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RHIC pp Status

RHIC pp Status. http://www.agsrhichome.bnl.gov/AP/Spin2005/. Beam experiment. Beam experiment. STAR ire Alarm. Cryo lead flow problem Booster Main Magnet problem. Status. Luminosity achieved: 56x56, 1.0x10 11 bunch intensity Peak luminosity : ZDC 4kHz ~ 1.02x10 31 cm -2 s -1

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RHIC pp Status

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  1. RHIC pp Status http://www.agsrhichome.bnl.gov/AP/Spin2005/

  2. Beam experiment Beam experiment STAR ire Alarm Cryo lead flow problem Booster Main Magnet problem RHIC Weekly Meeting BNL, Upton

  3. RHIC Weekly Meeting BNL, Upton

  4. RHIC Weekly Meeting BNL, Upton

  5. Status • Luminosity achieved: • 56x56, 1.0x1011 bunch intensity • Peak luminosity: ZDC 4kHz ~ 1.02x1031cm-2s-1 • Good lifetime • Polarization achieved at store: ~45% • CNI ready for 120 bunch mode RHIC Weekly Meeting BNL, Upton

  6. Remaining Issues • Emittance blowup during the ramp • Instability along the ramp: negative chromaticity: corrected • Poor reproducibility of Yellow lifetime at store • Different golden orbit for store • Couple of good stores over weekend, but not reproducible RHIC Weekly Meeting BNL, Upton

  7. Plan • Machine development to improve the performance • Peak Luminosity: • bunch intensity maxed out at 1x1011 for now • Go beyond 56 bunches • Eliminate emittance blowup during ramp: • Correct the negative chromaticity along the ramp • Integrated luminosity • Solve the yellow lifetime issue at store • Yellow aperture study • Yellow non-linear corrector setting RHIC Weekly Meeting BNL, Upton

  8. Best store: LP^4 Lifetime: 17 hours RHIC Weekly Meeting BNL, Upton

  9. RHIC Weekly Meeting BNL, Upton

  10. Fill 6997 and Fill 6998 RHIC Weekly Meeting BNL, Upton

  11. Angle bump at Store RHIC Weekly Meeting BNL, Upton

  12. High peak luminosity RHIC Weekly Meeting BNL, Upton

  13. RHIC Weekly Meeting BNL, Upton

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