Sub-nanosecond switching and acceleration to relativistic energies of field emission electron bunches from metallic nano-tips

Tsujino, S.; Paraliev, M.; Kirk, E.; Gough, C.; Ivkovic, S.; Braun, H.-H.
June 2011
Physics of Plasmas;Jun2011, Vol. 18 Issue 6, p064502
Academic Journal
The authors explore the generation of short electron bunches from a field-emitter array cathode consisting of nanometer-sized metallic tips that is compatible with an acceleration electric field above 10 MV/m. Sub-nanosecond field emission electron bunches were generated by applying fast electrical pulses to an on-chip electron extraction gate electrode of the cathode. The subsequent acceleration of the field emission electron bunches to 5 MeV was demonstrated using the combined diode-RF cavity SwissFEL electron gun test facility.


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