There are two main design proposals for the future linear collider.
Nature of problem: The forthcoming experiments at the high energy electron-positron collider LEP2 will be mainly concerned with WW physics and Higgs search.
In Europe, LEP, at CERN near Geneva, is the highest-energy electron-positron collider in the world.
The high energy makes the Tevatron the only collider capable of directly producing and thereby measuring the properties of the massive top quark.
collider experiments, addressing a broad range of issues in modern particle physics.