Naslov
Preliminary Results on a Low Emittance Gun Based on Field Emission

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

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 9th European Particle Accelerator Conference (EPAC 04) / - , 2004, 306-308

Skup
9th European Particle Accelerator Conference (EPAC 04)

Mjesto i datum
Luzern, Švicarska, 05.07.2004. - 09.07.2004

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
electron gun; low emittance; field emitter arrays

Sažetak
The development of a new electron gun with the lowest possible emittance would help reduce the total length and cost of a free electron laser. Recent progress in vacuum microelectronics makes field emitter arrays (FEAs) an attractive technology to explore for high brightness sources. Indeed, several thousands of microscopic tips can be deposited on a 1 mm diameter area. Electrons are then extracted by a first grid layer close to the tip apex and focused by a second grid layer one micrometer above the tip apex. In order to be a good candidate for a low emittance gun, field emission cathodes must provide at least the peak current, stability and homogeneity of current state of the art electron sources. Smaller initial divergence should then be achieved by the focusing grid and the intrinsic properties of the field emission process. Another important aspect for improving electron guns is to preserve the emittance during beam acceleration.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA