1 / 6

Sunday 12th

Sunday 12th. 00:29 Stable beam fill #1864. Initial lumi 1.1e33 07:17 beam dumped by trip of RD2.L1 Integrated lumi 23 pb-1 10:30 Cryo maintain back 11:30 Injecting - some injection steering 13:56 Stable beam fill #1865 . Initial lumi 1.1e33

brooklyn
Télécharger la présentation

Sunday 12th

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Sunday 12th • 00:29 Stable beam fill #1864. Initial lumi 1.1e33 • 07:17 beam dumped by trip of RD2.L1 • Integrated lumi 23 pb-1 • 10:30 Cryo maintain back • 11:30 Injecting - some injection steering • 13:56 Stable beam fill #1865. Initial lumi 1.1e33 • 03:22 Beams dumped, collimator interlock • Integrated lumi42 pb-1 • 05:00 Access for change of power converter • 07:13 Injecting probe beam LHC 8:30 meeting

  2. Trip of RD2.L1 Michel Combe Bus-bar quench, following cryo valve control problem Heaters fired, quenched RD2.L1 Vacuum valves in around RD2.L1 following vacuum spike,2.1 s after dump request by PIC LHC 8:30 meeting

  3. Fill #1865 – LHCb levelling problem Richard Jacobsson • We went for too high with the optimize all routine for LHCb which went up to 600 (ub.s)^-1! It looks like we were heads on in Vertical and completely OFF in Horizontal. The Optimize All (in H plane) put us too much in collisions. We tripped LHCb. • Put manually LHCb to 250 (ub.s)^-1 on request of LHCb, with levelling OFF • Smoothly restarted the leveling 1/2 hour later @ 300 (ub.s)^-1 • Short term improvements to prevent this in the future LHC 8:30 meeting

  4. Including fill #1865: @ 915 pb-1 LHC 8:30 meeting

  5. Integrated efficiency indicator Temperatures Bunch length • MKI profiting from the longer bunch lengths • Like cryo, collimators,.... LHC 8:30 meeting

  6. Plan • Physics 1092 x 1092 bunches, trains 144 bunches • Not for today • Physics 1236 x 1236 bunches, trains 144 bunches • rMPP approval procedure OK • After RF main power coupler conditioning, which would otherwise be at the limit • Outstanding • End of fill: TCL adjustment • Q’ decay following long fill LHC 8:30 meeting

More Related