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Correction of magnetic optics and beam trajectory using LOCO based algorithm with expanded experimental data sets

Romanov, A. ; Edstrom Jr., D. ; Emanov, F. A. ; Koop, I. A. ; Perevedentsev, E. A. ; Rogovsky, Yu. A. ; Shwartz, D. B. ; Valishev, A.

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  • Título:
    Correction of magnetic optics and beam trajectory using LOCO based algorithm with expanded experimental data sets
  • Autor: Romanov, A. ; Edstrom Jr., D. ; Emanov, F. A. ; Koop, I. A. ; Perevedentsev, E. A. ; Rogovsky, Yu. A. ; Shwartz, D. B. ; Valishev, A.
  • Assuntos: Physics - Accelerator Physics
  • Descrição: Precise beam based measurement and correction of magnetic optics is essential for the successful operation of accelerators. The LOCO algorithm is a proven and reliable tool, which in some situations can be improved by using a broader class of experimental data. The standard data sets for LOCO include the closed orbit responses to dipole corrector variation, dispersion, and betatron tunes. This paper discusses the benefits from augmenting the data with four additional classes of experimental data: the beam shape measured with beam profile monitors; responses of closed orbit bumps to focusing field variations; betatron tune responses to focusing field variations; BPM-to-BPM betatron phase advances and beta functions in BPMs from turn-by-turn coordinates of kicked beam. All of the described features were implemented in the Sixdsimulation software that was used to correct the optics of the VEPP-2000 collider, the VEPP-5 injector booster ring, and the FAST linac. Comment: 10 pages, 12 figures, submitted to PRAB

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