Towards a new LHC interaction region design for a luminosity upgrade

Strait, J.; Lamm, M. J.; Limon, P.; Mokhov, N.; Sen, T.; Zlobin, A.V.; Brüning, Oliver; Ostojić, R.; Rossi, L.; Ruggiero, F.; Taylor, T. Matthew; Kate, H. Ten; Devred, A.; Gupta, R.; Harrison, M.; Peggs, S.; Pilat, F.; Caspi, S.; Gourlay, S.A.; Sabbi, G.

doi:10.1109/pac.2003.1288835

Cited by 30 publications

(24 citation statements)

References 3 publications

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“…In 2002-2003 common work between US labs and CERN indicated the route for upgrade [10]. Right after the LARP (LHC Accelerator Research Program) was set up and approved by DOE [11] and become a ten-year program with a financing from 2008 of about 12 M$/year (in USA accounting).…”

Section: The International Collaborationmentioning

confidence: 99%

Introduction to the HL-LHC Project

Rossi¹,

Brüning²

2015

The High Luminosity Large Hadron Collider

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The Large Hadron Collider (LHC) is one of largest scientific instruments ever built. It has been exploring the new energy frontier since 2010, gathering a global user community of 7,000 scientists. To extend its discovery potential, the LHC will need a major upgrade in the 2020s to increase its luminosity (rate of collisions) by a factor of five beyond its design value and the integrated luminosity by a factor of ten. As a highly complex and optimized machine, such an upgrade of the LHC must be carefully studied and requires about ten years to implement. The novel machine configuration, called High Luminosity LHC (HL-LHC), will rely on a number of key innovative technologies, representing exceptional technological challenges, such as cutting-edge 11-12 tesla superconducting magnets, very compact superconducting cavities for beam rotation with ultra-precise phase control, new technology for beam collimation and 300-meter-long high-power superconducting links with negligible energy dissipation.HL-LHC federates efforts and R&D of a large community in Europe, in the US and in Japan, which will facilitate the implementation of the construction phase as a global project. Context and ObjectivesThe Large Hadron Collider (LHC) was successfully commissioned in March 2010 for proton-proton collisions with a 7 TeV center-of-mass energy and has delivered 8 TeV center-of-mass proton collisions since April 2012. The LHC is pushing the limits of human knowledge, enabling physicists to go beyond the Standard Model: the enigmatic Higgs boson, mysterious dark matter and the world of supersymmetry are just three of the long-awaited mysteries that the LHC might unveil. The announcement given by CERN on 4 July 2012 about the discovery of new * The project is partially supported by the EC as FP7 HiLumi LHC Design Study under grant no. 284404. In addition to the FP7-Hilumi LHC consortium, the Project relies on the special contributions by: USA (LARP), Japan (KEK), France (CEA), Italy (INFN-Milano and Genova) Rossi and O. Brüning boson at about 125 GeV, the long awaited Higgs particle, is hopefully the first fundamental discovery of a series that LHC can deliver. Thanks to the LHC, Europe has decisively regained world leadership in High Energy Physics, a key sector of knowledge and technology. The LHC can act as catalyst for a global effort unrivalled by other branches of science: out of the 10,000 CERN users, more than 7,000 are scientists and engineers using the LHC, half of which are from countries outside the EU.The LHC baseline programme till 2025 is schematically shown in Fig. 1. After entering in the near-to-nominal energy regime of 13 TeV center-of-mass energy in 2015, (hoping to reach the 14 TeV in the subsequent year) it is expected that the LHC will reach the design peak luminosity . Then in the period 2015-2022 LHC will hopefully increase the peak luminosity: indeed margins have been taken in the design to allow, in principle, to reach about two times the nominal design performance. The baseline programme for the next ...

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Section: The International Collaborationmentioning

confidence: 99%

Introduction to the HL-LHC Project

Rossi¹,

Brüning²

2015

The High Luminosity Large Hadron Collider

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“…The shell-bladder design has been so successful that in 2008 it was selected by the LARP collaboration as the baseline structure for the successive phase, the manufacturing of a long -3.6 m -magnet. In these two phases the coil apertures were 90 mm, based on a early evaluation of LARP and CERN 21) that later proved to be too small for the needs of the upgrade. The results of the 3.6 m long quadrupole can be found in Ref.…”

Section: Low-beta Quadrupoles For Irsmentioning

confidence: 99%

Superconducting Magnet Development for the LHC Upgrades

Rossi

2012

TEION KOGAKU

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LHC is now delivering proton and heavy ion collisions at the highest energy. Upgrading the LHC beyond its design performance is a long term program that started during the LHC construction, with some fundamental R&D programs.The upgrade program is based on a vigorous superconductor and magnet R&D, aimed at increasing the field in Review ArticleSuperconducting Magnet Development for the LHC Upgrades Lucio ROSSI * Synopsis: LHC is now delivering proton and heavy ion collisions at the highest energy. Upgrading the LHC beyond its design performance is a long term program that started during the LHC construction, with some fundamental R&D programs. The upgrade program is based on a vigorous superconductor and magnet R&D, aimed at increasing the field in accelerator magnets from 8 T to 12 T for the luminosity upgrade, with the scope of increasing the collider luminosity by a factor 5 to 10 from 2022. The upgrade program might continue with the LHC energy upgrade, which would require magnets producing field in the range of 16-20 T. The results obtained so far and the future challenges are discussed together with the possible plan to reach the goals.

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“…The corresponding magnet requirements are shown in Table 6. Other alternative IR layouts are discussed in [18]. Table 6: Tentative magnet parameters for a triplet layout with separated beams inside the triplet magnets.…”

Section: Triplet Aperture Requirements: Baseline Schemementioning

confidence: 99%

LHC accelerator R&D and upgrade scenarios

Ruggiero

2004

Eur Phys J C

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I report the results of a CERN task force set up to investigate a possible staged upgrade of the LHC and of its injectors, with a view to increasing the machine luminosity by an order of magnitude from the nominal 10 34 cm −2 s −1 to 10 35 cm −2 s −1 . Scenarios for an LHC energy upgrade by nearly a factor two have also been considered. An interesting outcome of these discussions has been a novel approach to the optimization of the collider performance, compatible with the beam-beam limit for high intensity proton bunches or long 'super-bunches'. I also sketch a new design of the interaction regions, including an alternative beam crossing scheme. To put things in perspective, I first address LHC commissioning scenarios and challenges associated with machine protection and electron cloud effects. Finally I discuss further studies required for an LHC performance upgrade and outline an R&D programme.

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Towards a new LHC interaction region design for a luminosity upgrade

Cited by 30 publications

References 3 publications

Introduction to the HL-LHC Project

Introduction to the HL-LHC Project

Superconducting Magnet Development for the LHC Upgrades

LHC accelerator R&D and upgrade scenarios

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