friday
DESCRIPTION
Friday. 8h20: Beam back. Injection set-up for 4 x 2e10 per beam. Ramp to 3.5 TeV . Squeeze to 2m. 12h58: Stable beams, double intensity, new record luminosity: > 3e28 cm -2 s -1 in all IR’s . Lumi scans. 23h41: Beams dumped. RF cavity tripped due to quench. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Friday](https://reader036.vdocuments.us/reader036/viewer/2022081520/56816274550346895dd2e574/html5/thumbnails/1.jpg)
LHC planning
Friday 8h20: Beam back. Injection set-up for 4 x 2e10 per
beam. Ramp to 3.5 TeV. Squeeze to 2m. 12h58: Stable beams, double intensity, new record
luminosity: > 3e28 cm-2 s-1 in all IR’s. Lumi scans. 23h41: Beams dumped.
RF cavity tripped due to quench. RF piquet called for recovery. Cryo back rapidly, but checking in
detail. 2h20: Fully back, including resynchronization.
2h20: Recovery and injection setup: 4 x 2e10. 6h03: Start of ramp for stable beams.
6h27: Both beams dumped with interlock from BPM at P6. Orbit excursion happened 10 min earlier and beam was dumped
when setup beam flag went false (masks unmasked).
11-05-10
![Page 2: Friday](https://reader036.vdocuments.us/reader036/viewer/2022081520/56816274550346895dd2e574/html5/thumbnails/2.jpg)
LHC planning
Double Intensity and Luminosity
11-05-10
![Page 3: Friday](https://reader036.vdocuments.us/reader036/viewer/2022081520/56816274550346895dd2e574/html5/thumbnails/3.jpg)
LHC planning
Luminosity History
11-05-10
![Page 4: Friday](https://reader036.vdocuments.us/reader036/viewer/2022081520/56816274550346895dd2e574/html5/thumbnails/4.jpg)
LHC planning
RF cavity quench
11-05-10
![Page 5: Friday](https://reader036.vdocuments.us/reader036/viewer/2022081520/56816274550346895dd2e574/html5/thumbnails/5.jpg)
LHC planning
Loss of last ramp
11-05-10
Orbit ExcursionInterlock
Beam Dump(mask removed)
Not caused by orbit feedback. Reason to be analyzed. OK at time of dump.
![Page 6: Friday](https://reader036.vdocuments.us/reader036/viewer/2022081520/56816274550346895dd2e574/html5/thumbnails/6.jpg)
LHC planning
Ahead
11-05-10
NOW (advance by 5 hours)