Impact of Modularity and Redundancy in Optimising the Reliability of Power Systems that Include a Large Number of Power Converters Pittet S CERN Siemaszko D CERN 2012 CERN is working on a new particle accelerator that will require a very large number of power converters. In that view, the reliability of the whole powering will be a major issue. The use of a redundancy and modularity may help increasing the overall machine availability. However, the reliability of the redundancy system must be high enough to add a significant improvement when compared to simple module systems. This paper suggests a comparative study of several modular and redundant configurations for optimising power converters reliability and draws some conclusion from what has been achieved in the LHC previous experience. PREPRINT

Phys. Procedia Phys. Procedia AC Loss in the Superconducting Cables of the CERN Fast Cycled Magnet Prototype Bottura L CERN Nijhuis A Twente U., Enschede Zhou C Twente U., Enschede Liu B Twente U., Enschede Miyoshi Y Twente U., Enschede Krooshoop H J G Twente U., Enschede Richter D CERN Borgnolutti F CERN 2012 36 1087 1092 Fast Cycled Superconducting Magnets (FCM's) are an option of interest for the long-term consolidation and upgrade plan of the LHC accelerator complex. The economical advantage of FCM's in the range of 2 T bore field, continuously cycled at 0.5 Hz repetition rate, depends critically on the AC loss property of strand and cable. In this paper we report the results of the AC loss measurements that we have performed both on strands and cables manufactured for the CERN FCM prototype program. research-article