Investigation of anode foil stability at high-current electron accelerator

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Results of experimental studies of anode foil destruction mechanisms are presented. The experiments have been done on the accelerator with the following parameters: voltage - up to 500 kV, e-beam current - up to 10 kA, pulse duration (FWHM) - 60 ns, pulse repetition rate - up to 3 Hz. It was found out that the formation of cathode spots on the anode foil surface as well as the current in the diode during the positive post-pulses following the main negative pulse of the accelerating voltage are the main reasons for the foil life time limitation. The improvement of the diode impedance matching with the output impedance of the pulsed power generator decreases the energy of the post-pulses and leads to a longer life time of the anode foil. The introduction of an additional anode electrode forming with the cathode a vacuum crowbar switch practically excludes damages of the anode foil and increases its life time up to 105 pulses.

Original languageEnglish
Title of host publication2008 17th International Conference on High Power Particle Beams, BEAMS'08
Publication statusPublished - 2008
Event17th International Conference on High Power Particle Beams, BEAMS'08 - Xi'an, China
Duration: 6 Jul 200811 Jul 2008

Other

Other17th International Conference on High Power Particle Beams, BEAMS'08
CountryChina
CityXi'an
Period6.7.0811.7.08

Fingerprint

electron accelerators
high current
foils
anodes
pulses
life (durability)
cathodes
diodes
electric generators
impedance matching
pulse repetition rate
electric potential
beam currents
destruction
pulse duration
accelerators
switches
impedance
damage
vacuum

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Ezhov, VV., Krastelev, E. G., & Remnev, G. E. (2008). Investigation of anode foil stability at high-current electron accelerator. In 2008 17th International Conference on High Power Particle Beams, BEAMS'08 [6202936]

Investigation of anode foil stability at high-current electron accelerator. / Ezhov, Vitaly Vladimirovich; Krastelev, E. G.; Remnev, G. E.

2008 17th International Conference on High Power Particle Beams, BEAMS'08. 2008. 6202936.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ezhov, VV, Krastelev, EG & Remnev, GE 2008, Investigation of anode foil stability at high-current electron accelerator. in 2008 17th International Conference on High Power Particle Beams, BEAMS'08., 6202936, 17th International Conference on High Power Particle Beams, BEAMS'08, Xi'an, China, 6.7.08.
Ezhov VV, Krastelev EG, Remnev GE. Investigation of anode foil stability at high-current electron accelerator. In 2008 17th International Conference on High Power Particle Beams, BEAMS'08. 2008. 6202936
Ezhov, Vitaly Vladimirovich ; Krastelev, E. G. ; Remnev, G. E. / Investigation of anode foil stability at high-current electron accelerator. 2008 17th International Conference on High Power Particle Beams, BEAMS'08. 2008.
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