Ultrashort electron bunches with low longitudinal emittance in multi-cell superconducting RF guns

Author

Volkov, V.N.

Author_Institution

Budker Inst. of Nucl. Phys., Novosibirsk, Russia

Volume

3

fYear

2003

fDate

12-16 May 2003

Firstpage

2041

Abstract

Ultra short bunches with low longitudinal emittance obtained using multi-cell superconducting RF gun having a longitudinally shorted first cell (down to 0.15 lambda) with a divergence of an accelerating RF field pattern near the photocathode are discussed. The optimised RF gun parameters and bunch characteristics computed by PARMELA are presented. Such 10 MeV ultra short electron bunches with low longitudinal emittance compatible for additional longitudinal compression scheme having RF buncher cavity and drift space or magnetic chicane downstream of them [V. Volkov, D. Janssen. Generation of Sub-picoseconds electron bunches in superconducting RF photocathode injector (these conference)]. This work was financially supported by Forschungs Zentrum of Rossendorf.

Keywords

accelerator RF systems; accelerator cavities; electron beams; electron guns; particle beam bunching; particle beam dynamics; photocathodes; superconducting cavity resonators; 10 MeV; PARMELA; RF buncher cavity; accelerating RF field pattern; bunch characteristics; drift space; longitudinal compression scheme; longitudinally shorted first cell; low longitudinal emittance; magnetic chicane; multicell superconducting RF guns; optimised RF gun parameters; photocathode; ultra short electron bunches; ultrashort electron bunches; Acceleration; Cathodes; Delay; Electron emission; Electron guns; Geometry; Laser modes; Nuclear physics; Radio frequency; Superconducting magnets;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the

ISSN

1063-3928

Print_ISBN

0-7803-7738-9

Type

conf

DOI

10.1109/PAC.2003.1288770

Filename

1288770