Title :
Intense corkscrewing and wobbling elliptic beams in a piecewise uniform magnetic focusing field
Author :
Otto, G.L. ; Chen, C. ; Roytershteyn, V. ; Pakter, R.
Author_Institution :
Plasma Sci. & Fusion Center, MIT, Cambridge, MA, USA
Abstract :
It is shown that intense corkscrewing and periodic wobbling elliptic beam equilibria exist in piecewise uniform magnetic fields. The envelope stability analysis reveals that the corkscrewing elliptic beams in a uniform magnetic field are stable, whereas the periodic wobbling elliptic beams are stable in certain regions in the parameter space. These results are useful not only in beam matching, but also in producing large-aspect-ratio sheet beams for high energy accelerators such as the Next Linear Collider as well as for use in high-power rf sources such as sheet-beam klystrons
Keywords :
accelerator magnets; particle accelerators; particle beam dynamics; particle beam focusing; particle beam stability; particle sources; NLC; Next Linear Collider; beam matching; beam stability; corkscrewing elliptic beams; envelope stability analysis; high energy accelerators; high-power radiofrequency sources; intense corkscrewing; large-aspect-ratio sheet beams; parameter space; piecewise uniform magnetic focusing field; quadrupole focusing fields; sheet-beam klystrons; ultrahigh-brightness beams; wobbling elliptic beams; Colliding beam accelerators; Colliding beam devices; Equations; Intrusion detection; Klystrons; Linear accelerators; Magnetic fields; Nuclear and plasma sciences; Particle beams; Stability analysis;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.987963
