Nine o'clock meetings on the weekend at nine o'clock.
|
Day
|
Summary
|
Link to report from morning meeting
|
|
Monday 21th March |
- 06:00 End of fill #1640: 3.7 pb-1
- RB S12 and S23 tripped during ramp up, active filter
|
8:30
meeting |
|
Sunday 20th March |
- 05:50 Cryo loss in matching section in Sector 81 - end
of fill #1638: ~1.3 pb-1.
- 09:20: Cryo OK
- 11:40 Stable beams #1639 64 bunches. Initial luminosity
6.5x1031 cm-2s-1
- 18:00 End of fill #1639: 1.2 pb-1
- 21:30 Stable beams #1640 136 bunches. Initial luminosity
1.5x1032 cm-2s-1
|
9:00 meeting |
|
Saturday 19th March |
- 04:35 Stable beams #1636 32 bunches
- 10:30: End of fill #1636: ~0.6 pb-1
- 13:20 Stable beams #1637 64 bunches. Initial luminosity
6.6x1031 cm-2s-1
- 20:00 End of fill #1637: 1.3 pb-1
- 22:45 Stable beams #1638 64 bunches. Initial luminosity
6.5x1031 cm-2s-1
|
9:00
meeting |
|
Friday 18th March |
- 9:00 Replace central timing server with new firmware
- 9:30 Back to original firmware on central timing server
- 9:30 Test dumps at injection and test ramp to verify
system
- 11:30 Access to experimental caverns on ramp down on
request of ALICE
- 15:05 Stable beams #1634. 32 on 32. Initial luminosity
~3x1031 cm-2s-1
- 21:00 End of fill #1634 (~0.5 pb-1 in 6
hours)
- 23:30 Stable beams #1635 32 on 32. Initial luminosity
~3.3x1031 cm-2s-1
- 23:35 Beam dump due to FGC reset of RF
|
8:30
meeting
UTC
timing |
|
Thursday 17th March |
- Test ramp for collimation energy interlocks
- Morning: evaluation of the origin of the timing problem
occurred over night and the implication on machine
protection
- 09:00 – 12:00 Dry ramp to validate energy and b* limit
functions for collimators
- Beam 1 not available from the SPS (steering issue in
TT60-TI2)
- Beginning of the afternoon: decision to operate
the machine with low intensity and progress with
commissioning activities while waiting for deployment of new
firmware for the timing distribution
- 14:00-19:00: no beam (BST, NFS, PS-Booster)
- 19:00 - 03:00 Setting up of the ramp/collision to 1.38
TeV
- 04:30 FIDEL tests at 450 GeV
|
8:30
meeting |
|
Wednesday 16th March |
- 23:30 - 02:00 Ramp-Squeeze with damper ON and 3 on 3
bunches
- 02:00 - 08:30 Stable beams 3 on 3
- 08:30 - 12:30 Ramp - squeeze - collisions with 8 bunches
on 8 bunches
- RF-rephasing and other problems
- 20:30 Ramp 32 x 32 bunches, lost in ramp, timing
distribution problem
- Requalification of system
- Collimation problem
|
8:30
meeting |
|
Tuesday 15th March
|
- 08:00 – 12:00: Machine protection checks without beam:
BLMs/XPOC/IPOC
- 12:00-16:30 Test ramp with 8 bunches (and 4 pilots)
failed due to trip of trim quadrupole
- 16:30-21:30 - MPS checks: –BLM tests with beam –D1 trip
and protection by BLM –Dump BTV interlock tests –LSS
interlocked BPMs
- 21:30-23:30 Test ramp with 8 bunches failed again with trip of trim
quadrupole even with lower gain of the transverse feedback
|
8:30
meeting
|
|
Monday 14th March
|
- 01h00: end of stable
beams. Dump B2. H loss map and asynch . dump test.
- 03h00: beam dump after
ramp - one bunch in wrong bucket.
- 05h10: stable
beams fill 1615. 1 probe + 3 nominals, 2-2.5 um emittance, L ~
1.5E30 cm-2s-1 ATLAS/CMS.
- Loss maps
- FMCM tests
- Injection tests
- Stable Beams 1 probe +
3 nominal bunches per beam
|
8:30
meeting
|