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Accelerating Beams to High Intensity and Storing Energy: Au104 Third Development Status

This update discusses the progress of the Au104 third development, including the successful storage of energy with 23 blue bunches and 56 yellow bunches. Challenges such as losses and beta* issues are also addressed, along with plans for future development.

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Accelerating Beams to High Intensity and Storing Energy: Au104 Third Development Status

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  1. Acceleration near 3rd order res. WP • Goal: • Accelerate full intensity beams(>1.0x10^9 bunch intensity, 111x111) to store energy with vertical betatron tune at ~0.005 distance from 1/3 • reproducibility of the ramp • Team: • Vincent, Al, Michiko, Steve, Don, Yun, Guillaume, Mei, Todd, Wolfram, Fulvia, Vadim, Greg, Dejan, …

  2. Status of Au104third development • 23 Blue bunches and 56 Yellow bunches made to store energy with • Blue working pt: 0.358, 0.343 • Yellow working pt: 0.31, 0.325 • Bunch intensity is about ~1.x10^11 • Very encouraging! • Tried 111x111 ramp, but failed due to permit pull triggered by beam losses in Blue

  3. Status of Au104third development 23 blue by 56 yellow bunches 0.3% lower energy than store

  4. Remaining Issues Losses creep up when beta* goes ~1.2m and below

  5. Remaining Issues Qy in Blue = 0.342 111 blue by 111 yellow bunches

  6. Plans • Coming session on 3/9-10: • Steve prepared a new ramp Au104third2, in which beta* squeeze from 1.7m to 0.7m is stopped for the final part of the ramp • Test Au104third2 by Don and other ps experts • No beam work • Development with beam can be resumed as soon as this new ramp is tested and tuned up. • Estimate: 12-24 hours beam time

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