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Mahgoub, M.

Paper Title Page
TUPE011 Generating Low Transverse Emittance Beams for Linac Based Light Sources at PITZ 2167
 
  • S. Rimjaem, J.W. Bähr, H.-J. Grabosch, M. Hänel, Ye. Ivanisenko, G. Klemz, M. Krasilnikov, M. Mahgoub, M. Otevrel, B. Petrosyan, S. Riemann, J. Rönsch-Schulenburg, R. Spesyvtsev, F. Stephan
    DESY Zeuthen, Zeuthen
  • G. Asova, L. Staykov
    INRNE, Sofia
  • K. Flöttmann, S. Lederer, S. Schreiber
    DESY, Hamburg
  • L. Hakobyan, M.A. Khojoyan
    YerPhI, Yerevan
  • M.A. Nozdrin
    JINR, Dubna, Moscow Region
  • B.D. O'Shea
    UCLA, Los Angeles, California
  • R. Richter
    Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin
  • A. Shapovalov
    MEPhI, Moscow
  • G. Vashchenko
    NSC/KIPT, Kharkov
  • I. Will
    MBI, Berlin
 
 

At the Photo Injector Test facility at DESY, Zeuthen site (PITZ), high brightness electron sources for linac based Free Electron Lasers (FELs), like FLASH and the European XFEL are developed and characterized. The electrons are generated via the photoeffect at a cesium telluride (Cs2Te) cathode and are accelerated by a 1.6-cell L-band RF-gun cavity with an accelerating gradient at the cathode of about 60 MV/m. The profile of the cathode laser pulse has been optimized yielding small emittances using laser pulse shaping methods. The transverse projected emittance is measured by a single slit scan technique. The measurement program in the last run period at PITZ concentrated on emittance measurements for the nominal 1 nC beam and emittance optimization for lower bunch charges. The recent results show that normalized projected emittances of about 1 mm-mrad for 1 nC charge and below 0.5 mm-mrad for 250 pC bunch charges can be realized at PITZ. The facility setup and measurement results including the uncertainty of the measured values will be reported and discussed in this contribution.