Author: Mitchell, C.E.
Paper Title Page
TUOCN1 Accurate Computation of Transfer Maps for Realistic Beamline Elements from Surface Data 742
 
  • C.E. Mitchell
    NRL, Washington, DC, USA
  • A. Dragt
    UMD, College Park, Maryland, USA
 
  The behavior of orbits in charged-particle beam transport systems, including both linear and circular accelerators as well as final focus sections and spectrometers, can depend sensitively on nonlinear fringe-field and high-order-multipole effects in the various beam-line elements. The inclusion of these effects requires a detailed and realistic model of the interior and fringe fields, including their high spatial derivatives. A collection of surface fitting methods has been developed for extracting this information accurately from 3-dimensional field data on a grid, as provided by various 3-dimensional finite-element field codes. Based on these realistic field models, Lie or other methods may be used to compute accurate design orbits and accurate transfer maps about these orbits. This talk will provide a description of the methods along with example applications. An exactly-soluble but numerically challenging model field is used to provide a rigorous collection of performance benchmarks.  
slides icon Slides TUOCN1 [1.630 MB]