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Exploration of Two Layer Nb3Sn Designs of the Future Circular Collider Main Quadrupoles

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Exploration of Two Layer Nb3Sn Designs of the Future Circular Collider Main Quadrupoles. / Lorin, Clement; Fleiter, Jerome; Salmi, Tiina; Schoerling, Daniel.

In: IEEE Transactions on Applied Superconductivity, Vol. 29, No. 5, 4001005, 01.08.2019.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Lorin, C, Fleiter, J, Salmi, T & Schoerling, D 2019, 'Exploration of Two Layer Nb3Sn Designs of the Future Circular Collider Main Quadrupoles', IEEE Transactions on Applied Superconductivity, vol. 29, no. 5, 4001005. https://doi.org/10.1109/TASC.2019.2892814

APA

Lorin, C., Fleiter, J., Salmi, T., & Schoerling, D. (2019). Exploration of Two Layer Nb3Sn Designs of the Future Circular Collider Main Quadrupoles. IEEE Transactions on Applied Superconductivity, 29(5), [4001005]. https://doi.org/10.1109/TASC.2019.2892814

Vancouver

Lorin C, Fleiter J, Salmi T, Schoerling D. Exploration of Two Layer Nb3Sn Designs of the Future Circular Collider Main Quadrupoles. IEEE Transactions on Applied Superconductivity. 2019 Aug 1;29(5). 4001005. https://doi.org/10.1109/TASC.2019.2892814

Author

Lorin, Clement ; Fleiter, Jerome ; Salmi, Tiina ; Schoerling, Daniel. / Exploration of Two Layer Nb3Sn Designs of the Future Circular Collider Main Quadrupoles. In: IEEE Transactions on Applied Superconductivity. 2019 ; Vol. 29, No. 5.

Bibtex - Download

@article{dfb675f1cd0847a8ae710f5ee232152d,
title = "Exploration of Two Layer Nb3Sn Designs of the Future Circular Collider Main Quadrupoles",
abstract = "The goal of this study is to propose an alternative FCC quadrupole design where the risk from both their fabrication and their operation in the machine is reduced compared to previous analysis. Therefore, the number of coil layers has been reduced from four to two and the load-line margin has been increased from 14{\%} to 20{\%} compared to previous investigations ('Design of a Nb3Sn 400 T/m quadrupole for the future circular collider,' IEEE Trans. Appl. Supercond., vol. 28, no. 3, p. 4004905, Apr. 2018). Indeed, the idea is to only challenge the ∼5000 FCC main dipoles and stay at a relatively low complexity for the ∼700 FCC main quadrupoles so they have a limiting impact on the machine operation and reliability. An exploration of the strand diameter (0.7-0.9 mm), the cable size (40-60 strands), as well as the protection delay (30-40 ms) is performed on two-dimensional (2-D) magnetic designs of the FCC main quadrupole. A discussion on cable windability allows for the selection of one design generating 367 T/m. The design is mechanically constrained with a conventional collar structure leading to collaring peak stress of 115 MPa. A single coupling-loss-induced quench unit ensures a safe magnet operation with a 300 K hotspot temperature.",
keywords = "collar structure,CLIQ protection system, MQ, Nb Sn coil",
author = "Clement Lorin and Jerome Fleiter and Tiina Salmi and Daniel Schoerling",
year = "2019",
month = "8",
day = "1",
doi = "10.1109/TASC.2019.2892814",
language = "English",
volume = "29",
journal = "IEEE Transactions on Applied Superconductivity",
issn = "1051-8223",
publisher = "Institute of Electrical and Electronics Engineers",
number = "5",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Exploration of Two Layer Nb3Sn Designs of the Future Circular Collider Main Quadrupoles

AU - Lorin, Clement

AU - Fleiter, Jerome

AU - Salmi, Tiina

AU - Schoerling, Daniel

PY - 2019/8/1

Y1 - 2019/8/1

N2 - The goal of this study is to propose an alternative FCC quadrupole design where the risk from both their fabrication and their operation in the machine is reduced compared to previous analysis. Therefore, the number of coil layers has been reduced from four to two and the load-line margin has been increased from 14% to 20% compared to previous investigations ('Design of a Nb3Sn 400 T/m quadrupole for the future circular collider,' IEEE Trans. Appl. Supercond., vol. 28, no. 3, p. 4004905, Apr. 2018). Indeed, the idea is to only challenge the ∼5000 FCC main dipoles and stay at a relatively low complexity for the ∼700 FCC main quadrupoles so they have a limiting impact on the machine operation and reliability. An exploration of the strand diameter (0.7-0.9 mm), the cable size (40-60 strands), as well as the protection delay (30-40 ms) is performed on two-dimensional (2-D) magnetic designs of the FCC main quadrupole. A discussion on cable windability allows for the selection of one design generating 367 T/m. The design is mechanically constrained with a conventional collar structure leading to collaring peak stress of 115 MPa. A single coupling-loss-induced quench unit ensures a safe magnet operation with a 300 K hotspot temperature.

AB - The goal of this study is to propose an alternative FCC quadrupole design where the risk from both their fabrication and their operation in the machine is reduced compared to previous analysis. Therefore, the number of coil layers has been reduced from four to two and the load-line margin has been increased from 14% to 20% compared to previous investigations ('Design of a Nb3Sn 400 T/m quadrupole for the future circular collider,' IEEE Trans. Appl. Supercond., vol. 28, no. 3, p. 4004905, Apr. 2018). Indeed, the idea is to only challenge the ∼5000 FCC main dipoles and stay at a relatively low complexity for the ∼700 FCC main quadrupoles so they have a limiting impact on the machine operation and reliability. An exploration of the strand diameter (0.7-0.9 mm), the cable size (40-60 strands), as well as the protection delay (30-40 ms) is performed on two-dimensional (2-D) magnetic designs of the FCC main quadrupole. A discussion on cable windability allows for the selection of one design generating 367 T/m. The design is mechanically constrained with a conventional collar structure leading to collaring peak stress of 115 MPa. A single coupling-loss-induced quench unit ensures a safe magnet operation with a 300 K hotspot temperature.

KW - collar structure,CLIQ protection system

KW - MQ

KW - Nb Sn coil

U2 - 10.1109/TASC.2019.2892814

DO - 10.1109/TASC.2019.2892814

M3 - Article

VL - 29

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

IS - 5

M1 - 4001005

ER -