RHIC pp Status http www agsrhichome bnl govAPSpin
RHIC pp Status http: //www. agsrhichome. bnl. gov/AP/Spin 2005/
May 4, 2005 RHIC Weekly Meeting BNL, Upton Beam experiment STAR ire Alarm Beam experiment Cryo lead flow problem Booster Main Magnet problem
May 4, 2005 RHIC Weekly Meeting BNL, Upton
May 4, 2005 RHIC Weekly Meeting BNL, Upton
Status o Luminosity achieved: n n n o 56 x 56, 1. 0 x 1011 bunch intensity Peak luminosity: ZDC 4 k. Hz ~ 1. 02 x 1031 cm-2 s-1 Good lifetime Polarization achieved at store: ~45% n CNI ready for 120 bunch mode May 4, 2005 RHIC Weekly Meeting BNL, Upton
Remaining Issues o o Emittance blowup during the ramp n Instability along the ramp: negative chromaticity: corrected Poor reproducibility of Yellow lifetime at store n Different golden orbit for store n Couple of good stores over weekend, but not reproducible May 4, 2005 RHIC Weekly Meeting BNL, Upton
Plan o Machine development to improve the performance n Peak Luminosity: o bunch intensity maxed out at 1 x 1011 for now o Go beyond 56 bunches o Eliminate emittance blowup during ramp: n n Correct the negative chromaticity along the ramp Integrated luminosity o Solve the yellow lifetime issue at store n n May 4, 2005 Yellow aperture study Yellow non-linear corrector setting RHIC Weekly Meeting BNL, Upton
Best store: LP^4 Lifetime: 17 hours May 4, 2005 RHIC Weekly Meeting BNL, Upton
May 4, 2005 RHIC Weekly Meeting BNL, Upton
Fill 6997 and Fill 6998 May 4, 2005 RHIC Weekly Meeting BNL, Upton
Angle bump at Store May 4, 2005 RHIC Weekly Meeting BNL, Upton
High peak luminosity May 4, 2005 RHIC Weekly Meeting BNL, Upton
May 4, 2005 RHIC Weekly Meeting BNL, Upton
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