Axial representation of external electromagnetic fields for particle tracking in accelerators
Accelerator Physics
2019-09-10 v1
Abstract
We derive a power series representation of an arbitrary electromagnetic field near some axis through the coaxial field components on the axis. The obtained equations are compared with Fourier-Bessel series approach and verified by several examples. It is shown that for each azimuthal mode we need only two real functions on the axis in order to describe the field in a source free region near to it. The representation of dipole mode in a superconducting radio-frequency gun is analyzed.
Cite
@article{arxiv.1909.03438,
title = {Axial representation of external electromagnetic fields for particle tracking in accelerators},
author = {Igor Zagorodnov and Martin Dohlus},
journal= {arXiv preprint arXiv:1909.03438},
year = {2019}
}
Comments
23 pages, 5 figures