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Run 10 Status

Run 10 Status. http://www.cadops.bnl.gov/AP/RHIC2010/ http://www.cadops.bnl.gov/AP/RHIC2010/. Status. Running with 111x111, >1.3e9 ions/bunch With rebucketing, 4.8 MV in Yellow, 4.8 MV Blue ZDC rates >40kHz peak Stochastic Cooling status Vacuum spiked at Blue Longitudinal , BL now off

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Run 10 Status

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  1. Run 10 Status http://www.cadops.bnl.gov/AP/RHIC2010/ http://www.cadops.bnl.gov/AP/RHIC2010/

  2. Status • Running with 111x111, >1.3e9 ions/bunch • With rebucketing, 4.8 MV in Yellow, 4.8 MV Blue • ZDC rates >40kHz peak • Stochastic Cooling status • Vacuum spiked at Blue Longitudinal , BL now off • Transverse cooling alternating, Blue / Yellow • Rebucketing & ZDC rates • Latest store, try 4.6 MV (600 kV on “colored” cavities, 700 kV on common cavities.)

  3. Run 1062.4 GeV Setup

  4. 19.5 GeV/N 31.2 GeV/N

  5. Preparations • 2 days for setup (hopefully less) • Shift schedule is posted • storage rf system can be used above 19.5 GeV/nucleon • We will use it for the 31.2 GeV run • (We may be able to use it for the 19.5 GeV run) • Expect to work on rebucketing the evening on 1st day • Beta* ~ 2.5m, all crossing angles are 0. • Basic configuration is same at injection through transition • Develop checklists for energy change

  6. Basic Plan • Injection doesn’t change • RF setup at injection (synchro) remains the same • Ramp changes slightly even before transition • Keep gamma jumps as they are (time changes slightly) • Beta-squeeze after transition changes • Yellow dipole feedback – timing will change • Brho loop timing will change • Use tune/coupling and orbit feedback for ramp – 3 ramps • Rebucketing setup = 1 shift (new frequency, new phases) • Collimation and orbit setup

  7. Schedule: • Thurs. March 18 • 8 am: end 200 GeV run • Switch to new ramp (modify scripts/sequences) • Check timing – brho loop, loss mons., yellow dipole feedback • Run 6x6 bunch ramp with tune/coupling and orbit feedback including data-stores for p.s. group • Do second 6x6 bunch ramp with feedback w/ data-stores • Run feed-forward ramp and tune ramp efficiencies • 4 pm: setup rebucketing and collisions • Once rebucketing is working, work on store setup (scale IR corrections and check) • Fri. March 19 • continue collimation setup, store orbits • Start raising number of bunches • Physics by evening

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