Nine o'clock meetings on the weekend at nine o'clock.
|
Day
|
Summary
|
Link to report from morning meeting
|
|
Monday 7th March
|
- 00h09: Start of
transverse damper studies.
- 04h00: Loss maps.
- 06h00: Ramp without tune
feedback but with radial mod.
- 08h00: Start injection
and dump setup at 450 GeV.
|
8:30
meeting
14:00
LPC report
|
|
Sunday 6th March
|
- 00h30: Loss maps.
- 05h30: Loss maps done.
Prepare beam for collimation setup at 3.5 TeV.
- 09h02: Ramp started. 1
nominal bunch per beam.
- 10h40: Start
collimation setup at 3.5 TeV.
- 16h04: Dump b1. LBDS
self trigger.
- 17h56: Beam 2 dumped:
losses from collimation setup.
- 18h51: Access for beam
dump.
- 21h07: Injection.
- 21h53: Machine
protection and other tests.
|
9:00
meeting
|
|
Saturday 5th March
|
- 00h46: Start ramp to
3.5 TeV. Squeeze to 3.5 m.
- 03h06: Lost beams.
- 04h01: Injection.
- 04h41: Dump problem
solved.
- 05h09: Controller
problem DQAMG_4.RQTL11.R2B1.
- 06h36: QPS problem
solved. Injection. Ramp. Squeeze. Beta beat and coupling correction
ongoing.
- 09h00 meeting: OK to
go ahead with nominal bunch intensity from beam dump.
- 10h20: Beam dump with
RF interlock from frequency trim.
- 11h20: Injection nom.
bunch. Ramp.
- 12h53: At 3.5 TeV with 1 nominal bunch per beam.
- 14h53: Dump. Ramp-down
and recover.
- 15h09: RF module 2B2
down. RF piquet.
- 16h40: Ready for
injection.
- 17h01: Start injection
protection setup.
|
9:00
meeting
|
|
Friday 4th March
|
- 08h32: Access for beam
dump system.
- 09h10: Access
finished. Beam dump tests without and with beam.
- 16h00: Start of
2-shift “quiet” beam period for observing beam dump
stability (pilot bunch only, ramp OK).
- 16h39: Observe effect
of Q feedback on chroma.
- 16h48: Start ramp to
3.5 TeV. Squeeze steps for beta beat
correction.
- 22h02: Lost both
beams. Cryo gone for MSL4. And the undulator. RU.L4 QPS_OK lost.
|
8:30
meeting
|
|
Thursday 3rd March
|
|
8:30
meeting
|
|
Wednesday 2nd March
|
- 04h36: Cryo problem in arc 81. Access.
- 09h14: Injection.
TI8 injection collimator setup.
Testing new sequence.
New version of vacuum application (S. Blanchard).
Updates and modifications of orbit and tune feedbacks.
- 14h34: Access in PT 2
and 8 for power converters. ATLAS access in shadow.
- 15h58: RB.A81 lost QPS
OK when preparing for precycle. Access
required. QPS problem due to loss of communication from beam losses at
injection. New software.
- RQTL111.L3B2 and RCBXH3.R1 tripped, idle at standby. Reset.
- Access for damper problem in the SPS (3h).
- LHC-b and CMS accesses in shadow.
- LBDS access in shadow.
- 18h37: Pre-cycle. Lost
power permit for S67, S78 and S81. Likely from switching off access
during pre-cycle (known problem?).
- 19h34: RSD2.A78B1
tripped during pre cycle.
- 20h24: One Roman Pot
not completed out à
interlock. Moved out by TOTEM.
- 20h43: Injection. 2
pilot bunches per beam.
- 21h34: Incorporation
problems before ramp. Reference mis-match.
- 22h10: Start of ramp.
- 22h34: Squeeze.
Beam time: ~10h
Access and recovery: 10h37 (until 20h00)
|
8:30
meeting
|
|
Tuesday 1st March
|
- 00h01: MPS tests
(RD1.LR1 off). Recover and rampdown.
- 00h51: Injection.
Reboot of OFC and OFSU fixed problem.
- 02h36: Ramp
- 03h06: Squeeze. Beta beat
correction (B1 complete, B2 to be completed). Beam 2 affected by
RQS.A78B2 trips. Coupling not corrected (2 beams required).
- 08h12: Beam dump and
recover.
- 10h30: Collimation
setup.
- 12h48: Injection
protection setup.
- 13h42: Lost D2L5.
Access.
- 17h43: Injection mode.
- 19h12: Cryo problem PM25. Access.
- 22h20: Injection. TL
optics measurement and correction.
Beam time: ~13h
Access and recovery: 7h09
|
8:30
meeting
|
|
Monday 28th February
|
- 8h00: Injection
- 8h41: Injection and
dump protection setup
- 14h21: XPOC problem
- 15h28: RF calibration
- 17h42: Access for RF
- 20h16: Pre-cycle
- 21h30: Injection
- 22h34: Ramp
- 22h52: Squeeze for
orbit checks
|
8:30 meeting
|