As part of the continuing work on the design of a linear collider, SLAC in the United States and KEK in Japan are finalizing a formal agreement on the development of a common design for a 500 GeV (upgradable to 1 or 1.5 TeV) linear electron collider.

The following links describe the current parameters of the International model.  Also on the web are historical and local working models from each laboratory.  The local models are the basis of the continuing detailed design work and cost model development pursued at each laboratory.