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RHIC Heavy Ion Run-11

RHIC Heavy Ion Run-11. Status Meeting Updates. Heavy Ion Run Final Update 6/24-27. Physics running, 41 stores Tandem intensity issues Access controls failure Access for RF trip. Outstanding items. Next 48 hours 6/27-29. Physics ends 2200 Tuesday 6/28

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RHIC Heavy Ion Run-11

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  1. RHIC Heavy Ion Run-11 Status Meeting Updates

  2. Heavy Ion Run Final Update 6/24-27 • Physics running, 41stores • Tandem intensity issues • Access controls failure • Access for RF trip Outstanding items

  3. Next 48 hours 6/27-29 • Physics ends 2200 Tuesday 6/28 • APEX and Power Supply tests until 0600 Wednesday 6/29

  4. Heavy Ion Run Update 6/22-6/24 • Physics running, 28 stores • No failed ramps • 4 aborted stores • ODH HW failure • Node card failure • Abort kicker trip • Power dip • Blue injection retuned • Reduced store length to 1 hour • Conducted vernier scans Outstanding items • Yellow end-ramp efficiency • Better overnight • Injection damper issues?

  5. Weekend outlook 6/24-27 • Network recovery • Continue Physics • APEX and MD next week? • Last meeting: Monday, noon

  6. Heavy Ion Run Update 6/20-6/22 • Setup started ~1730 Monday • Physics started ~1730 Tuesday • 6 stores • Injection & ramp collimation implemented • Correcting injection drift • Tandem reverted to optimal Au configuration Outstanding items • Blue injection efficiency • Yellow ramp efficiency • Injection damper issues?

  7. Next 48 hours 6/22-24 • Continue Physics • Store length? Optimal ~1 hour. • Can detectors remain on? • Status meetings M-W-F

  8. Heavy Ion Run Update 6/17-6/20 • Physics running, 12 stores • 2 failed ramps • Blue abort prefire • 1 aborted store • power dip, QLI • Tandem foil work conducted behind store Friday. • One additional store for AnDY (16081) • 200 GeV Physics ended 0800 Monday. Outstanding items • Blue injection efficiency • Storage cavity voltage calibration • Blue cavities • Requires working Blue longitudinal Schottky

  9. 27 GeV startup 6/20-22 • Starts Monday 1600 • IR access during hysteresis • Beam development follows • Re-establish injected beam • Ramp with feedback • Store setup • Status meetings M-W-F

  10. Heavy Ion Run Update 6/15-6/17 • Physics running, 6 stores • 1 failed ramp • LLRF test ramp • 1 aborted store • False BLM trip, 7W • IP2 crossing angle removed after maintenance • Corrected with feedbacks • Machine Development: 9 hours • 7 hours LLRF • Punctuated with 2 HLRF failures/accesses and Blue injection kicker failure • Second ramp needed • 2 hours AnDY collision setup Outstanding items • Tandem low on stripping foils • Blue injection efficiency • Blue transition • Landau problem again, fill 16071 • Storage cavity voltage calibration • Blue cavities • Requires working Blue longitudinal Schottky

  11. ZDC Accidental correction • Number of buckets: Blue filled bunches • STAR • ZDC Singles East, ch 1 • ZDC Singles West, ch 2 • ZDC, ch 3 Corrected=ZDC-{East*West/[(Blue-Blue/14)*78000]} • PHENIX • ZDC Singles North, ch 1.1 • ZDC Singles South, ch 1.2 • ZDC, ch 16 Corrected=ZDC-[North*South/(Blue*78000)]

  12. Final 200 GeV weekend 6/17-20 • Continue Physics • One more store with AnDY • One more set of vernier scans • One more test of β* squeeze • Tandem foil work behind store • APEX Monday 0800-1600 • √SNN = 27 GeV beam development starts Monday 1600 • Status meetings M-W-F

  13. Heavy Ion Run Update 6/13-6/15 • Physics running, 10 stores • 3 failed ramps • Yellow feedback target tunes too close? • Yellow debunching before accramp • Blue abort kicker prefire + quench • 4 aborted stores • Yo1-sxf1 trip • Yellow abort kicker prefire + quench • Wrong Chrom values left from MD • Cryo lead flow interlock • Beta squeeze, DX ramp test for AnDY work • Partially behind Booster RF failure • Some Tandem intensity issues Outstanding items • Blue injection efficiency • Storage cavity voltage calibration • Blue cavities • Requires working Blue longitudinal Schottky

