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Day
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Summary
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Link to report from morning meeting
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Mon 12th September |
- 04:00 Cryo S12 recovered.
- Precyle, prepare for injection.
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8:30
meeting |
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Sun 11th September |
- 00:00 Injection - steering the lines.
- 03:00 Beam dumped in the ramp due to losses at TCTV.4R8.
Vacuum spike.
- 04:30 Injection.
- 05:00 Beam dumped in the ramp due to losses at TCTV.4R8.
Vacuum spike.
- 06:00 Trip S12.
- 08:00 injection
- 10:40 Electrical network glitch on 400 kV line. Lost cryo
S12.
- Cryo recovery.
|
8:30
meeting |
|
Sat 10th September |
- 03:15 Dump of fill
#2092, QPS trigger RQF.12. 52 pb-1.
- Access for QPS,
restore electrical circuit breaker.
- Injection delayed by
some BLM data missing in XPOC.
- 10:45 Stable
beams fill #2093, 1380b, 2.95E33 cm-2s-1.
- 11:30
Dump of fill #2093, fault on RB.81,7 pb-1.
- Checking out RB.81.
- 17:00 Stable
beams fill #2094, 1380b, 2.98E33 cm-2s-1.
- 17:40 Dump of fill #2094,
QPS on RQX.R1, 5 pb-1. Lost cryo condition of IT R1 because QPS triggered
quench heaters.
- 19:50 Cryo IT R1 back.
- Access for RO in S12.
|
8:30
meeting |
|
Fri 9th September |
- 02:00 Steering TLs.
- Still rather high
vacuum in Pt2 with 1380 b.
- 05:40 Stable
beams fill #2090, 1380b, 2.7E33 cm-2s-1. New luminosity
record.
- 07:00 Dump of fill
#2090, S45 trip (QPS Q8.L5). 10 pb-1.
- 10:30 Refill.
- 12:00 Stable
beams fill #2091, 1380b, 2.65E33 cm-2s-1.
- 14:30 Dump of fill
#2091, cavity 1 B1 trip, 20 pb-1.
- 16:30 Access for RF in
Pt4.
- 19::30 Refill for
physics.
- 21:00 Stable
beams fill #2092, 1380b, 2.98E33 cm-2s-1. New luminosity
record.
|
8:30
meeting |
|
Thu 8th September |
- 06:00 Dump fill #2085,
15 pb-1.
- Refill for 912
bunches.
- 09:00 Stable
beams fill #2086, 912b, 1.97E33 cm-2s-1.
- 19:15 Dump fill #2086,
49 pb-1.
- 20:30 Filling 1380
bunches.
- High steady losses in
IR2, probably vacuum (but no access to PLC).
- 22:00 Beam lost in the
squeeze due to TCT position interlocks (1.5 m -> 1 m). beta* limit
interpolation issue in FESA.
- Access in Pt2 for
vacuum PLC.
|
8:30
meeting |
|
Wed 7th September |
- 00:40 Loss maps and
asynch dump tests with ALFA (7 mm) and TOTEM RPs (14 sigma V, 18 sigma H).
- 04:30 Data-taking for
ALFA - ATLAS.
- 05:30 Offmomentum loss
map dp/p +.(-500 Hz).
- 07:30 Asynch dump test
on flat top. This is the last validation test for beta* 1m and ALICE
polarity reversal.
- 09:00 Injection
checkout - issue with TCLI R2,
- 14:30 Stable
beams fill #2083, 264b, 5.7E32 cm-2s-1. First stable beams
with beta* 1m.
- 20:30 Dump fill #2083,
10 pb-1.
- Recover and access for
A:LICE. Preparing for fill with 480 bunches.
- 00:00 Stable
beams fill #2085, 480b, 9.4E32 cm-2s-1.
|
8:30
meeting |
|
Tue 6th September |
- 02:00 Loss maps at
flat top.
- 05:30 Loss maps at end
of squeeze separated.
- 07:30 Complete loss
maps at injection.
- 10:30 Long range BB
test with 84b.
- Issues with injection,
QFB etc delaying the test
- 20:00 Beams with 84b
in collision - no problems. Luminosity consistent with beta* of 1 m.
- 20:30 Dump, prepare
for loss maps with RPs.
|
8:30
meeting
|
|
Mon 5th September
|
- 00:25 Ramp to check
TCT IR2 alignment over ramp
- 00:45 Collimation
alignment TCT IR2 at 3.5 TeV
- 04:00 Loss maps in
collision
- 04:30 Beam dump after
off-momentum loss map
- 05:50 Ramp for
aperture measurements
- 06:20 Beam lost during
squeeze due to trip of RQT - no tune signal
- 08:50 Ramp for loss
maps with TCTs at 14 sigma and nominal bunch
- 10:30 Beam lost,
dumped by PIC. Network comm. cut by accident.
- 14:30 Loss map with 1
nom/beam, TCT at nominal settings + 2sigma.
- 17:00 Checking out
injection with 50 ns. 12b OK.
- 18:15 Lost cryo msl2
and itl2. Precycle.
- 21:15 Injection of
36b.
- 00:00 Loss maps at
injection.
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8:30
meeting
Technical
Stop Summary
Controls
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