The 2 mrad crossing-angle ILC interaction region and extraction line
  A complete optics design for the 2mrad crossing angle interaction region and extraction line was presented at Snowmass 2005. Since this time, the design task force has been working on developing and improving the performance of the extraction line. The work has focused on optimising the final doublet parameters and on reducing the power losses resulting from the disrupted beam transport. In this paper, the most recent status of the 2mrad layout and the corresponding performance are presented. 
R. Appleby (Cockcroft Inst.-UK), D. Angal-Kalinin (CCLRC-UK), P.   Bambade, O. Dadoun (LAL-France), B. Parker (BNL-USA), L. ...