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Comprehensive Development of Ramp, Orbit, Tune, and Coupling Feedback System at RHIC

This project focuses on the development of a new timing setup procedure, global orbit feedback, and feedback systems for simultaneous control of orbit, tune, and coupling at RHIC during RUN-11. The post-mortem analysis of RUN-9 identified poor orbit control as a major issue, leading to modifications and successful operational implementation in RUN-10. Significant progress has been made in ramp development, with a reduced number of ramps required for achieving energy levels at 250 GeV in RUN-11, showcasing an improved operational efficiency. Key contributors include Y. Luo, A. Marusic, K. Mernick, M. Minty, and M. Wilinski.

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Comprehensive Development of Ramp, Orbit, Tune, and Coupling Feedback System at RHIC

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  1. Instrumentation Systems RHIC RUN-11 Startup ramp development with simultaneous orbit, tune, and coupling feedback new timing setup procedure (defer) new global orbit feedback (defer) TIME Meeting, M. Minty, January 18, 2011

  2. Ramp Development, RHIC RUN-11 post mortem, RUN-9: leading cause of failure: poor orbit control post-shutdown commissioning: RUN-9 : 13 ramps until blue/yellow at 250 GeV RUN-11: 4 ramps until blue/yellow at 250 GeV

  3. Ramp Development, RHIC RUN-11 tune / coupling feedback - Y. Luo, A. Marusic, K. Mernick, M. Minty, M. Wilinski, + operations history: proof-of-principle in RUN-6 (P. Cameron, Y. Luo, R. Jones et al) considerable modifications just before and during RUN-9 operational in RUN-10 RUN-8 RUN-9 RUN-11 TUNES COUPLING fill 9922 fill 14822 fill 10057

  4. Ramp Development, RHIC RUN-11 orbit feedback – A. Marusic, M. Minty, V. Ptitsyn, G. Robert-Demolaize history: proof-of-principle in RUN-10 BPM polarity reversal, early RUN-10 ORBITS measured just after attaining first ramp to 250 GeV: RUN-11 (blue) RUN-11 (yellow) RUN-9 horizontal vertical fill 10057 fill 14822 fill 14822

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