Analysis and Evaluation of the CERN Reference Systems

The work that will be presented has been driven mainly by the Future Circular Collider (FCC) study, a proposed next-generation particle collider with a circumference of 100 km and the aim of reaching collision energies of 100 T e V. The new machine would be located in Swiss and French territories, and it would cover more than 10 times the area of the existing LHC facilities. For this reason, a better integration of the French and Swiss data is needed. The large dimensions of the future machine and the high alignment precision requirements make it necessary to review and analyse the reference and coordinate systems used at CERN, as well as to evaluate the extension of those to cover a much larger area. The current definitions of the CERN reference systems and the transformations between them have been analysed and tested. The proposed modifications and the future work that has to be done to prepare a conceptual design report for the FCC project by 2018 will be presented.