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Low Emittance Gun Based on Field Emission (CROSBI ID 516704)

Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija

Ganter, Romain ; Raguin, Jean-Yves ; Candel, A. ; Dehler, Micha ; Gobrecht, Jens ; Gough, Christopher ; Ingold, Gerhard ; Leemann, Simon C. ; Li, K. ; Paraliev, Martin Lubenov et al. Low Emittance Gun Based on Field Emission // Proceedings of the 26th International Free Electron Laser Conference & 11th FEL Users Workshop / Bakker, Rene ; Giannessi, Luca ; Marsi et al. (ur.). Trst, 2004. str. 602-605-x

Podaci o odgovornosti

Ganter, Romain ; Raguin, Jean-Yves ; Candel, A. ; Dehler, Micha ; Gobrecht, Jens ; Gough, Christopher ; Ingold, Gerhard ; Leemann, Simon C. ; Li, K. ; Paraliev, Martin Lubenov ; Pedrozzi, Marco ; Rivkin, Leonid ; Sehr, Harald ; Schlott, Volker ; Streun, Andreas ; Wrulich, Albin ; Zelenika, Saša

engleski

Low Emittance Gun Based on Field Emission

The design of an electron gun capable of producing beam emittance one order of magnitude lower than current technology would reduce considerably the cost and size of a free electron laser radiating at 0.1 nm. Field emitter arrays (FEAs) including a gate and a focusing layer are an attractive technology for such high brightness sources. Electrons are extracted from micrometric tips thanks to voltage pulses applied between the gate and the tips. The focusing layer should then reduce the initial divergence of each emitted beamlet. This FEA will be inserted in a high-gradient diode configuration couplesd with a radiofrequency (RF) structure. In the diode part the high electric field (several hundreds of MV/m) will limit the degradation of emittance due to space-charge effects. The first acceleration will be obtained with high voltage pulses (about one megavolt in a few hundreds of nanoseconds) synchronized with the low voltage pulses applied to the FEA (200-300 V in less than one nanosecond at a frequency lower than a kilohertz). This diode part will then be followed by an RF accelerating structure in order to bring the electrons to relativistic energies.

electron gun; low emittance; field emitter arrays; high-gradient acceleration

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Podaci o prilogu

602-605-x.

2004.

objavljeno

Podaci o matičnoj publikaciji

Proceedings of the 26th International Free Electron Laser Conference & 11th FEL Users Workshop

Bakker, Rene ; Giannessi, Luca ; Marsi ; Marino ; Walker, Richard

Trst:

Podaci o skupu

26th International Free Electron Laser Conference & 11th FEL Users Workshop

poster

29.08.2004-03.09.2004

Trst, Italija

Povezanost rada

Fizika, Strojarstvo, Temeljne tehničke znanosti