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Dielectric, thermal and mechanical properties of insulation systems for quench heaters for the protection of superconducting magnets
/ Scheuerlein, Christian (CERN) ; Osuna, Javier (CERN) ; Vielhauer, Julia (CERN) ; De Oliveira, Rui (CERN) ; Koettig, Torsten (CERN) ; Piccin, Roland (CERN)
High dielectric strength, low thermal resistance and mechanical robustness are conflicting requirements on the insulation system between the superconductors in magnet coils and the quench heaters placed on the coil for active protection in case of a quench. To investigate possibilities to further improve the performance of quench heaters for future superconducting magnets, we have characterised polyimide, PEEK and fibre reinforced PEEK films that can be used to produce large flexibly quench heater circuits. [...]
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012202
Fulltext: PDF;
In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012202
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Thermomechanical properties of epoxy and wax matrix composites for superconducting magnets
/ Bertsch, Jacob (CERN) ; Scheuerlein, Christian (CERN) ; Wiker, Petter (CERN ; Norwegian U. Sci. Tech.) ; Parragh, David (CERN) ; Echtermeyer, Andreas (Norwegian U. Sci. Tech.) ; Piccin, Roland (CERN)
Thermomechanical properties of epoxy resin systems and paraffin wax for the vacuum impregnation of superconducting magnet coils have been studied at ambient and at cryogenic temperatures. Parameters for the thermomechanical modelling of isotropic pure resins and anisotropic S2 glass fibre reinforced composites, and their stress limits under uniaxial tensile, bending and shear loading have been determined..
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012204
Fulltext: PDF;
In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012204
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Thermomechanical properties and irradiation induced aging of SLA and FDM 3D printed high performance polymers
/ Scheuerlein, Christian (CERN) ; Parragh, David Mate (CERN) ; Vielhauer, Julia (CERN) ; Gaarud, Anders (CERN) ; Martin, Noemie (CERN) ; Piccin, Roland (CERN)
The thermomechanical properties of 3D printed polymers for potential use in superconducting devices have been compared. The FDM printed thermoplastics PEEK and ULTEM 9085 exhibit strongly anisotropic properties, with very high mechanical strength and fracture toughness in the flat and on edge printing directions, but much lower strength and toughness in the upright position. [...]
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012209
Fulltext: PDF;
In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012209
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Fracture Toughness, Radiation Hardness, and Processibility of Polymers for Superconducting Magnets
/ Gaarud, Anders (CERN) ; Scheuerlein, Christian (CERN) ; Parragh, David Mate (CERN) ; Clement, Sébastien (CERN) ; Bertsch, Jacob (CERN) ; Urscheler, Cedric (CERN) ; Piccin, Roland (CERN) ; Ravotti, Federico (CERN) ; Pezzullo, Giuseppe (CERN) ; Lach, Ralf (Julich, Forschungszentrum)
High fracture toughness at cryogenic temperature and radiation hardness can be conflicting requirements for the resins for the impregnation of superconducting magnet coils. The fracture toughness of different epoxy-resin systems at room temperature (RT) and at 77 K was measured, and their toughness was compared with that determined for a polyurethane, polycarbonate (PC) and poly(methyl methacrylate) (PMMA). [...]
2024 - 17 p.
- Published in : Polymers 16 (2024) 1287
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Effect of Irradiation Temperature and Atmosphere on Aging of Epoxy Resins for Superconducting Magnets
/ Parragh, David Mate (CERN) ; Scheuerlein, Christian (CERN) ; Martin, Noémie (Lyon U.) ; Piccin, Roland (CERN) ; Ravotti, Federico (CERN) ; Pezzullo, Giuseppe (CERN) ; Koettig, Torsten (CERN) ; Lellinger, Dirk (Unlisted, DE)
The superconducting magnets of future particle accelerators will be exposed to high
irradiation doses at cryogenic temperatures. To investigate the effect of irradiation temperature
and atmosphere on the aging behavior, we have characterized the changes in thermomechanical
properties of six epoxy resins for potential use in superconducting magnets after irradiation up to
20 MGy in ambient air, inert gas, and liquid helium. [...]
2024 - 15 p.
- Published in : MDPI Polymers 16 (2024) 407
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LHC Triplet Task Force Report
/ Arduini, Gianluigi (CERN) ; Bradu, Benjamin (CERN) ; Brodzinski, Krzysztof (CERN) ; Bruce, Roderik (CERN) ; Cerutti, Francesco (CERN) ; Ciccotelli, Alessia (University of Manchester (GB)) ; Deferne, Guy (CERN) ; Fartoukh, Stephane (CERN) ; Fessia, Paolo (CERN) ; Garion, Cedric (CERN) et al.
The excellent performance of the Large Hadron Collider (LHC) and the extension of Run 3 by one year have led to a significant increase of the expected integrated luminosity by the end of its operation and before the start of the High Luminosity LHC (HL-LHC), exceeding the design LHC integrated luminosity of 300 fb−1 for which the final focus region has been designed. [...]
CERN-ACC-2023-0004.
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2023. - 95 p.
Full text
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Effect of Epoxy Volume Fraction on the Stiffness of Nb$_3$Sn Rutherford Cable Stacks
/ Wolf, Felix (CERN) ; Lackner, Friedrich (CERN) ; Hofmann, Michael (Forschungsreaktor Munich) ; Scheuerlein, Christian (CERN) ; Schoerling, Daniel (CERN) ; Tommasini, Davide (CERN)
For the optimization of Nb3Sn superconducting accelerator magnet design and assembly parameters the stress-strain behavior of the coils needs to be known. We have measured the stiffness of Nb3Sn Rutherford cable stacks with different epoxy volume fraction. [...]
2019 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 29 (2019) 8401006
In : Applied Superconductivity Conference 2018, Seattle, United States Of America, 28 Oct - 2 Nov 2018, pp.8401006
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