1. Aims for the week Recover from technical stop and precycle at 10A/s
Status Monday morning
Pilot and nominal injection OK
Pilot bunch ramped to 3.5 TeV
Beam dump requalified at 450 GeV and 3.5 TeV
Optics OK at 450 GeV
Recover LHC operation with nominal bunch
Recover 13b operation  stable beams for ATLAS in present configuration
ATLAS and CMS magnets back to normal configuration.
Multi-bunch injection  increase intensity factor 2  25b operation
Afterward: stable running period with 25 b (~1.5 MJ)…
2/22/2019
LHC status

2. Monday - Recover LHC operation with nominal bunch
Access until 14:00
RCS.A45B1
Cryo instrumentation RQD.A23 and RQTL9.R7B1
BLM intervention on SR8.R
Mains bus bar detector communication problem in 56
CMS ALICE
In the shadow
Trajectory corrections in TT60+TI2
Trajectory corrections in TT40+TI8
Beam from 16:00
Setup and short time injecting nominal for injection checks
Ramp probe beam for chromaticity measurements
Problems with orbit feedback during ramp, orbit degrades
Beam 1 dumped by SIS position interlock on TCDQ-TCS
Beta-beat measurements at 3.5 TeV with beam 2
2/22/2019
LHC status

3. Monday - Recover LHC operation with nominal bunch
Beam again from 20:30
Injection of probes
Ramp – no losses, no FB issues, Q’ measurement on the way.
Minimized tune RT trims & incorporated into ramp.
Beta-beat measurements on the flat top. Very reproducible.
Squeeze to 3.5 m. Beta-beat measurement. Very reproducible.
Observed ‘erratic’ jumps in the RF frequency (up to 1 permill) from the RT system. Lost beam 2 with this.
2/22/2019
LHC status

4. Chromaticity measured through fill 1244
2/22/2019
LHC status

5. Beta-beat B1 on flat top (10/11 m)
2/22/2019
LHC status

6. Beta-beat B2 on flat top (10/11 m)
2/22/2019
LHC status

7. Beta-beat B1 at 3.5 m
2/22/2019
LHC status

8. Monday - Recover LHC operation with nominal bunch
Trip of RQT13.R1B2, beams dumped at 01.30
Access needed to fix
Beam again at 5.30
Ramp nominal bunches, transverse dampers on
Issues again with the RT feedback, but ramp OK
Beams lost while preparing squeeze, RQ9.R2
2/22/2019
LHC status

9. Tuesday Multi-bunch injection (up to 4 bunches/injection)
Update of BLM thresholds around injection areas by BI-BLM (no beam for 20 minutes).
SPS-LHC energy matching fine tuning.
Attempt for physics fill with 13b.
2/22/2019
LHC status

10. Interventions
BLM crate exchange IR7 (to be done before physics with 24b)
4-5 hours (including system tests).
2/22/2019
LHC status