The LHeC project
par
Séminaire conjoint avec PHE et le pôle théorie.
The Large Hadron electron Collider LHeC is the proposal of an electron-proton experiment at the LHC. An Energy Recovery Linac ERL will deliver 50 GeV electrons to collide with the HL-LHC hadron and nuclear beams, reaching centre-of-mass energies around 1.2 (0.8) TeV/nucleon and instantaneous luminosities 10^{34(33)} cm^{-2}s^{-1} in $ep(A)$. It can be considered the ultimate upgrade of the LHC and, in view of its present schedule, it may serve as a bridge between the end of the hadron-hadron phase of the HL-LHC and the next major collider at CERN. I will review the different aspects of the project: accelerator, detector, and its comprehensive physics program which comprises precision QCD and EW, Higgs, top and BSM physics. Finally, I will review the present status and plans within the 2026 Update of the European Strategy for Particle Physics.