43rd International Conference on High Energy Physics

The LHeC collider as a bridge between major colliders at CERN

Not scheduled

20m

Natal, Brazil

Talk Accelerator: Physics, Performance, and R&D for Future Facilities

Speaker

Nestor Armesto Perez

Description

The Large Hadron electron Collider (LHeC) is the proposal to deliver electron-proton/nucleus collisions at CERN using the LHC beams and a 50 GeV electron beam from an Energy Recovery Linac. While initially foreseen [1] for concurrent electron-hadron and hadron-hadron operation, a standalone electron-hadron operation phase has been proposed [2] in view of the current LHC schedule. Thus, the LHeC becomes a bridge from the HL-LHC to the next flagship at CERN, and one of the possible projects in the 2026 Update of the European Strategy for Particle Physics [3], were the FCC-ee as plan A not feasible.
In this talk we describe the accelerator aspects of the proposal, including design, parameters, performance, feasibility, sustainability and cost. Besides, we discuss how the accelerator technology deployed in the ERL for the LHeC is a major stepping-stone for the performance, cost reduction and training for future colliders, e.g., with the use of the racetrack as an injector for FCC-ee.
[1] P. Agostini et al. (LHeC/FCC-he Study Group), J. Phys. G 48, 110501 (2021), arXiv:2007.14491 [hep-ex].
[2] F. Ahmadova et al., e-Print: 2503.17727 [hep-ex].
[3] The European Strategy for Particle Physics: 2026 Update - Recommendations by the European Strategy Group, https://cds.cern.ch/record/2950671/files/CERN-ESU-2025-002.pdf?version=1.