| Paper |
Title |
Page |
| WEPD012 |
The LHC Continuous Cryostat Interconnections: the Organization of a Logistically Complex Worksite Requiring Strict Quality Standards and High Output
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2428 |
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- P. Fessia, F. F. Bertinelli, D. Bozzini, P. Cruikshank, A. Jacquemod, W. Maan, A. Musso, L. Oberli, A. Poncet, S. Russenschuck, F. Savary, M. Struik, Z. Sulek, J.-P. G. Tock, D. Tommasini, C. Vollinger
CERN, Geneva
- A. Grimaud
ALL43, Saint-Genis-Pouilly
- A. Kotarba
HNINP, Kraków
- L. Vaudaux
IEG, St-Genis-Pouilly
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The interconnections of the Large Hadron Collider (LHC) continuous cryostat have been completed in autumn 2007: 1695 magnet to magnet interconnections and 224 interconnections between the continuous cryostat and the cryogenic distribution line have been closed along the 27km of the LHC. The high productivity demanded, the complexity of the interconnection sequence, the strict quality standards have required an ad hoc organization in order to steer and coordinate the activities on a worksite that was spread along the whole accelerator ring. The optimization of the intricate sequence of construction and test phases carried out by CERN staff, CERN collaborating institutes and contractors have led to the necessity of a common approach and of a very effective information flow. Specialized CERN teams have been created to deal with non standard operation to smooth the work sequences of the main assembly teams. In this paper, after having recalled the main technical challenges, we review the organizational choices that have been taken, their impact on quality and productivity and we briefly analyze the development of the worksite in term of allocated resources and production.
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| WEPD026 |
The Special LHC Interconnections: Technologies, Organization and Quality Control
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2464 |
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- J.-P. G. Tock, F. F. Bertinelli, D. Bozzini, P. Cruikshank, O. Desebe, M. F. Felip-Hernando, C. Garion, A. Jacquemod, N. Kos, F. Laurent, A. Poncet, S. Russenschuck, I. Slits, L. R. Williams
CERN, Geneva
- L. Hajduk
HNINP, Krakow
- L. Vaudaux
IEG, St-Genis-Pouilly
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In addition to the standard interconnections of the continuous cryostat of the Large Hadron Collider (LHC), there exists a variety of special ones related to specific components and assemblies, such as cryomagnets of the insertion regions, electrical feedboxes and superconducting links. Though they are less numerous, their specificities created many additional interconnection types, requiring a larger variety of assembly operations and quality control techniques, keeping very high standards of quality. Considerable flexibility and adaptability from all the teams involved (CERN staff, collaborating institutes, contractors) were the key points to ensure the success of this task. This paper first describes the special interconnections and presents the employed technologies which are adapted from the standard work. Then, the organization adopted for this non-repetitive work is described. Examples of non-conformities that were resolved are also discussed. Figures of merit in terms of quality and productivity are given and compared with standard interconnections work.
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