Protecting the anode foil of a high-current electron accelerator against arc-discharge damage

Research output: Contribution to journalArticle

Abstract

The mechanism of anode foil damage during the extraction of a high-power pulsed electron beam from a high-current diode has been experimentally studied on a TEU-500 electron accelerator [1]. It is established that the breakage of the anode foil is caused by the appearance of cathode spots on its surface, the intense electron emission from these spots during positive voltage pulses (postpulses following the main negative pulse of accelerating voltage), and the formation of arc discharge in the interelectrode gap. The improvement of diode matching to the pulse-forming line of the accelerator and the use of an auxiliary electrode (anode) forming additional vacuum discharge gap (crowbar) with the cathode practically excludes the anode foil breakage by arc discharge and significantly increases the working life of the foil (up to ~105 electron beam pulses).

Original languageEnglish
Pages (from-to)730-732
Number of pages3
JournalTechnical Physics Letters
Volume35
Issue number8
DOIs
Publication statusPublished - 2009

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electron accelerators
arc discharges
high current
foils
anodes
damage
pulses
cathodes
diodes
electron beams
electric potential
electron emission
accelerators
vacuum
electrodes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Protecting the anode foil of a high-current electron accelerator against arc-discharge damage. / Ezhov, Vitaly Vladimirovich; Krastelev, E. V.; Remnev, G. E.

In: Technical Physics Letters, Vol. 35, No. 8, 2009, p. 730-732.

Research output: Contribution to journalArticle

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