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Tevatron Department Meeting Summary: June 10-24, 2011

Stay updated with the latest Tevatron Department Meeting summaries, including recent store problems, completed studies/work, and delivered luminosity for the week. Key insights and status updates provided by Tevatron Coordinator at FNAL.

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Tevatron Department Meeting Summary: June 10-24, 2011

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  1. Weekly SummaryTevatron Department Meeting Tevatron Coordinator Xiolong Zhang/C.Y. Tan June 10, 2011- June 24, 2011 Tevatron Coordinator - FNAL 6/24/2011 1

  2. Store Summary Tevatron Coordinator - FNAL 12/24/10 3

  3. Store Summary Tevatron Coordinator - FNAL 12/24/10 3

  4. Recent Stores

  5. Problems • T:HC49 trip aborting store 8805 • Pbar long. blown up for store 8809. • Pbar blown up during injection for store 8809 and 8810. • Store 8809 was cleanly abort due to a bad vacuum indication at B3. • St 8816 lost from lightning. • St 8830: C4 BPMs died, hard reboot did not bring it back.

  6. Studies/Work Completed • HC49 PS replaced. • TRF3 trip during store 8812. • F4 flywheel repair (end of st 8820) • Topped up Tev LCW water. • C4 BPM processor replaced. • Have been smoothing much more aggressively between stores (all the way through lbseq 25). • Proton tune optimization @collision to reduce halo losses and improve lifetime; orbit smoothing. • Luminosity levelling

  7. Initial Luminosity Tevatron Coordinator - FNAL 7

  8. Pbars does not seem to blow up as much after 8635 (Apr 11) Apr 14 TRF2 PA changed. Correlated??? Tevatron Coordinator - FNAL

  9. Luminosity Delivered for the Week Record week: Monday to Monday 78.4 pb-1. 13 Jun to 20 Jun. Accelerator Status 9 Friday, May 6, 2011

  10. For the Year

  11. Studies Request • Hollow beam studies - Part of End of Run studies this week • Dedicated: Pbar longitudinal damping studies (Tan) • Shot set up: Proton damping (Tan) • EOS/MOS: Separator scan • Dedicated: Check DC beam at injection with bumper magnet (Hanna) • SOS: Luminosity Leveling (Moore) Tevatron Coordinator - FNAL 11

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