Author: Franchi, A.
Paper Title Page
MOYCA01 Review of Linear Optics Measurements and Corrections in Accelerators 20
  • R. Tomás
    CERN, Geneva, Switzerland
  • M. Aiba
    PSI, Villigen PSI, Switzerland
  • A. Franchi
    ESRF, Grenoble, France
  • U. Iriso
    ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
  The measurement and correction of optics parameters has been a major concern since the advent of strong focusing synchrotron accelerators. Traditionally, colliders have led the development of methods for optics control based on turn-by-turn centroid data, while lepton storage rings have focused on closed orbit response techniques. Recently considerable efforts are being invested in comparing these techniques in different light sources and colliders. An emerging class of less invasive optics control techniques based on the optimization of performance related observables is demonstrating a great potential. A review of the existing techniques is presented highlighting comparisons, merits and limitations.  
slides icon Slides MOYCA01 [4.184 MB]  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOYCA01  
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THPMB045 Comparison of Optics Measurement Methods in ESRF 3343
  • L. Malina, J.M. Coello de Portugal, A. Langner, T. Persson, P.K. Skowroński, R. Tomás
    CERN, Geneva, Switzerland
  • L. Farvacque, A. Franchi
    ESRF, Grenoble, France
  The N-BPM and the Amplitude methods, which are used in the LHC for beam optics measurement, were applied to the ESRF storage ring. We compare the results to the Orbit Response Matrix (ORM) method that is routinely used in the ESRF. These techniques are conceptually different since the ORM is based on the orbit response upon strength variation of steering magnets while the LHC techniques rely on the harmonic analysis of turn-by-turn position excited by a kicker or an AC dipole. Finally, we compare these methods and show the differences in their performance in the ESRF environment.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMB045  
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