Bonn 2010 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 12: Beschleunigerphysik XI

HK 12.3: Gruppenbericht

Montag, 15. März 2010, 17:20–17:40, HG ÜR 9

beam dynamics simulations for gaussian and flat-top laser pulses at PITZ — •Xiaohui Wang, Galina Asova, and Frank Stephan — DESY, 15738 Zeuthen, Germany

The Photo Injector Test Facility at DESY, Zeuthen site (PITZ), has been built in order to develop and optimize electron sources for Free Electron Lasers (FELs) like FLASH and the European XFEL. The electron beam is generated by photoemission initiated with a laser pulse having a flat-top temporal profile. Compared to the Gaussian one, such a flat-top profile yields smaller transverse projected emittance[1].

In order to estimate the difference between the two cases, systematic simulations for 500 pC bunch charge are presented. Dependences of electron beam properties, like beam momentum, transverse beam size, phase space, emittance, on various machine parameters, e.g. gun phase, solenoid current, are shown as well.