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Lilje L.

PaperTitlePage
MO102XFEL: plans for 101 cryomodules6
 
  • L. Lilje
    DESY
 
 The XFEL project [1,2] will use 101 accelerator modules in its superconducting electron linac. A review of the design is being given as well as the most recent test results at the module test stand and at the FLASH [3] accelerator. The fabrication and preparation of the superconducting cavities will be done in industry. The current plans for the acceptance testing of the cavities and the final test of the completed modules will be discussed. 
slides iconSlides(PDF) 
TUP72Piezo-Assisted Blade Tuner: Cold Test Results318
 
  • C. Pagani, A. Bosotti, N. Panzeri, R. Paparella, P. Pierini
    INFN Milano
  • C. Albrecht, R. Lange, L. Lilje
    DESY Hamburg
 
 The new simplified version of the piezo-assisted Blade Tuner has been tested at DESY in the horizontal cryostat CHECHIA in September. The tuner mechanism has been characterized at room temperature and one high gradient cavity of the last production has been recently tuned and equipped with a properly modified helium tank. In view of its possible adoption for the ILC, the cheaper stainless steel version of the tuner has been chosen for the cold tests. In this paper the results are presented and discussed. 
TUP77Recent Experience with Nine-cell Cavity Performance at DESY334
 
  • D. Reschke, L. Lilje
    DESY
 
 The rf performance of the last nine-cell cavity production for TTF/FLASH1 is analysed with respect to maximum gradient, usable gradient and field limitation. 30 cavities have been manufactured at one company from high RRR niobium (RRR > 300) by two vendors. All cavities have been treated by a long (>150 um) horiziontal EP (Electropolishing) and 800 degree C firing. The cavity performance after final short (app. 50 um) EP with or without subsequent ethanol rinse as well as a short chemical etch (~10 um BCP) is compared.