The Large Hadron–Electron Collider at the HL-LHC

P. Agostini, H. Aksakal, S. Alekhin, P. P. Allport, N. Andari, K. D.J. Andre, D. Angal-Kalinin, S. Antusch, L. Aperio Bella, L. Apolinario, R. Apsimon, A. Apyan, G. Arduini, V. Ari, A. Armbruster, N. Armesto, B. Auchmann, K. Aulenbacher, G. Azuelos, S. BackovicI. Bailey, S. Bailey, F. Balli, S. Behera, O. Behnke, I. Ben-Zvi, M. Benedikt, J. Bernauer, S. Bertolucci, S. S. Biswal, J. Blümlein, A. Bogacz, M. Bonvini, M. Boonekamp, F. Bordry, G. R. Boroun, L. Bottura, S. Bousson, A. O. Bouzas, C. Bracco, J. Bracinik, D. Britzger*, S. J. Brodsky, C. Bruni, O. Brüning*, H. Burkhardt, O. Cakir, R. Calaga, A. Caldwell, A. Calıskan, S. Camarda, N. C. Catalan-Lasheras, K. Cassou, J. Cepila, V. Cetinkaya, V. Chetvertkova, B. Cole, B. Coleppa, A. Cooper-Sarkar, E. Cormier, A. S. Cornell, R. Corsini, E. Cruz-Alaniz, J. Currie, D. Curtin, M. D’Onofrio, J. Dainton, E. Daly, A. Das, S. P. Das, L. Dassa, J. de Blas, L. Delle Rose, H. Denizli, K. S. Deshpande, D. Douglas, L. Duarte, K. Dupraz, S. Dutta, A. V. Efremov, R. Eichhorn, K. J. Eskola, E. G. Ferreiro, O. Fischer, O. Flores-Sánchez, S. Forte, A. Gaddi, J. Gao, T. Gehrmann, A. Gehrmann-De Ridder, F. Gerigk, A. Gilbert, F. Giuli, A. Glazov, N. Glover, R. M. Godbole, B. Goddard, V. Gonçalves, G. A. Gonzalez-Sprinberg, A. Goyal, J. Grames, E. Granados, A. Grassellino, Y. O. Gunaydin, Y. C. Guo, V. Guzey, C. Gwenlan, A. Hammad, C. C. Han, L. Harland-Lang, F. Haug, F. Hautmann, D. Hayden, J. Hessler, I. Helenius, J. Henry, J. Hernandez-Sanchez, H. Hesari, T. J. Hobbs, N. Hod, G. H. Hoffstaetter, B. Holzer, C. G. Honorato, B. Hounsell, N. Hu, F. Hug, A. Huss, A. Hutton, R. Islam, S. Iwamoto, S. Jana, M. Jansova, E. Jensen, T. Jones, J. M. Jowett, W. Kaabi, M. Kado, D. A. Kalinin, H. Karadeniz, S. Kawaguchi, U. Kaya, R. A. Khalek, H. Khanpour, A. Kilic, M. Klein*, U. Klein, S. Kluth, M. Köksal, F. Kocak, M. Korostelev, P. Kostka, M. Krelina, J. Kretzschmar, S. Kuday, G. Kulipanov, M. Kumar, M. Kuze, T. Lappi, F. Larios, A. Latina, P. Laycock, G. Lei, E. Levitchev, S. Levonian, A. Levy, R. Li, X. Li, H. Liang, V. Litvinenko, M. Liu, T. Liu, W. Liu, Y. Liu, S. Liuti, E. Lobodzinska, D. Longuevergne, X. Luo, W. Ma, M. Machado, S. Mandal, H. Mäntysaari, F. Marhauser, C. Marquet, A. Martens, R. Martin, S. Marzani, J. McFayden, P. McIntosh, B. Mellado, F. Meot, A. Milanese, J. G. Milhano, B. Militsyn, M. Mitra, S. Moch, M. Mohammadi Najafabadi, S. Mondal, S. Moretti, T. Morgan, A. Morreale, P. Nadolsky, F. Navarra, Z. Nergiz, P. Newman, J. Niehues, E. A. Nissen, M. Nowakowski, N. Okada, G. Olivier, F. Olness, G. Olry, J. A. Osborne, A. Ozansoy, R. Pan, B. Parker, M. Patra, H. Paukkunen, Y. Peinaud, D. Pellegrini, G. Perez-Segurana, D. Perini, L. Perrot, N. Pietralla, E. Pilicer, B. Pire, J. Pires, R. Placakyte, M. Poelker, R. Polifka, A. Polini, P. Poulose, G. Pownall, Y. A. Pupkov, F. S. Queiroz, K. Rabbertz, V. Radescu, R. Rahaman, S. K. Rai, N. Raicevic, P. Ratoff, A. Rashed, D. Raut, S. Raychaudhuri, J. Repond, A. H. Rezaeian, R. Rimmer, L. Rinolfi, J. Rojo, A. Rosado, X. Ruan, S. Russenschuck, M. Sahin, C. A. Salgado, O. A. Sampayo, K. Satendra, N. Satyanarayan, B. Schenke, K. Schirm, H. Schopper, M. Schott, D. Schulte, C. Schwanenberger, T. Sekine, A. Senol, A. Seryi, S. Setiniyaz, L. Shang, X. Shen, N. Shipman, N. Sinha, W. Slominski, S. Smith, C. Solans, M. Song, H. Spiesberger, J. Stanyard, A. Starostenko, A. Stasto, A. Stocchi, M. Strikman, M. J. Stuart, S. Sultansoy, H. Sun, M. Sutton, L. Szymanowski, I. Tapan, D. Tapia-Takaki, M. Tanaka, Y. Tang, A. T. Tasci, A. T. Ten-Kate, P. Thonet, R. Tomas-Garcia, D. Tommasini, D. Trbojevic, M. Trott, I. Tsurin, A. Tudora, I. Turk Cakir, K. Tywoniuk, C. Vallerand, A. Valloni, D. Verney, E. Vilella, D. Walker, S. Wallon, B. Wang, K. Wang, K. Wang, X. Wang, Z. S. Wang, H. Wei, C. Welsch, G. Willering, P. H. Williams, D. Wollmann, C. Xiaohao, T. Xu, C. E. Yaguna, Y. Yamaguchi, Y. Yamazaki, H. Yang, A. Yilmaz, P. Yock, C. X. Yue, S. G. Zadeh, O. Zenaiev, C. Zhang, J. Zhang, R. Zhang, Z. Zhang, G. Zhu, S. Zhu, F. Zimmermann, F. Zomer, J. Zurita, P. Zurita

