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RHIC Operation Status

RHIC Operation Status. Yun Luo, yluo@bnl.gov ( 2012 June 19, Time Meeting ). Operation Updates.

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RHIC Operation Status

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  1. RHIC Operation Status Yun Luo, yluo@bnl.gov ( 2012 June 19, Time Meeting )

  2. Operation Updates RHIC Continues Physics stores. APEX took placed between 08:00AM to mid-night on Wednesday. Continued working bunch intensity increase, improving ramp efficiency, and maximizing integrated luminosity during store. Currently highest bunch intensities at injection are 4.80e9/ 1.51e9 ( Fill 16993 ). Highest bunch intensities at store are 4.06e9/1.40e9 ( Fill 16993 ). The highest Phenix rate is 63.5 kHz ( Fill 16993 ). Major Machine Failures: Thu: Yellow Landau cavity tripped off on ramp several times Sun: Cyro problem, about 9 hour loss Mon: BS1 broken, needs 3-4 hour access, repairing delayed Tue: YI10-TQ4 tripped off again, swapped out

  3. Beam Intensities & Experiment Rates Cryo Failure APEX

  4. Pushing RHIC Bunch Intensities Last week is a record breaking week. Keith Zeno is doing a great job in fine tuning injectors.

  5. Recent Physics Stores New record of integrated luminosity per store

  6. Integrated Luminosity ( C-AD ) Phenix Star

  7. Plan of the Last Week • Steady BACK-TO-BACK Physics stores reduce downtime colliding at IR2 for Star some time, 2 fills needed • Push RHIC bunch intensities at injection There is still some room to push bunch intensities • Improve RHIC ramp efficiency

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