Day
|
Summary
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Link to report from morning meeting
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Monday 28th Nov
|
- 05:00 Dump fill
2340, integrated L ~6.5 ub-1.
- 07:00 Flipping ALICE
polarity to POSITIVE.
- Preparing test ramp,
squeeze, collisions.
|
8:30 meeting
|
Sunday 27th Nov
|
- 00:00 Stable
beams fill 2328, 4.8E26 cm-2s-1.
- 06:10 Dump fill
2328, integrated L ~6 ub-1.
- Access for QPS.
- 12:30 Stable
beams fill 2329, 4.5E26 cm-2s-1.
- 18:15 Dump fill 2328,
integrated L ~5.5 ub-1
- 22:00 Stable
beams fill 2340, 4.5E26 cm-2s-1.
|
9:00 meeting
|
Saturday 26th Nov
|
- 03:30 Beam lost at
start of ramp due to RF settings mismatch.
- 06:30 Filling.
- 08:00 Stable
beams fill 2325, 4.2E26 cm-2s-1.
- Conditions have
stabilized for the cryo in Pt8. We can continue without warming up.
- 13:45 Lost fill
2325, trip of S45. Integrated L ~ 5 ub-1.
- Precyle, access for
RF.Recover line 6B1.
- 16:30 Filling.
Problems with SPS RF.
- 18:00 Filling for physics.
- 20:00 Stable
beams fill 2327, 4.5E26 cm-2s-1.
- 20:30 Beam lost,
LBDS B1 faulty. Integrated L ~0.8 ub-1.
- 22:30 Injecting again.
|
9:00
meeting
|
Friday 25th Nov
|
- 04:00 Dump fill
2320, integrated L ~5 ub-1.
- 06:40 Dump during
squeeze of IR2 due to unstable H tune measurement on B1 - trip of RQTFs.
- 10:00 Dump during
squeeze of IR2 due to unstable H tune measurement on B1 - trip of RQTFs.
Again.
- Access - source
exchange.
- Restart delayed due
to problem with LINAC3.
- 21:30 LINAC3 OK
again, beam back in LEIR.
- POPS down in PS.
- 23:00 Ready to
inject.
- Problem with RF
L6B1. Intervention needed
|
8:30 meeting
|
Thursday 24th Nov
|
- 03:30 Dump fill
2318, integrated L ~5 ub-1.
- 04:20 Ready to
inject, problems with SPS RF for 200 ns beam.
- 09:00 Stable
beams fill 2319, 4.2E26 cm-2s-1.
- 15:00 Moving to
ADJUST.
- Test of external crossing
angle flip from -80 to +80 urad - successful: no problems with losses
and lifetimes.
- 16:00 Test of
re-distribution of BFPP beam loss R5.B1 with a local H bump at Q11R5.B1.
The losses are reduced by ~factor 5.
- 17:40 Back to stable beams, problems with SPS RF.
- 18:05 Dump fill
2319, integrated L ~5.5 ub-1.
- 18:20 Lost cryo S23
due to temperature reading. Precycle.
- 20:00 Injecting.
- 22:45 Stable
beams fill 2320, 4.2E26 cm-2s-1.
|
8:30
meeting
|
Wednesday 23rd Nov
|
- 01:42 ready to
inject but no beam from PS
- 08:30 beam back in
PS
- 10:30 - 10:55 RF
LINAC3 problems
- 10:55 start filling
- 13:00 Stable
beams fill 2317, 4E26 cm-2s-1.
- 16:20 TETRA repeater
test - ON.
- 17:30 TRETA repeater
OFF.
- 18:00 Dump beam,
integrated L ~ 4.5 ub-1.
- 22:00 Stable
beams fill 2318, 4E26 cm-2s-1.
|
8:30 meeting
|
Tuesday 22nd Nov
|
- 02:30 Refill.
- 04:30 Stable
beams fill 2315, 3.5E26 cm-2s-1.
- 12:00 Dump fill
2315, integrated L ~5.5 ub-1.
- 15:00 Ready to fill
at injection, but no beam from PS.
- 17:30 Filling
- 19:35 Stable
beams fill 2316
- 22:25 Dump by RF
(most likely a quench)
|
8:30
meeting
|
Monday 21st
Nov
|
- 08:45 Cryogenics S34
back. Problems access doors.
- 10:30 Injecting pilot.
- Orbit FB gain tests
at injection.
- 12:00 Ramp - dumped
by RF interlock.M2B1.
- 14:00 Undulator trip
at injection, lost cryo conditions in ML4.
- Instead of precycle
of ML4, ramp and squeeze 2 probes. OFB tests at 3.5 TeV. Lost beam again
on RF interlock, M1B2.
- 18:30 Refill.
- 21:00 Beam lost in
squeeze due to OFB (gain increased x10).
- 23:30 Stable
beams fill 2314, 4E26 cm-2s-1.
- 23:50 Beam dump,
nQPS on RB.23.
|
8:30 meeting
|