|
Date |
Summary |
Link to report from morning meeting |
| Monday 22 October |
- 01:50h stable beams fill 3207 L0=7.7 e33
- 06:10h Beam Dump - power converter communication problem in 78.
- End fill 3207: 88 pb-1 in 4h27m
|
08:30 meeting |
| Sunday 21 October |
- 08:03 OP dump of 3203 172 pb-1 in 11h44m
- 08:55 Re-injecting for physics
- 11:25h stable beams, fill 3204 L0=6.6e33
- 19:45h beam dump by OP. Fill 3204: 110 pb-1 in 8h18m
- Injection delayed waiting for injection kicker to cool
- 23:19h Ramp
- 23:27h Beam Dump: UFO
|
09:00 meeting |
| Saturday 20 October |
- 00:00 ramp, without problems, clean & clear
- 01:00 stable beams - fill 3201 - initial lumi 7.2e33 cm-2s-1
- 11:20 lost fill 3201 to spurious opening extraction switch of RCS.A12B1 (as Friday) 123 pb-1 in 10h18m
- Access for MPE piquet – switch replacement Y.Bastian (QPS) joins Vincent Froidbise for the intervention on RCS.A12.B1
- 13:30 Access to PM25 finished. Closing LHC...
- 14:00 Ready for injection SPS working on beam quality leading into…
- Main Power Supply problem in the Booster
- 17:00 Injection Some steering required
- 19:30 Start ramp
- 20:20 Stable beams Fill 3202 Initial luminosity: 7.02e33 cm-2s-1
|
09:00 meeting |
| Friday 19 October |
- 04:25 RCS.A12B1, switches are closed. Access over.
- 04:30 PSB has a problem with the 16 MHz cavities, PS and SPS have no beam.
- 05:30 Cryo Start lost / flickering on 78 - could be a WorldFIP problem.
- 07:15 access for change of WorldFIP repeater
- 08:50 injection
- 10:20 ramp, some problems with losses, tune spectrum, lifetime on ramp, squeeze & adjust
- 11:10 stable beams, Ldt=105 pb^-1
- 19:30 beam dump for access ATLAS (... and ALICE)
- 23:00 injection
|
08:30 meeting |
| Thursday 18 October |
- 08:15 OP dump of fill 3194 164 pb-1 in 12h36m
- RQ8.L1B1 and 2 tripped during ramp-down. Access required
- Morning: accesses various
- 12:15 cycling, delayed injection - SPS issues
- 15:00 RF tuner adjustment
- 16:20 RF beams dumped - injecting for physics Some delay: beam quality checks needed SPS transmitter fault – partial fill dumped at 19:20
- 20:30 start ramp Ratty squeeze – both beams Beams lost towards end of adjust
- 23:10 back at flat top Beams lost to QPS trigger - RCS.A12B1 switch problem. Access required
|
08:30 meeting |
| Wednesday 17 October |
- 00:42 Beams lost RF trip of cavity L2B2 (external veto) - possible klystron arc. Fill 3191: 16 pb-1 in 47 minutes
- 03:20 Stable beams Fill 3192: initial luminosity 6.66e33 cm-2s-1
- 15:00 end-of-fill study: reduced damper gain for first 6 bunches
- 15:30 beam dump (op), L=154 pb^-1
- 16:30 TI2/8 steering
- 18:30 injection for physics
- 19:30 stable beams
|
08:30 meeting |
| Tuesday 16 October |
- 01:10 injection, transferline steering
- 04:00 stable beams
- 10:00 Start Roman Pot insertion
- 11:00 Beam dumped BLM on RP triggering with RP at 31 sigmas
- 12:00 ALICE BCM without beam - power supply of BCM system C has been exchanged in the shadow ramp down
- No beam from PS followed by beam quality issues (PS extraction power supplies not pulsing)
- 15:00 Injecting for ADT high-bandwidth tests
- 16:30 beam dumped - Spurious EE opening of RB.A67 Energy Extraction team access IP6 (UA67) to replace cards on the RB.A67 EE system
- 20:15 EE team out
- 20:30 Start pre-cycle
- 22:00 Beam in Some delay at start ramp: BBQ FESA server down
- 23:50 Stable beams fill 3191 Initial luminosity: 6.5e33 cm-2s-1
|
08:30 meeting |
| Monday 15 October |
- 03:15 Beam dump. QPS on Q6.L7B1.
- RB S67 EE trigger, pre-cycle.
- 05:00 PS POPS down.
- 06:00 Filling
- 08:00 Beam dumped at start of squeeze. Orbit FB reference change not
triggered correctly.
- 11:26 injection
- 12:30 stable beams, ALICE lumi leveling re-activated
- 20:30 beam dump: trip of RCBXV3.R5
- access needed to repair / change power converter RCBX / repair broken heater supply of MKI / for RD2.L2
|
08:30 meeting
MD report |