scale
calibration in ALICE.
- 11h00: Beam dump by
operations.
- 50
ns commissioning: transverse damper, injection
- 21:00
Start TOTEM run
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Slides
from 8:30 meeting
Ufino as seen
by Alice
c/o Jan Fiete Gross-Oetring
Altas halo bct vacuum
c/o Witold Kozanecki
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Thursday 28th October
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- 00h37: Stable beams. Fill #1450.
- 15h17: Beam dump by
operations. Integrated: 6.4/6.2/5.2 pb-1 (ATLAS/CMA/LHCb).
Length of fill: 14h40.
- 15h25: Ramp down.
Cycle. Change of monitor factor for 4 BLM’s (0.3 -> 0.5).
- 16h45: Injection.
- 19h46: Start ramp.
368b.
- 20h12: Beam dump just at
flat top. ALICE removed beam permit. ALICE BCM triggered.
- 22h51: Injection.
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Slides
from 8:30 meeting
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Wednesday 27th October
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- 01h04: Both beams
filled with 424b. Had to dump at 450 GeV to
reset QPS_OK on RB_A23/RQF/RQD_A23. Ramp down and pre-cycle.
- 02h46: Injection.
- 04h06: Start ramp.
424b.
- 04h23: Beam dump just after arriving to 3.5 TeV. TCTH.4R8.B2 BLM in IR8 triggered on 0.6s
running sum. A few 10’s seconds before saw strange loss patterns.
Beam-gas scattering?
- 05h26: Injection.
- 07h21: Start ramp.
364b.
- 07h27: Beam dump due
to SIS error on beam energy (timing telegram or something else?). Beam
dump fine.
- 07h40: CMS start
ramp-down.
- 09h00: Start of MD on
abort gap cleaning in shadow of CMS work.
- 16h00: Injection. CMS
back.
- 18h03: Injection
kicker flashover IR2.
- 18h10: Water leak CMS
– emergency access.
- 19h35: Injection.
- 22h46: Start ramp.
364b.
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Slides
from 8:30 meeting
Slides from LMC
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Tuesday 26th October
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- 00h54: Start ramp,
368b.
- 01h18: Beam dump due
to UFO after 5 min at 3.5 TeV.
- 01h26: Ramp down,
recover.
- 02h35: Injection.
- 04h36: Start ramp, 368b.
- 05h34: Stable beams. Fill #1443.
- 07h50: Beam dump due
to UFO Q8.L5.
- 07h55: Ramp down and
recover.
- 08h42: Injection. SPS
transmitter problem (9h39-10h08).
- 12h26: Start ramp,
368b.
- 13h35: Stable beams. Fill #1444.
- 16h56: Vacuum solenoid
off/on.
- 20h48: Beams dumped by
EIC.
- 21h14: Increase of
various BLM thresholds through monitor factor.
- 23h18: Interlock beam
dump test with 324b. OK.
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Slides
from 8:30 meeting
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Monday 25th October
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- 02h35: Stable beams, 368b, fill #1440.
- 13h55: Adjust mode.
End of fill study on beam tails.
- 14h12: Beam dump, ramp
down and recover.
- 15h41: Injection.
- 18h42: Start ramp,
368b.
- 19h03: Problem during
setting of crossing angle. Beam dumped by EIC following procedure.
- 19h03-20h07: Cryo communication problem S34.
- 21h32: Injection.
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Slides from 8:30
meeting
Serge
Claude presentation
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