| Title |
Surface Methods for the Computation of Charged-particle Transfer Maps from Magnetic Field Data |
| Authors |
- C.E. Mitchell
LBNL, Berkeley, California, USA
- A. J. Dragt
UMD, College Park, Maryland, USA
|
| Abstract |
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. Surface fitting algorithms provide a robust and reliable method for extracting this information accurately from 3-dimensional field data provided on a grid. Based on these realistic field models, Lie or other methods may be used to compute accurate design orbits and high-order symplectic maps about these orbits. We describe the implementation of a general method for treating magnetic elements with curved reference trajectories that is especially well-suited for extracting symplectic transfer maps for large-sagitta bending dipoles with fringe fields.
|
| Paper |
download THBJI3.PDF [1.050 MB / 5 pages] |
| Conference |
ICAP2015, Shanghai, China |
| Series |
International Computational Accelerator Physics Conference (12th) |
| Proceedings |
Link to full ICAP2015 Proccedings |
| Session |
Beam-physics, Magnet Design and Magnetic Measurements |
| Date |
15-Oct-15 10:15–12:15 |
| Main Classification |
G-1 Beam-physics, Magnet design and Magnetic Measurements |
| Keywords |
dipole, electron, multipole, storage-ring, optics |
| Publisher |
JACoW, Geneva, Switzerland |
| Editors |
Kwok C. Ko (SLAC, Menlo Park, CA, USA); Volker R.W. Schaa (GSI, Darmstadt, Germany); Chuanxiang Tang (Tsinghua University, Beijing, China); Heping Yan (SINAP, Shanghai, China) |
| ISBN |
978-3-95450-136-6 |
| Published |
February 2016 |
| Copyright |
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