EUROTeV-Memo-2007-004 Extraction line optics in the improved 2mrad alternative ILC crossing angle layout

In this memo we present the optical parameters of the new extraction line for the 2mrad crossing angle layout of the International Linear Collider (ILC). The revised design, separately optimised for both the 500 GeV and 1 TeV machine, directly addresses the beam transport and magnet feasibility issues of the previous designs. Acceptable beam transport capabilities are achieved for all machine energies and beam parameter sets