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Mess, K.H.

Paper Title Page
WEPLS083 Consolidation of the 45-year-old CERN PS Main Magnet System 2571
 
  • Th. Zickler, D. Bodart, W. Kalbreier, K.H. Mess, A. Newborough
    CERN, Geneva
 
  After a major coil insulation breakdown on two of the 45-year-old CERN PS main magnets in 2003, an extensive magnet consolidation program has been launched. This article reviews the analysis of the magnet state before the repair and the applied major improvements. An overview is given of the production of the new components, the actual refurbishment and the commissioning of the main magnet system after 18 months shut down.  
WEPLS098 Experience with the Quality Assurance of the Superconducting Electrical Circuits of the LHC Machine 2604
 
  • D. Bozzini, V. Chareyre, K.H. Mess, S. Russenschuck
    CERN, Geneva
  • A. Kotarba, S. Olek
    HNINP, Kraków
 
  The coherence between the powering reference database and the Electrical Quality Assurance (ELQA) is guaranteed on the procedural level. However, a challenge remains the coherence between the database, the magnet test and assembly procedures, and the connection of all superconducting circuits of the LHC. In this paper, the methods, tooling, and procedures for the ELQA during the assembly phase of the LHC will be presented in view of the practical experience gained in the LHC tunnel. The parameters measured at ambient temperature such as the dielectric insulation and the impedance transfer function of assembled circuits will be discussed. Some examples of detected polarity errors and the treatment of non-conformities will be presented.