Author: Barbanotti, S.
Paper Title Page
MOPB015 Accelerator Module Repair for the European XFEL Installation 82
 
  • E. Vogel, S. Barbanotti, F. Hoffmann, K. Jensch, D. Kostin, L. Lilje, W.-D. Möller, M. Schmökel, H. Weise
    DESY, Hamburg, Germany
  • S. Berry, O. Napoly
    CEA/DSM/IRFU, France
  • M. Sienkiewicz, J. Świerbleski, M. Wiencek
    IFJ-PAN, Kraków, Poland
 
  Repair actions of different extent have been performed at 61 modules of the 100 accelerating series modules for the European XFEL to qualify them for the tunnel installation. Four modules could not be repaired in time. CEA Saclay managed to perform three major repairs in parallel to the series module integration, the residual repair actions took place at DESY Hamburg. In this paper we will give an overview on the various technical problems which required being fixed before the tunnel installation and on the repair actions performed.  
poster icon Poster MOPB015 [9.354 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2017-MOPB015  
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MOPB076 Analysis of the Production, Installation and Commissioning of the European-XFEL Frequency Tuners 235
 
  • R. Paparella, A. Bosotti, D. Sertore
    INFN/LASA, Segrate (MI), Italy
  • C. Albrecht, S. Barbanotti, A. Bellandi, J. Branlard, K. Jensch, L. Lilje
    DESY, Hamburg, Germany
  • C. Cloué, T. Trublet
    CEA/IRFU, Gif-sur-Yvette, France
  • C. Madec
    CEA, Gif-sur-Yvette, France
 
  In the European-XFEL superconducting linac, mechanical frequency tuners equipped with stepper motors and piezoelectric actuators provide cold tuning of each of the 768 1.3 GHz cavities. More than 820 complete tuning systems were fabricated and pre-assembled in industry, tested at several stages before and after assembly and successfully commissioned during cryo-module cold tests at AMTF (DESY). Quality control strategy adopted to preserve the well-assessed tuner reliability through such a large-scale industrial production is critically reviewed and the lessons learned are presented in this paper. The statistical analysis of the large set of data acquired up to the recent commissioning of the entire linac is then summarized.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2017-MOPB076  
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