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The Interconnections of the LHC Cryomagnets at CERN: Strategy Applied and First Results of the Industrialization Process

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6 Author(s)
Tock, J.P. ; Accel. Technol. Dept. of CERN, Eur. Lab. for Particle Phys., Geneva ; Bertinelli, F. ; Fessia, P. ; Jacquemod, A.
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The final interconnections of the LHC superconducting magnets in the underground tunnel are performed by a contractor on a result-oriented basis. A consortium of firms was awarded the contract after competitive tendering based on a technical and commercial specification. The implementation of the specific technologies and tooling developed and qualified by CERN has required an important effort to transfer the know-how and implement the follow-up of the contractor. This paper summarizes the start-up phase and the difficulties encountered. The organization and management tools put in place during the ramping-up phase are presented. In addition to contractual adaptations of the workforce, several configuration changes to the workflows were necessary to reach production rates compatible with the overall schedule and with the different constraints: availability of magnets, co-activities with magnets transport and alignment, handling of non-conformities, etc. Also the QA procedures underwent many changes to reach the high level of quality mandatory to ensure the LHC performance. The specificities of this worksite are underlined and first figures of merit of the learning process are presented.

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Applied Superconductivity, IEEE Transactions on  (Volume:18 ,  Issue: 2 )