Klemz, G.

Paper	Title	Page
THAAU02	Initial Commissioning Experience with the Superconducting RF Photoinjector at ELBE	467
	J. Teichert, A. Arnold, H. Buettig, D. Janssen, M. Justus, U. Lehnert, P. Michel, P. Murcek, A. Schamlott, Ch. Schneider, R. Schurig, F. Staufenbiel, R. Xiang FZD, Dresden T. Kamps, J. Rudolph, M. Schenk BESSY GmbH, Berlin G. Klemz, I. Will MBI, Berlin
	A radio frequency photo injector with a superconducting acceleration cavity (SRF gun) for installation at the Radiation Source ELBE was developed within a collaboration of BESSY, DESY, FZD, and MBI. The aim of the project is to improve the electron beam quality and to extend the parameter range of the ELBE accelerator. Especially the bunch charge will be increased up to 1 nC and the transverse emittance will be reduced to 1 - 3 mm mrad. At present, the thermionic injector at ELBE delivers bunches of 77 pC at about 8 mm mrad. Furthermore, the SRF gun together with its diagnostic beam line is an excellent test bench for extended studies and improvements of this new and promising injector type. The gun cryostat, the electron diagnostic beamline, and the driver laser with optical beamline were installed in summer and fall 2007. In November the first beam was produced. It will be reported on the experience gained at the first phase of commissioning. Results of rf and beam parameter measurements with Cu and Cs2Te photo cathodes will be presented.
	Slides
THAAU05	Latest Results at the Upgraded PITZ Facility	481
	C. H. Boulware, G. Asova, J. W. Baehr, H.-J. Grabosch, L. Hakobyan, M. Hänel, Ye. Ivanisenko, S. Khodyachykh, M. K. Khojoyan, S. A. Korepanov, M. Krasilnikov, B. Petrosyan, S. Rimjaem, T. A. Scholz, A. Shapovalov, R. Spesyvtsev, L. Staykov, F. Stephan DESY Zeuthen, Zeuthen W. Ackermann, E. Arevalo TEMF, TU Darmstadt, Darmstadt K. Floettmann, S. Lederer, D. Reschke DESY, Hamburg T. Garvey PSI, Villigen G. Klemz, I. Will MBI, Berlin P. M. Michelato, L. Monaco, C. Pagani, D. Sertore INFN/LASA, Segrate (MI) R. Richter BESSY GmbH, Berlin J. Roensch Uni HH, Hamburg K. Rosbach Humboldt University Berlin, Institut für Physik, Berlin
	The Photo Injector Test facility at DESY, Zeuthen site, (PITZ) develops and optimizes electron sources for high-power, short-wavelength FELs such as FLASH and the European XFEL. PITZ has now restarted operation after a very significant upgrade. A new laser system has been installed which, when fully commissioned, is expected to deliver 20 ps-long pulses with rise and fall times of 2 ps. Also, a new 1.5-cell L-band gun with improved cooling channel design has been installed. A new dry-ice cleaning method was employed during this gun’s preparation, and conditioning results from this gun show significantly decreased dark current compared with the summer 2007 run. We describe the new stage of the facility, report the complete conditioning results from the new electron gun, give an overview of the experimental results from the 2008 run period, and present a description of the additional planned upgrades toward the full operating design of the facility.
	Slides