W. Herr et al., Hybrid fast multipole method applied to beam-beam collisions in the strong-strong regime - art. no. 054402, PHY R SPE T, 4(5), 2001, pp. NIL_37-NIL_45
Citations number
22
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
The strong-strong interactions of two colliding beams are simulated by trac
king the motion of a set of macroparticles. The field generated by each dis
tribution is evaluated using the fast multipole method together with some e
lements of particle-mesh methods. This technique allows us to check the exa
ct frequencies of the coherent modes and the frequencies of oscillations of
individual particles in the beam. The agreement between the simulations an
d analytical calculations is largely improved. Furthermore, it is an effici
ent method to study the coherent modes in the case of separated beams.