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AGS/Booster PP Status

Haixin Huang. April 16, 2013 Time Meeting. AGS/Booster PP Status. Status. Pulse power supply group fixed G10. I mproved the AtR efficiency after April 8. AGS continued to provide near 70% polarization for RHIC injection.

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AGS/Booster PP Status

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  1. HaixinHuang April 16, 2013 TimeMeeting AGS/Booster PP Status

  2. Status • Pulse power supply group fixed G10. Improved the AtR efficiency after April 8. • AGS continued to provide near 70% polarization for RHIC injection. • The Booster h=2 was tested in the Booster with higher bunch intensity (near 2*1011, 6*1011 Booster input ). Lower polarization with h=2 (66.2+-0.9) than h=1 (71.4+-1.1), as we sacrificed on the vertical scraping in the Booster. Vertical emittance is about 10% higher in h=2 case, but no difference seen in horizontal. Longitudinal remittance is reduced from1.04 eV-s to 0.77eV-s. • Longitudinal emittance increased from .63eV-s to 1.04eV-s on the ramp. RF group removed the bunch oscillation at injection. Keith tuned transition jump. • With modest quad pumping, the bunch length at AGS extraction can be reduced to 23.7ns from 29ns. We will try that for next RHIC fill. • There is a plan to do 2.5GeV setup next week (after NSRL operation during day). Haixin Huang

  3. AGS Flattop Remittance for h=2 and h=1 H=1 H=2 AGS bunch intensity was 2*1011. Different scraping in the Booster. Vertical remittance is larger with h=2. Haixin Huang

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