Turkish Journal of Physics, cilt.48, sa.5, ss.142-152, 2024 (ESCI)
Construction of the ERLC (twin LC) collider tangential to LHC will allow investigating ep collisions at essentially higher center-of-mass energies than ERL-50 and LHC based ep collider. Luminosity estimations show that values well exceeding $10^{34} cm^{−2}s^{−1}$ can be achieved for ERLC and HL-LHC based ep colliders. Certainly, proposed ep colliders have great potential for clarifying QCD basics and new physics search in addition to providing precise PDFs for adequate interpretation of the LHC experimental data. Another alternative to the ERL-50 is to construct an e-ring with the same energy and length. In this case, luminosity of order $10^{34} cm^{−2}s^{−1}$ can be reached. The advantage of this option is that the μ -ring can be installed instead of the e-ring as a next stage, which will allow to reach a much higher center of mass energy. Key words: LHC, LHeC, ERLC, e-ring, energy frontier ep colliders, luminosity