Turkish Journal of Physics, cilt.22, sa.7, ss.667-673, 1998 (SCI-Expanded)
Limitations on incoherent and beam-beam tune shift values are calculated by using gaussian beam distribution for linac-ring type ep colliders. The advantage of this machine is achievement of multi TeV center of mass energies in lepton-hadron interactions at sufficiently high luminosities. Tune shift puts a limit on the number of electrons per effective area for the stability of proton beam and, therefore, gives an upper bound for the luminosity.