Author: Berry, S.
Paper Title Page
WEPRI001 Clean Room Integration of the European XFEL Cavity Strings 2474
 
  • S. Berry, O. Napoly, B. Visentin
    CEA/DSM/IRFU, France
  • F. Chastel, A. Clippet, M. Mbeleg, P. Pluvy
    ALSYOM, Argebteuil, France
  • C. Cloué, C. Madec, T. Trublet
    CEA/IRFU, Gif-sur-Yvette, France
 
  The 101 cryomodules of the XFEL cold linac will be integrated at Saclay under the CEA responsability by the industrial operator ALSYOM, at the production rate of cryomodule per week. Each cryomodule includes a string of 8 Niobium superconducting cavities and a BPM-quadripole unit (downstream end). To avoid particle contamination of the RF cavities, the strings are assembled in an ISO4 cleanroom by following strict cleaning and high-vacuum procedures. The major technical challenge of the string integration thus lies in the capacity to realize 25 connections in two weeks while protecting the cavity and coupler RF surfaces and to check their leak-tightness up to 10-10 hPA.l/s. The partial demonstration was made by the CEA team with the first pre-series module XM-3 which achieves a total accelerating voltage of 232 MV preserving the individual performances of cavities. In this paper the status and challenges of the production line is presented, including the quality management, equipment and operator training aspects. The optimisation process toward a faster assembly while preserving or actually decreasing the cavity exposure to contamination sources is also described.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI001  
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THPRO006 Configuration Management in the Series Production of the XFEL Accelerator Modules 2863
 
  • L. Hagge, S. Barbanotti, S. Eucker, A. Frank, K. Jensch, J. Kreutzkamp, D. Käfer, A. Matheisen
    DESY, Hamburg, Germany
  • S. Berry, O. Napoly
    CEA/DSM/IRFU, France
  • C. Cloué, C. Madec, T. Trublet
    CEA/IRFU, Gif-sur-Yvette, France
 
  The series production of the superconducting accelerator modules for the European XFEL requires a production rate of one module per week. For this, assembly procedures have to be well-defined and repeatable, and the punctual supply of parts from the contributing institutes has to be assured. Configuration management (CM) has been introduced for clarification of responsibilities and establishing procedures. CM provides unique identification of parts, part status and location tracking, versioning of documentation, and procedures for change control, auditing and handling non-conformities. The configuration database, which is based on DESY’s Engineering Data Management System, contains the entire information which is necessary for assembling the accelerator modules. The content ranges from work instructions how to build a cryomodule up to individual records of all produced parts. Workflow and reports help tracking production progress and establishing production quality. The presentation gives an overview of the CM solution which is in place for the assembly of the XFEL accelerator modules, and reports experience and lessons learned from series production of the first modules.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO006  
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