Title :
Beam dynamics issues in an extended relativistic klystron
Author :
Giordanot, G. ; Li, H. ; Goffeney, N. ; Henestroza, E. ; Sessler, A. ; Yu, S. ; Houck, T. ; Westenskow, G.
Author_Institution :
Lawrence Berkeley Lab., CA, USA
Abstract :
Preliminary studies of beam dynamics in a relativistic klystron were done to support a design study for a 1 TeV relativistic klystron two-beam accelerator (RK-TBA), 11.424 GHz microwave power source. This paper updates those studies. An induction accelerator beam is modulated, accelerated to 10 MeV, and injected into the RK with a RF current of about 1.2 kA. The main portion of the RK is the 300-m long extraction section comprised of 150 traveling wave output structures and 900 induction accelerator cells. A periodic system of permanent quadrupole magnets is used for focusing. One and two dimensional numerical studies of beam modulation, injection into the main RK, transport and longitudinal equilibrium are presented. Transverse beam instability studies including Landau damping and the “Betatron Node Scheme” are presented
Keywords :
accelerator RF systems; klystrons; particle beam dynamics; particle beam focusing; permanent magnets; 1 TeV relativistic klystron two-beam accelerator; Betatron Node Scheme; Landau damping; RF current; RK-TBA; beam dynamics; beam modulation; extended relativistic klystron; extraction section; focusing; induction accelerator beam; induction accelerator cells; injection; longitudinal equilibrium; microwave power source; modulated beam; permanent quadrupole magnets; transport; transverse beam instability; traveling wave output structures; Acceleration; Choppers; Circuit simulation; Contracts; Coupling circuits; Klystrons; Laboratories; Optical coupling; Optical modulation; Particle beams;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.504776
