Weekly Summary Tevatron Department Meeting Tevatron Coordinator D

Weekly Summary Tevatron Department Meeting Tevatron Coordinator D. Still April 22, 2011– April 29, 2011 Tevatron Coordinator - FNAL 9/5/2021 1

Store Summary Store Avg Init. Lumi (E 30) Avg Deliv’d Lumi (nb-1) Time (hr) How did it end? Comments 8684 358. 5 3242 3. 7 Normal Terminated Early to work on B 1 & E 1 wet engines 8688 287 5529 10. 7 Normal 8692 299. 5 8454 24 Normal EOS: tune mult cal & Lum Leveling due to Linac vac problems 8695 292. 5 8586 24. 4 Normal Moved D 0 IP position – EOS – T 980 8696 237. 2 5713 15. 6 Normal Shot from low pbar stash 8697 342 9259 20. 2 Normal TRF 7 has water leak 8698 388 7555 16. 6 Normal TRF 4 tripped during store 8700 405 - - On Going Tevatron Initial Lum Record Average 326 Tevatron Coordinator - FNAL 12/24/10 3

Problems • Quenched with no beam after 8692 terminated when Prepare for experimenter access was run. • TRF 7 developed water leak • TRF 4 tripped off during store 8698 Downtime: 9. 7 hours

Studies/Work Completed • Repaired E 1 and B 1 wet engine. • Tune Mult calibrations (EOS 1 hour). • Luminosity Leveling (EOS 1 hour). • T 980: First use of pixel to image channeled beam. • Moved D 0 IP vert down by 100 um and inside -200 um. • Tuned up Tune tracker

Initial Luminosity Tevatron Coordinator - FNAL 9/5/2021 5

Store Numbers Tevatron Coordinator - FNAL 9/5/2021 6

Orbit RMS for 70 weeks After fixing D 0 bump. Lesson Learned: Orbit, orbit

Small Problem with 8700 record

Compare Top 2 stores Squeeze losses 8700 & 7747 (4/16/2010)

Compare Top 2 stores Squeeze losses 8700 & 7747 (4/16/2010)

Friday to Friday Integrated 11

For the Year

Studies Request • • EOS: T 980 3 hours (Still) EOS: Hollow beam studies (Valishev) Dedicated: Pbar longitudinal damping studies (Tan) EOS/MOS: Separator scan Dedicated: Check DC beam at injection with bumper magnet (Hanna) Dedicated: Ecloud study (P only 1 hr) EOS/MOS: Luminosity Leveling (Moore) END OF RUN STUDIES: • Studies will begin to take place May 15 to May 27 Tevatron Coordinator - FNAL 9/5/2021 13