An electron-proton collider in the TeV range

In ep colliding beam measurements, approximate equality of electron and quark energies is desirable for good detection efficiency. In the TeV CM energy regime, synchrotron radiation makes this requirement very expensive to meet using a storage ring for the electrons. Here the authors review a scheme that ameliorates this problem by using a superconducting linac for electron acceleration. Parameter lists show that such an approach may be practical for the next generation ep colliding beyond HERA. An example of a 300 GeV electron beam colliding with the HERA p ring is shown in some detail. Examples up to √s = 12 TeV are given