1. An Experiment for Electron-Hadron Scattering at the LHC
- Author
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André, K. D. J., Bella, L. Aperio, Armesto, N., Bogacz, S. A., Britzger, D., Brüning, O. S., D'Onofrio, M., Ferreiro, E. G., Fischer, O., Gwenlan, C., Holzer, B. J., Klein, M., Klein, U., Kocak, F., Kostka, P., Kumar, M., Mellado, B., Milhano, J. G., Newman, P. R., Piotrzkowski, K., Polini, A., Ruan, X., Russenschuk, S., Schwanenberger, C., Vilella-Figueras, E., and Yamazaki, Y.
- Subjects
High Energy Physics - Experiment ,High Energy Physics - Phenomenology ,Nuclear Experiment - Abstract
Novel considerations are presented on the physics, apparatus and accelerator designs for a future, luminous, energy frontier electron-hadron ($eh$) scattering experiment at the LHC in the thirties for which key physics topics and their relation to the hadron-hadron HL-LHC physics programme are discussed. Demands are derived set by these physics topics on the design of the LHeC detector, a corresponding update of which is described. Optimisations on the accelerator design, especially the interaction region (IR), are presented. Initial accelerator considerations indicate that a common IR is possible to be built which alternately could serve $eh$ and $hh$ collisions while other experiments would stay on $hh$ in either condition. A forward-backward symmetrised option of the LHeC detector is sketched which would permit extending the LHeC physics programme to also include aspects of hadron-hadron physics. The vision of a joint $eh$ and $hh$ physics experiment is shown to open new prospects for solving fundamental problems of high energy heavy-ion physics including the partonic structure of nuclei and the emergence of hydrodynamics in quantum field theory while the genuine TeV scale DIS physics is of unprecedented rank., Comment: 27 pages, 24 figures, 6 tables; to appear in Eur. Phys. J. C
- Published
- 2022
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