Current nanopulse generation in RF electron gun with metal-dielectric cathode

Author

Ayzatsky, M.I. ; Khodak, I.V. ; Kushnir, V.A. ; Mitrochenko, V.V. ; Zhiglo, V.F.

Author_Institution

Nat. Sci. Centre, Kharkov Inst. of Phys. & Technol., Ukraine

Volume

3

fYear

2003

fDate

12-16 May 2003

Firstpage

2098

Abstract

The RF gun operation with metal-dielectric cathode is reviewed in the paper. The beam is extracted from the plasma developed during the microwave flashover dielectric in vacuum. The cathode was designed and electron beam dynamics was computer simulated. Modes of the gun operation were researched experimentally on the linear resonance electron accelerator. The beam at the gun output has the pulse current of 3.5-4.5 A with the current pulse duration of 40-50 ns and with particle energy of 300 keV. Some treatments of the beam development and the gun cavity response to the flashover in high intensity RF fields are given.

Keywords

accelerator RF systems; accelerator cavities; cathodes; electron accelerators; electron beams; electron guns; linear accelerators; particle beam dynamics; particle beam extraction; 3.5 to 4.5 A; 300 keV; 40 to 50 ns; RF electron gun; beam development; current nanopulse generation; current pulse duration; electron beam dynamics; gun cavity; gun operation; high intensity RF fields; linear resonance electron accelerator; metal-dielectric cathode; microwave flashover dielectric; particle energy; plasma; pulse current; vacuum; Cathodes; Computational modeling; Computer simulation; Dielectrics; Electron beams; Flashover; Particle beams; Plasma accelerators; Plasma simulation; Radio frequency;

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.2003.1288793

Filename

1288793