  14. Next 48 hours 6/13-15 • LLRF firmware upgrade • Dump at 0900 tomorrow to begin • AnDY ZDC calibration • 2 stores following LLRF work • Continue Physics • √SNN = 27 GeV beam development next Monday • Status meetings M-W-F

  15. Heavy Ion Run Update 6/10-6/13 • Physics running, 14 stores • 2 failed ramps • Network switch failure, 11A • BBQ lock windows not set for ramp • 1 early dump • Rebucketing failure, HLRF misconfiguration after access Outstanding items • Blue longitudinal problems on ramp • Blue injection efficiency • Storage cavity voltage calibration • Blue cavities • LLRF firmware upgrade • 4 hrs, week of 6/13 • AnDY ZDC calibration

  16. 27 GeV medium energy run notes • Ramp name Au11v6 (work in progress) • 13.5 GeV beam energy • 3m β* at IP6 and IP8 • Below transition • No rebucketing • No longitudinal cooling • AP shifts start 0800 Monday 6/20

  17. Next 48 hours 6/13-15 • End of store MD: β* squeeze at IP6 • Slow ramp to try and eliminate rise in beam decay • Continue Physics • Continue fine tuning cooling for best performance. • √SNN = 27 GeV beam development next Monday • Status meetings M-W-F

  18. Heavy Ion Run Update 6/8-6/10 • Physics running, 4 stores • no failed ramps • 2 early dumps • Sextupole temperature problems in 1003B • APEX, 16 hours • Lost 4 hours to weather and related issues. Outstanding items • Blue longitudinal problems on ramp • Although, none on the last few ramps • Blue injection efficiency • Storage cavity voltage calibration • Blue cavities • LLRF firmware upgrade • 4 hrs, week of 6/13 • AnDYZDC calibration

  19. Weekend outlook 6/10-13 • Access for PHENIX RPC issues. • Continue Physics • Continue fine tuning cooling for best performance. • NOTE plan to run at √SNN = 27 GeV • Status meetings M-W-F

  20. Heavy Ion Run Update 6/6-6/8 • Physics running, 9 stores • 1 failed ramp • Early ramp loss, LLRF problem • 2 aborted stores • Yellow abort kicker • Yellow RF permit failure • Machine development • Beta* squeeze test, “MAD-X knob” • Some complications to measured results, will try again Outstanding items • Blue longitudinal problems on ramp • Blue injection efficiency • Storage cavity voltage calibration • Blue cavities • LLRF firmware upgrade • 4 hrs, week of 6/13

  21. Cooling on vs. off

  22. Next 48 hours 6/6-8 • Continue Physics • Continue fine tuning cooling for best performance. • Test β* squeeze at end of store. • APEX Thursday • Note NSRL/Tandem Si beam conflict • Status meetings M-W-F

  23. Heavy Ion Run Update 6/3-6/6 • Physics running, 14 stores • 3 failed ramps • Sextupole trip late in ramp • Early Blue loss, RF or node card? • 1 aborted store, QD problem • Landau cavity issues at transition • Machine development • Beta* squeeze test, “MAD-X knob” Outstanding items • Blue injection efficiency • Storage cavity voltage calibration • Blue cavities • LLRF firmware upgrade • 4 hrs, week of 6/13 • Stochastic cooling issues • BL kicker drive

  24. Next 48 hours 6/6-8 • Continue Physics • Continue fine tuning cooling for best performance. • APEX Wednesday • Note NSRL/Tandem Si beam conflict • Status meetings M-W-F

  25. Heavy Ion Run Update 5/27-6/1 • Maintenance, vacuum pump down complete Thursday 0330. • STAR, PHENIX polarity reversal • Physics running, 5 stores • 1 early dump • Low rates, Blue vacuum • 3 aborted stores • Yellow quench after rebucketing, YS5 cavity problem • Yellow abort late in store, related to activate? • Cryo lead flow • Machine development • Beta* squeeze test, all planes both IRs • Working point scan • Yellow RF cavity voltage calibration Outstanding items • Blue injection efficiency • Storage cavity voltage calibration • Blue cavities • LLRF firmware upgrade • 4 hrs, week of 6/13 • Stochastic cooling issues • BL kicker drive repair • BV not yet operational