*Corresponding author for this work

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208 Scopus citations

Abstract

The Large Hadron–Electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting energy-recovery technology, it collides a novel, intense electron beam with a proton or ion beam from the High-Luminosity Large Hadron Collider (HL-LHC). The accelerator and interaction region are designed for concurrent electron–proton and proton–proton operations. This report represents an update to the LHeC’s conceptual design report (CDR), published in 2012. It comprises new results on the parton structure of the proton and heavier nuclei, QCD dynamics, and electroweak and top-quark physics. It is shown how the LHeC will open a new chapter of nuclear particle physics by extending the accessible kinematic range of lepton–nucleus scattering by several orders of magnitude. Due to its enhanced luminosity and large energy and the cleanliness of the final hadronic states, the LHeC has a strong Higgs physics programme and its own discovery potential for new physics. Building on the 2012 CDR, this report contains a detailed updated design for the energy-recovery electron linac (ERL), including a new lattice, magnet and superconducting radio-frequency technology, and further components. Challenges of energy recovery are described, and the lower-energy, high-current, three-turn ERL facility, PERLE at Orsay, is presented, which uses the LHeC characteristics serving as a development facility for the design and operation of the LHeC. An updated detector design is presented corresponding to the acceptance, resolution, and calibration goals that arise from the Higgs and parton-density-function physics programmes. This paper also presents novel results for the Future Circular Collider in electron–hadron (FCC-eh) mode, which utilises the same ERL technology to further extend the reach of DIS to even higher centre-of-mass energies.

Original languageEnglish
Article number110501
JournalJournal of Physics G: Nuclear and Particle Physics
Volume48
Issue number11
DOIs
StatePublished - Nov 2021

Funding

FundersFunder number
THOR
H2020 Marie Skłodowska-Curie Actions
European Commission
Japan Society for the Promotion of Science19K03886
Unidad de Exce-lencia María de MaetzuMDM-2016-0692
Min-isterio de Ciencia e Innovación of SpainFPA2017-83814-P
European Regional Development FundCA 15213
Horizon 2020 Framework Programme824093, 823947
Deutsche ForschungsgemeinschaftINST 39/963-1 FUGG
Xunta de GaliciaED431C 2017/07

    Keywords

    • Accelerator physics
    • Beyond Standard Model
    • Deep-inelastic scattering
    • Energy-recovery-linac
    • Higgs
    • High-lumi LHC
    • Nuclear physics
    • QCD
    • Top and electroweak physics

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