Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 82, Issue 1, Pages -Publisher
SPRINGER
DOI: 10.1140/epjc/s10052-021-09967-z
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Funding
- Xunta de Galicia
- Maria de Maeztu Units of Excellence program [MDM2016-0692]
- Spanish Research State Agency [FPA2017-83814-P]
- Fundacao para a Ci <^>encia e a Tecnologia (Portugal) [CERN/FISPAR/0024/2019]
- South African Department of Science and Innovation
- National Research Foun-dation
- UK Science and Technology Facilities Council
- U.S. DOE [DE-AC05-06OR23177, DE-SC0012704]
- European Union ERDF
- European Research Council [ERC-2018ADG-835105 YoctoLHC]
- European Union [824093]
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This paper presents novel considerations on the physics, apparatus and accelerator designs for a future luminous, energy frontier electron-hadron scattering experiment at the LHC in the thirties. It discusses the key physics topics and their relation to the hadron-hadron HL-LHC physics programme. The paper derives demands on the design of the LHeC detector set by these physics topics and describes a corresponding update. It also presents optimizations on the accelerator design, particularly the interaction region (IR). Additionally, the paper sketches a forward-backward symmetrized option of the LHeC detector that would allow extending the LHeC physics programme to include aspects of hadron-hadron physics.
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.
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