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Staykov, L.

Paper Title Page
TUP035 New Experimental Results from PITZ 474
  • F. Stephan, J.W. Bähr, C.H. Boulware, H.-J. Grabosch, M. Hänel, Ye. Ivanisenko, M. Krasilnikov, B. Petrosyan, S. Riemann, S. Rimjaem, T.A. Scholz, R. Spesyvtsev
    DESY Zeuthen, Zeuthen
  • G. Asova, L. Staykov
    INRNE, Sofia
  • K. Flöttmann, S. Lederer
    DESY, Hamburg
  • L. Hakobyan, M.K. Khojoyan
    YerPhI, Yerevan
  • F. Jackson
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
  • P.M. Michelato, L. Monaco, C. Pagani, D. Sertore
    INFN/LASA, Segrate (MI)
  • R. Richter
    BESSY GmbH, Berlin
  • J. Rönsch
    Uni HH, Hamburg
  • A. Shapovalov
    MEPhI, Moscow

Funding: This work was partly supported by the European Community, contracts RII3-CT-2004-506008 and 011935, and by the 'Impuls- und Vernetzungsfonds' of the Helmholtz Association, contract number VH-FZ-005.
The Photo Injector Test facility at DESY, Zeuthen site, (PITZ) was built to develop and optimize high brightness electron sources for Free Electron Lasers (FELs) like FLASH and the European XFEL. In the last shutdown a new RF gun cavity with improved water cooling was installed and conditioned. It is the first rf gun where the surface cleaning was done with dry ice technique instead of high pressure water rinsing and it showed a 10 times lower dark current emission than its precursor gun, even at cathode gradients as high as 60M V/m. In addition, a new photo cathode laser system was installed and will be available for operation in spring 2008. It will allow flat-top temporal laser shapes with 2ps rise/fall time. According to beam dynamics simulations this will further improve the beam quality reported at earlier conferences* and will lead to unprecedented low transverse projected emittance beams at a charge level of 1nC. This contribution will summarize the experimental results from the summer 2008 running period covering transverse projected emittance optimization, thermal emittance from the photocathode, longitudinal phase space and first transverse slice emittance measurements.

* L. Staykov et al., "Measurements of the Projected Normalized Transverse Emittance at PITZ", Proceedings of the FEL 2007, Novosibirsk, Russia, August 2007.


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