2025-07-09
11:45 |
FCC-ee cavities RF power coupler: study on the optimal cooling strategy to boost the cryomodule energy efficiency
/ Canderan, K (CERN) ; Parma, V (CERN)
The RF fundamental power coupler (FPC) in SRF accelerating systems can have a major contribution to the cryogenic power consumption. In the framework of the FCC feasibility study, the focus on the energy saving is of primary importance given the size of the machine, with 264 cavities at 400 MHz and 488 cavities at 800 MHz for the collider, and 600 cavities at 800 MHz for the booster, at the ttbar working point. [...]
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012183
Fulltext: PDF;
In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012183
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2025-07-09
11:45 |
Investigation of a Helium cooling circulation loop on a 1.3 GHz cavity structure
/ Chioteli, M (CERN) ; Constantinou, H (CERN) ; Onufrena, A (CERN) ; Koettig, T (CERN)
This paper presents a novel cryogenic cooling method for Superconducting Radio Frequency (SRF) cavities, utilizing a cold helium flow passed through a brazed capillary for their cooling. Such novel and drastically reduced helium content cooling scheme can be applied to a wide variety of superconducting cavities, and it has many advantages compared to the traditional cooling method of SRF cavities in a liquid helium bath. [...]
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012047
Fulltext: PDF;
In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012047
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2025-07-09
11:43 |
Insertion thermometry experience at CERN
/ Bora, Matteo (CERN) ; Casas, Juan (CERN) ; Noly, Florian (CERN) ; Vauthier, Nicolas (CERN)
Insertion thermometry is desirable for low pressure gaseous cold helium environment due to the poor heat transfer coefficient between the fluid and the pipe wall, complicating the measurement on the insulation vacuum side. Insertion thermometry requires a capillary that, in the case of CERN equipment, has a wide variation of the overall length. [...]
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012174
Fulltext: PDF;
In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012174
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2025-07-09
11:43 |
The Cryogenic Distribution System for the High Luminosity LHC upgrade at CERN
/ Sisti, M (CERN) ; Claudet, S (CERN) ; Metselaar, J (CERN) ; Lees, A (CERN) ; Merli, F (CERN) ; Perin, A (CERN) ; Gahier, V (CERN)
The High Luminosity upgrade of the Large Hadron Collider (HL-LHC) will require the replacement of the final focusing superconducting magnets, the implementation of new superconducting links to power the magnets and the implementation of new Superconducting Radio-Frequency (SRF) crab cavities, totalling a length of about 150 m on both sides of the collision points of the ATLAS (P1) and of the CMS (P5) experiments in the LHC accelerator. To cool the new and reconfigured cryogenic devices, a new Cryogenic Distribution System will replace the existing LHC cryogenic distribution line on each side of the experiments. [...]
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012114
Fulltext: PDF;
In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012114
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2025-07-09
11:42 |
2 K system exergetic optimisation and helium recovery system for FCC-ee
/ Naydenov, B (CERN) ; Delprat, L (CERN) ; Bradu, B (CERN) ; Brodzinski, K (CERN)
At its ttbar stage, FCC-ee is expected to require over 200 cryomodules housing 800 MHz bulk niobium superconducting radio frequency cavities at 2 K, and more than 60 cryomodules housing 400 MHz niobium-sputtered copper cavities at 4.5 K. The complexity, energy intensity, and scale of the associated cryogenic system requires a holistic design approach. [...]
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012018
Fulltext: PDF;
In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012018
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2025-07-09
11:42 |
Detailed study of the cryogenic jumper connections between the cryogenic distribution line and the superconducting magnets of the High Luminosity LHC upgrade at CERN
/ Merli, F (CERN) ; Claudet, S (CERN) ; Ramos, D (CERN) ; Lees, A (CERN) ; Perin, A (CERN) ; Prin, H (CERN) ; Sisti, M (CERN)
The High Luminosity upgrade of the Large Hadron Collider (HL-LHC) project will require a new cryogenic system to cool the new superconducting components in the final focusing regions for the ATLAS and the CMS experiments. New superconducting magnets operating in pressurized HeII at 1.9 K will replace the existing ones and each magnet will generate heat loads of several hundred watts. [...]
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012123
Fulltext: PDF;
In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012123
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2025-07-09
11:42 |
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2025-07-09
07:49 |
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2025-07-08
10:02 |
High Luminosity LHC Optics Feasibility Studies for: ATLAS, ALICE, and LHCb
/ Patel, Pragati (Cracow, INP) ; Trzebiński, Maciej (Cracow, INP)
Properties of proton trajectories along the High Luminosity LHC beam-line in the vicinity of ATLAS, ALICE, and LHCb interaction points are discussed. Based on this, possible locations of forward proton detectors in the vicinity of these experiments were identified. [...]
2024 - 6 p.
- Published in : Acta Phys. Pol. B Proc. Suppl. 17 (2024) 5-A30
External link: Fulltext
In : 30th Cracow Epiphany Conference on Precision Physics at High Energy Colliders: dedicated to the memory of Staszek Jadach (Epiphany 2024), Cracow, Poland, 8 - 12 Jan 2024, pp.5-A30
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2025-06-25
06:00 |
Cryogenic options for future accelerators: case study for the Muon Collider ring
/ Borges De Sousa, P (CERN) ; Naydenov, B (CERN) ; Delprat, L (CERN) ; Koettig, T (CERN) ; Van Weelderen, R (CERN)
Future, multi-km particle accelerator projects will be under heavy scrutiny to be energetically sustainable. Compared to previous accelerators, these machines must sustain increasingly high beam-induced, static, and dynamic heat loads per meter length. [...]
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012109
Fulltext: PDF;
In : 26th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012109
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