  For the first time, physicists are in the position to precisely study a fully
relativistic quantum field theory: Quantum ChromoDynamics (QCD). QCD is a
central element of the Standard Model and provides the theoretical framework
for understanding the strong interaction. This demands a powerful new electron
microscope to probe the virtual particles of QCD. Ab initio calculations using
lattice gauge theory on the world's most powerful supercomputers are essential
for comparison with the data. The new accelerator and computing techniques
demand aggressive development of challenging, innovative technologies.
