Author: Gorda, O.E.
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THPMB002 Beam Dynamics and Closed Orbit Correction at the Collector Ring 3216
  • O.E. Gorda, A. Dolinskyy, O.A. Kovalenko
    GSI, Darmstadt, Germany
  • I. Koop, D.B. Shwartz
    BINP SB RAS, Novosibirsk, Russia
  • Yu. A. Rogovsky
    Budker INP & NSU, Novosibirsk, Russia
  The Collector Ring (CR) has been designed for fast cooling of hot antiproton or ion beams at FAIR. Its ion-optical layout and system design has been recently finalized after careful optimizations aiming at improvement of the beam parameters and machine performance. In this paper we present the simulations of the transverse beam dynamics for the different ion-optical modes of the CR. Particle tracking calculations have been performed to evaluate an influence of the magnet imperfections on the dynamic aperture. The analysis and correction of the closed orbit distortions due to the magnet misalignments is also discussed.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMB002  
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THPMB003 Orbit Response Matrix Analysis for FAIR Storage Rings 3219
  • O.A. Kovalenko, A. Dolinskyy, O.E. Gorda, S.A. Litvinov
    GSI, Darmstadt, Germany
  The Orbit Response Matrix (ORM) analysis is a method which allows to find the sources of discrepancies between design and real optics of an accelerator machine. In particular, with this technique one retrieves information about gradient errors, dipole corrector gain errors etc. Orbit response matrix is computed by measuring orbit deviations caused by single kicks of corrector magnets. With fitting the matrix one obtains the ion optics which best describes the real accelerator. The ORM analysis, presented in the paper, is employed to find error sources in the FAIR storage rings CR and HESR during and after the beam commissioning. The algorithm itself was implemented in Python programming language with a help of linear algebra libraries. The ORM analysis accuracy as well as its limitations are addressed in the paper.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMB003  
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