Magnets for Particle Accelerators and Colliders

Bottura, L.; Rossi, L.

doi:10.1002/3527600434.eap793

Cited by 3 publications

(1 citation statement)

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“…Indeed those magnets are all wound with small conductors, protected in a very special way that cannot be extrapolated over a large series of connected magnets. Traditionally solenoids feature a field only twice or less than dipole, due to intrinsic more efficient use of coil thickness, [23]. However since the advent of HTS the gap has grown considerably, approaching a factor 3, see Fig.…”

Section: A Eucard2-wp10 Programmementioning

confidence: 99%

The EuCARD-2 Future Magnets European Collaboration for Accelerator-Quality HTS Magnets

Rossi

Badel

Bajko

et al. 2015

IEEE Trans. Appl. Supercond.

114

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Abstract-EuCARD-2 is a project supported by FP7-European Commission that includes, inter alia, a work-package (WP10) called "Future Magnets". This project is part of the long term development that CERN is launching to explore magnet technology at 16 T to 20 T dipole operating field, within the scope of a study on Future Circular Colliders. The EuCARD2 collaboration is closely liaising with similar programs for high field accelerator magnets in the USA and Japan. The main focus of EuCARD2 WP10 is the development of a 10 kA-class superconducting, high current density cable suitable for accelerator magnets, The cable will be used to wind a stand-alone magnet 500 mm long and with an aperture of 40 mm. This magnet should yield 5 T, when stand-alone, and will enable to reach a 15 to 18 T dipole field by placing it in a large bore background dipole of 12-15 T. REBCO based Roebel cables is the baseline. Various magnet configurations with HTS tapes are under investigation and also use of Bi-2212 round wire based cables is considered. The paper presents the structure of the collaboration and describes the main choices made in the first year of the program, which has a breadth of five to six years of which four are covered by the FP7 frame.

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Section: A Eucard2-wp10 Programmementioning

confidence: 99%

The EuCARD-2 Future Magnets European Collaboration for Accelerator-Quality HTS Magnets

Rossi

Badel

Bajko

et al. 2015

IEEE Trans. Appl. Supercond.

114

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Investigating the effect of rolling deformation on the electro-mechanical limits of Nb₃Sn wires produced by RRP^® and PIT technologies

Bagni,

Calzolaio,

Bovone

et al. 2024

Supercond. Sci. Technol.

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Future high-field magnets for particle accelerators hinge on the crucial development of advanced Nb3Sn wires engineered to withstand the large stresses generated during magnet assembly and operation. The superconducting properties of Nb3Sn enable the design of compact accelerator-quality magnets above 10 T, but at the same time the brittleness and strain sensitivity of the material impose careful consideration of the mechanical limits. In addition, accelerator magnets are wound using Rutherford cables and the cabling process generates deformations in the wire that can affect its electro-mechanical performance.This paper reports on the impact of the rolling deformation on the transverse stress tolerance of high-performance Restacked-Rod-Process (RRP®) and Powder-in-Tube (PIT) Nb3Sn wires. Rolling deformation was used to mimic the effect of cabling on the wire shape. Deformed samples were compared to reference round wires in terms of stress dependence and irreversible limit (σirr ) of the critical current (Ic ) under transverse compressive loads up to 240 MPa. Experiments were performed at 4.2 K, 19 T, on resin-impregnated single wires that imitate the operating conditions in a Rutherford cable of an accelerator magnet. The results show that rolling deformation has a detrimental effect on the initial Ic of PIT wires, but it does not influence the behavior of the wire under stresses above 70 MPa. On the other hand, the deformation of RRP® wires leads to an improved σirr without affecting the initial Ic .Additionally, a 2D-mechanical Finite Element Method model of the RRP® wire was developed to investigate the impact of the wire geometry on the plastic deformation of the copper matrix, which induces residual stresses on Nb3Sn and is the main cause for the permanent reduction of Ic . Based on the model results, an alternative layout of the wire was proposed that improves its stress tolerance without affecting its electrical transport properties.

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High temperature superconducting combined function magnet for carbon-ion radiotherapy

Baird¹

2021

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Magnets for Particle Accelerators and Colliders

Abstract: The article contains sections titled: Introduction Accelerators, Colliders, and Role of Superconducting Magnets Magnetic Design Mechanical Design Margins, Stability, Training, and Protection Field Quality Fast‐Cycled Synchrotrons Acknowledgments

Cited by 3 publications

References 33 publications

The EuCARD-2 Future Magnets European Collaboration for Accelerator-Quality HTS Magnets

The EuCARD-2 Future Magnets European Collaboration for Accelerator-Quality HTS Magnets

Investigating the effect of rolling deformation on the electro-mechanical limits of Nb₃Sn wires produced by RRP^® and PIT technologies

High temperature superconducting combined function magnet for carbon-ion radiotherapy

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Magnets for Particle Accelerators and Colliders

Abstract: The article contains sections titled: Introduction Accelerators, Colliders, and Role of Superconducting Magnets Magnetic Design Mechanical Design Margins, Stability, Training, and Protection Field Quality Fast‐Cycled Synchrotrons Acknowledgments

Cited by 3 publications

References 33 publications

The EuCARD-2 Future Magnets European Collaboration for Accelerator-Quality HTS Magnets

The EuCARD-2 Future Magnets European Collaboration for Accelerator-Quality HTS Magnets

Investigating the effect of rolling deformation on the electro-mechanical limits of Nb3Sn wires produced by RRP® and PIT technologies

High temperature superconducting combined function magnet for carbon-ion radiotherapy

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Investigating the effect of rolling deformation on the electro-mechanical limits of Nb₃Sn wires produced by RRP^® and PIT technologies