1 / 15

Fill 1743

Fill 1743 . Specific luminosities. Beam spot. Thursday morning. Fill lost to slow beam loss on vacuum pressure bump R8. Dumped on long running sum TCTVb.4R8 . LHCb confirms that it was a real event, their BCM had a similar signature as the losses on the TCTVb . . Vacuum layout R8.

colton
Download Presentation

Fill 1743

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. Fill 1743 LHC 8:30 meeting

  2. Specific luminosities LHC 8:30 meeting

  3. Beam spot LHC 8:30 meeting

  4. Thursday morning Fill lost to slow beam loss on vacuum pressure bump R8 LHC 8:30 meeting

  5. Dumped on long running sum TCTVb.4R8 LHCb confirms that it was a real event, their BCM had a similar signature as the losses on the TCTVb. LHC 8:30 meeting

  6. Vacuum layout R8 LHC 8:30 meeting

  7. Thursday continued • After dump, access required for: • SEU on QPS controller on RB 34 • quench heater power supply in S81 • 14:00 Beam back • 15:23 Start ramp • 16:15 Stable beams – 1744 • 44% UFO BLMQI.30L1.B1 • Went up to 51% of dump threshold on TCTVB R8... Clear vacuum spike. Event seen on the BRAN on R8! • Orbit has a very different reading in IP7 from before - temperature effect. • Performance not brilliant - blown-up trailing bunches, trailing trains… LHC 8:30 meeting

  8. Emittances Reyes Alemany LHC 8:30 meeting

  9. Bunch instabilities seen by ADT pick ups LHC 8:30 meeting

  10. Thursday continued The faulty FrontEnd is cfc-ccr-ctlxtim whose powersupply is tripping the whole barrette. The FrontEnd first line team is changing this crate now. Pierre Charrue plus some cleaning up afterwards • 16:59 #1744 Beams dumped • Communication problem: RF, TCDQ, • SIS says no LHC 8:30 meeting

  11. Fill 1745 20:57 Start ramp 21:41 Stable beams LHC 8:30 meeting

  12. 450 GeV - tactics LHC 8:30 meeting

  13. BSRT in stable beams LHC 8:30 meeting

  14. Night shift summary Nothing to report: 8 hours of stable beams - Walter & Eric LHC 8:30 meeting

  15. Incoming • Stable beams this morning • Access • QPS controller reset (SEU) • AGK checks – 2 hours with beam at 450 • before next step-up • 624 again • Seek approval for next step (768 bunches) LHC 8:30 meeting

More Related