Summy of the working groupI of the care HHH LUMI-2005 workshop

The working group I of the LUMI-2005 workshop was asked to put together a catalogue of basic design options for the IR solutions for an LHC-upgrade. The goal of the working group was to discuss the different solutions with respect to the maximum beta-functions inside the first focusing quadrupole magnets and the resulting required quadrupole apertures the chromatic aberrations on the one hand and the implications for the magnet technology on the other hand. Such a comparison requires a wide range of input data ranging from the expected loss patterns at the magnetic elements and the resulting peak and average heat deposition to the obtainable peak magnetic field and quench limits for different magnet design options and the correct ability of the chromatic aberrations for a given optics design. Given the wide spectrum of relevant input data the working group could not yet prepare a final ranking of the various design options. Rather the working group succeeded in fixing some of the key boundary conditions in order to allow an objective comparison of the different design options and establishing a central repository for the layout options that can be accessed for future studies.