Author: Yang, L.
Paper Title Page
THPMR008 Experimental Crosscheck of Algorithms for Magnet Lattice Correction 3400
 
  • V.V. Smaluk, W. Guo, Y. Hidaka, Y. Li, G.M. Wang, L. Yang, X. Yang
    BNL, Upton, Long Island, New York, USA
 
  Funding: Work supported by DOE contract DE-AC02-98CH10886
Performance, capabilities and limitations of various algorithms for linear magnet optics correction have been studied experimentally at NSLS-II. For the crosscheck, we have selected 4 algorithms based on turn-by-turn beam position analysis: weighted correction of betatron phase and amplitude, independent component analysis, model-independent analysis, and driving-terms-based linear optics characterization. A LOCO algorithm based on closed orbit measurement has been used as a reference. For the correction, either iterative solving of linear problem (matrix inversion with singular-value decomposition) or variational optimization has been used. For all the algorithms, accuracy limitations and convergence of linear lattice correction are discussed.
 
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMR008  
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