  26. New RF voltage calibrations

  27. Run-10 Yellow working point Present Yellow working point

  28. Weekend outlook 6/3-6 • Restore stochastic cooling systems • Requires additional access • PHENIX access concurrently • Continue Physics • Vernier scans Friday: early in store • Status meetings M-W-F

  29. Heavy Ion Run Update 5/27-6/1 • Physics running, 19 stores • 5 failed ramps • Early loss attributed to y-qtrim? • Yellow RF trip on ramp • Fast Blue loss ~10 sec after γt (2x) • Unexplained fast Blue loss late in ramp • 5 aborted stores • PASS failure • Blue abort kicker • STAR magnet ramping/chiller problems • Early dump, YS3 trip/bad rebucketing • QLI at dump, Yellow debunched beam • 1 extended store • Insufficient Tandem beam • Some YL cooling issues, off for last 3 stores Outstanding items • Yellow, Blue store conditions • Blue injection efficiency • Storage cavity voltage calibration • 1 test ramp • BV cooling pickup • Maintenance day item • LLRF firmware upgrade • 4 hrs, week of 6/13 • AGS ag17-qgt magnet failure • Deferred to shutdown

  30. Next 48 hours 6/1-3 • Complete maintenance • BV cooling pickup • YL cooling kicker motion control • YS2, YS3 RF • Yellow collimator pindiodes • Resume Physics • STAR, PHENIX polarity switches • Vernier scans Thursday or Friday: early in store • Machine Development Thursday: • End of store: test beta* squeeze, 2 IRs 4 planes • Starts between daytime stores • Store conditions • Working point scans (dedicated ramp) • Storage voltage calibration • Status meetings M-W-F

  31. Heavy Ion Run Update 5/23-25 • APEX completed Wednesday • Attempt at fixing post-γt ramp loss • Physics running, 4 stores • 3 failed ramps • Early loss attributed to y-qtrim? • FEC reboot and subsequent steering error • Fast loss ~10 sec after γt • 1 aborted store • Unexplained permit drop 6a to 7a • AGS vacuum failure+Blue injection kicker • Other work completed concurrently • Machine Development deferred • Some YV cooling issues(limit switch fixed) Outstanding items • AGS ag17-qgt magnet failure • Long maintenance day or shutdown repair • Yellow, Blue store conditions • Blue injection efficiency • Storage cavity voltage calibration • 1 test ramp • BV cooling pickup • Maintenance day item • LLRF firmware upgrade • 4 hrs, week of 6/13

  32. Holiday weekend 5/27-31 • Continue Physics • Machine Development items: • Store conditions • Working point scans (dedicated ramp) • Yellow negative chromaticity? Blue? • Beta* squeeze – prepare for automation. • More beam • Ramp Efficiency • Ramp quicker after fill • Status meetings M-W-F • Run Coordinator will be off-island but on cell... • AP shifts: on call • ...but be prepared to log in remotely or come in if necessary.

  33. Heavy Ion Run Update 5/23-25 • Physics running, 7 stores • No aborted stores (2 early dumps, 1 late dump). • 5 failed ramps • Sextupole ramp rate (2x) • Post-transition loss (3x) • Accesses for repairs: YA1 cavity, stochastic cooling amplifiers, sextupole feedthrough ground current, collimator pin diodes… • QD controls problems (2x) • 3rd test of beta squeeze at store • 4 planes successfully squeezed at once • Requires more beam time to measure optics, interpret resulting rate changes. • Vernier scans conducted • Outstanding items • Blue, Yellow store conditions • MD Thursday • Storage cavity voltage calibration • Requires test ramp • Blue injection efficiency • Fine tuning • Offline evaluation • AGS: ag17-qgt, tune quad • ATR synchro errors • BV cooling pickup • Open vacuum to repair • LLRF firmware upgrade • 4 hrs week of 6/13

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