Title :
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
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;
Conference_Titel :
Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the
Print_ISBN :
0-7803-7738-9
DOI :
10.1109/PAC.2003.1288793
