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APEX Schedule Planned Feb. 23, 2011

APEX Schedule Planned Feb. 23, 2011. ~ 3 ramps. 12x12 store Physics store. 6x6 store AC dipole. Store 109x109. Injection 109x109. Injection 6x6. back2physics. 2 6x6 ramp+ 1 109x109 ramp Energy ramp only. Energy ramp May need rot0 for collision. Spin Flipper Bai,Pablo,Oddo,

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APEX Schedule Planned Feb. 23, 2011

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  1. APEX Schedule Planned Feb. 23, 2011 ~ 3 ramps 12x12 store Physics store 6x6 store AC dipole Store 109x109 Injection 109x109 Injection 6x6 back2physics 2 6x6 ramp+ 1 109x109 ramp Energy ramp only Energy ramp May need rot0 for collision Spin Flipper Bai,Pablo,Oddo, Craig,Kevin Beta* unsqueeze +s* adjustment GRD+team Orbit, tune, coupling,chromaticity feedback Minty, Al Optics measurements SBST optics correction Bai, Glenn, Joe, GRD Optics measurements Bai, Glenn, Joe, GRD Lower gammaT limit Montag Polarization profile measurement Huang+RHIC CNI team Polarization profile measurement Huang+RHIC CNI team 10Hz orbit feedback at store Michnoff 10HzGOFB ORM(20min) store activity Minty, Liu 8am 12pm 2pm 5pm 7pm 9pm 12am 11pm

  2. APEX Schedule Feb. 23, 2011 ~ 3 ramps 12x12 store Physics store 6x6 store AC dipole Store 109x109 Injection 109x109 Injection 6x6 back2physics 2 6x6 ramp Energy ramp only Energy ramp May need rot0 for collision Spin Flipper Bai,Pablo,Oddo, Craig,Kevin Beta* unsqueeze +s* adjustment GRD+team IR non-linear correction Zimmer Optics measurements SBST optics correction Bai, Glenn, Joe, GRD Optics measurements Bai, Glenn, Joe, GRD Lower gammaT limit Montag Polarization profile measurement Huang+RHIC CNI team Polarization profile measurement Huang+RHIC CNI team 10Hz orbit feedback at store Michnoff 10HzGOFB ORM(20min) store activity Minty, Liu 8am 12pm 2pm 5pm 7pm 9pm 12am 11pm

  3. Effects of the un-squeezing • Asked for a 10% change, from 0.6412 (calculated) to 0.7054. • Tune & Chromaticity changed after the un-squeezing was completed.

  4. Optics Measurements • Un-squeezing is effectively seen by Mei’s measurements: BEFORE AFTER

  5. Optics Correction

  6. Optics Correction Applying 40% IP2+12 correction removing 40% IP2+12 correction 80% IP6, 20% IP12 correction and IP2 20% 80% IP6, 20% IP12 correction 80% IP6 correction Applying 80% IP6 correction Removing all correction

  7. Polarization Profile Measurements • intensity scan at injection with thin and thick target for 12 bunches. AGS polarization measurement were also taken. • polarization profile measurements taken at store for both rings and both planes. For this ramp, the vertical tune swing was moved earlier to below 100GeV. Slightly higher polarization but lower intensity compared to regular fill. The polarization profiles are more profound in blue than in yellow. • Induced current for BNL and Hamamatsu detectors were measured. Hamamatsu detectors have less induced

  8. Next APEX Session • March 9

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