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Characterization of all-metallic field emitter arrays in combined diode-RF cavity electron gun

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6 Author(s)
Tsujino, S. ; Dept. of Synchrotron Radiat. & Nanotechnol., Paul Scherrer Inst., Villigen, Switzerland ; Kirk, E. ; Paraliev, M. ; Gough, C.
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Recently, nanosecond electrical switching and high-acceleration-field compatibility of single-gate all-metallic field-emitter arrays (FEAs) fabricated by molding and a self-aligned gate process were reported along with the emittance measurement. Here we present further optimization of the FEA driver and successful reduction of emission current pulse below ~0.5 ns, up to 5 MeV acceleration of field emission beams by post-acceleration of 200 keV pulses using a 1.5 GHz RF cavity of the combined diode-RF cavity electron gun of the SwissFEL gun test facility. In addition, evolution of field emission distribution by in-situ Ar gas conditioning process was studied.

Published in:

Vacuum Nanoelectronics Conference (IVNC), 2011 24th International

Date of Conference:

18-22 July 2011