Author: Tydecks, T.
Paper Title Page
WEPOW010 Beam Lifetime Optimization by Adjusting the Sextupoles at the MLS and BESSY 2837
 
  • J. Li, J. Feikes, P. Goslawski, M. Ries, M. Ruprecht, T. Tydecks
    HZB, Berlin, Germany
 
  The Metrology Light Source (MLS) is a dedicated elec-tron storage ring for metrology applications with three families of sextupoles. The existing setting of the three independently powered sextupole families respective to lifetime were roughly determined by scanning their strengths against each other. As a flexible machine the sextupole families of the MLS can be regrouped into new families, which increase the complexity of the scan pro-cedure. Consequently the former strategy would be too time-consuming for refined global scan and it has to be complemented with physical constraints. Therefore a scheme has been developed to keep the chromaticity in a reasonable range during the scan and to reduce the degree of freedom, which is even more important at BESSY II with increasing number of independent sextupole cir-cuits. This paper presents the principle of sextupole scan and the experimental results at the MLS and preliminary test at BESSY II.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPOW010  
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