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Chapter 9: Cryogenics for the HL-LHC
/ Claudet, Serge (CERN) ; Ferlin, Gerard (CERN) ; Monneret, Emmanuel (CERN) ; Perin, Antonio (CERN) ; Pirotte, Olivier (CERN) ; Sisti, M (CERN) ; Van Weelderen, Rob (CERN)
The upgrade of the cryogenics for the HL-LHC will consist of the following:
- The design and installation of two new cryogenic plants at P1 and P5 for high luminosity insertions. This upgrade will be based on a new sectorization scheme aimed at separating the cooling of the magnets in these insertion regions from the arc magnets and considering the newt feedboxes and superconducting links located in underground infrastructures.
- The design and installation of a new cryogenic distribution lines (QXL) at P1 and P5 in the LHC tunnel and in a new underground service galleries.
- The upgrade of the existing cryogenic plant (QSRA and QURA) cooling the LHC sector 3-4 located at P4.
- The cryogenic design support for superconducting devices, such as magnets, crab cavities, superconducting links, and the hollow electron lenses.
Some other options such as new cryogenic circuits at P7 for the HTS links and displaced current feedboxes or a new cryoplant in P4 have been discarded..
2020 - 10 p.
- Published in : 10.23731/CYRM-2020-0010.189
Fulltext: PDF;
In : High-Luminosity Large Hadron Collider (HL-LHC): Technical design report, pp.189-198
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Chapter 15: Integration, (de-)installation and alignment
/ Fessia, Paolo (CERN) ; Mainaud Durand, Helene (CERN)
The HL-LHC will require modifying the machine and infrastructure installations of the LHC in several points along the Accelerator Ring, in particular: P1, P2, P4, P5, P6, P7 and P8.
Part of the modifications and improvement in P2, P4, P7 and P8 shall be completed during Long Shutdown 2 (LS2) and be operational for LHC Run 3, while the largest part of the interventions will take place in Long Shutdown 3 (LS3) and they will affect primarily P1, P4, P5, P6 and P7. The activities required point by point will be therefore listed and analysed here below..
2020 - 15 p.
- Published in : 10.23731/CYRM-2020-0010.269
Fulltext: PDF;
In : High-Luminosity Large Hadron Collider (HL-LHC): Technical design report, pp.269-283
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Upgrade of the CERN Superconducting Magnet Test Facility
/ Bajko, Marta (CERN) ; Benda, Vladislav (CERN) ; Bottura, Luca (CERN) ; Broche, Alexandre Joel (CERN) ; Formenti, Fabio (CERN) ; Giannelli, Sebastiano (CERN) ; Giloux, Christian (CERN) ; Kosmicki, Antoine (CERN) ; Goncalves Perez, Consuelo (CERN) ; Perez-Duenas, E (CERN) et al.
Abstract:
The superconducting magnet test facility at CERN has hosted the series test of the majority of the LHC magnets. The facility has evolved, and is presently divided in two main areas: a vertical test facility, equipped with three vertical cryostats, and a horizontal test facility, with ten feedboxes for test of cryostated magnets in horizontal position. [...]
2017 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 27 (2017) 9500307
In : Applied Superconductivity Conference, Denver, CO, USA, 4 - 9 Sep 2016, pp.9500307
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Distribution Feedbox for the Superconducting Link (SCLink) and Magnets of HL-LHC
/ Bailey, W (Southampton U.) ; Pelegrin, J (Southampton U.) ; Falorio, I (Southampton U. ; CERN) ; Leclercq, Y (CERN) ; Betemps, R (CERN) ; Parma, V (CERN) ; Ballarino, A (CERN) ; Yang, Y (Southampton U.)
The High Luminosity LHC (HL-LHC) project aims at upgrading the LHC collider to increase its luminosity by about a factor of five. The electrical connection between the magnets in the LHC tunnel and the power converters in a new transverse tunnel will be supplied by a superconducting line (SCLink), consisting of ten MgB$_2$ cables housed into a 140 metre long flexible cryostat. [...]
IOP, 2020 - 9 p.
- Published in : J. Phys.: Conf. Ser. 1559 (2020) 012076
Fulltext: PDF;
In : 14th European Conference on Applied Superconductivity, Glasgow, United Kingdom, 1 - 5 Sep 2019, pp.012076
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Conceptual design of the Cryogenic Electrical Feedboxes and the Superconducting Links of LHC
/ Goiffon, T ; Lyngaa, J ; Métral, L ; Perin, A ; Trilhe, P ; Van Weelderen, R
Powering the superconducting magnets of the LHC arcs and long straight sections is performed with more than 1000 electrical terminals supplying currents ranging from 120 A to 13’000 A and distributed in 44 cryogenic electrical feedboxes (DFB). Where space in the LHC tunnel is sufficient, the magnets are powered by locally installed cryogenic electrical feedboxes. [...]
LHC-Project-Report-788; CERN-LHC-Project-Report-788.-
Geneva : CERN, 2005 - 5 p.
Access to fulltext document: PDF;
In : 20th International Cryogenic Engineering Conference and Exhibition, Beijing, China, 11 - 14 May 2004, pp.1059-1062
- Please contact the library if you need to access this document.
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Chapter 14: Cryogenics for the HL-LHC
/ Claudet, S (CERN) ; Ferlin, G (CERN) ; Monneret, E (CERN) ; Perin, A (CERN) ; Sisti, M (CERN) ; Van Weelderen, R (CERN) ; Lees, A (CERN) ; Gahier, V (CERN) ; Brodzinski, K (CERN) ; Delprat, L (CERN)
The discovery of a Higgs boson at CERN in 2012 was the start of a major program working to measure this particle’s properties with the highest possible precision for testing the validity of the Standard Model and to search for further new physics at the energy frontier. The LHC is in a unique position to pursue this program. [...]
2024 - 14 p.
- Published in : Adv. Ser. Direct. High Energy Phys. 31 (2024) 341-354
Fulltext: PDF;
In : The High Luminosity Large Hadron Collider, pp.341-354
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