The largest particle accelerators with the highest particle energies, such as the Large Hadron Collider (LHC) at CERN, are used for experimental particle physics for the most basic inquiries into the dynamics and structure of matter, space, and time. These typically entail particle energies of many hundreds of GeV up to several TeV. Besides being of fundamental interest, high energy electrons may be coaxed into emitting extremely bright and coherent beams of high energy photons via synchrotron radiation, which have numerous uses in the study of atomic structure, chemistry, condensed matter physics, biology, and technology. Examples include the ESRF, which has recently been used to extract detailed 3-dimensional images of insects trapped in amber. Thus there is a great demand for electron accelerators of moderate (GeV) energy and high intensity.