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Mechanical Effects of the Nonuniform Current Distribution on HTS Coils for Accelerators Wound With REBCO Roebel Cable

Tutkimustuotosvertaisarvioitu

Standard

Mechanical Effects of the Nonuniform Current Distribution on HTS Coils for Accelerators Wound With REBCO Roebel Cable. / Murtomaki, Jaakko S.; Van Nugteren, Jeroen; Kirby, Glyn; Rossi, Lucio; Ruuskanen, Janne; Stenvall, Antti.

julkaisussa: IEEE Transactions on Applied Superconductivity, Vuosikerta 27, Nro 4, 4100405, 01.06.2017.

Tutkimustuotosvertaisarvioitu

Harvard

Murtomaki, JS, Van Nugteren, J, Kirby, G, Rossi, L, Ruuskanen, J & Stenvall, A 2017, 'Mechanical Effects of the Nonuniform Current Distribution on HTS Coils for Accelerators Wound With REBCO Roebel Cable', IEEE Transactions on Applied Superconductivity, Vuosikerta. 27, Nro 4, 4100405. https://doi.org/10.1109/TASC.2017.2665882

APA

Murtomaki, J. S., Van Nugteren, J., Kirby, G., Rossi, L., Ruuskanen, J., & Stenvall, A. (2017). Mechanical Effects of the Nonuniform Current Distribution on HTS Coils for Accelerators Wound With REBCO Roebel Cable. IEEE Transactions on Applied Superconductivity, 27(4), [4100405]. https://doi.org/10.1109/TASC.2017.2665882

Vancouver

Murtomaki JS, Van Nugteren J, Kirby G, Rossi L, Ruuskanen J, Stenvall A. Mechanical Effects of the Nonuniform Current Distribution on HTS Coils for Accelerators Wound With REBCO Roebel Cable. IEEE Transactions on Applied Superconductivity. 2017 kesä 1;27(4). 4100405. https://doi.org/10.1109/TASC.2017.2665882

Author

Murtomaki, Jaakko S. ; Van Nugteren, Jeroen ; Kirby, Glyn ; Rossi, Lucio ; Ruuskanen, Janne ; Stenvall, Antti. / Mechanical Effects of the Nonuniform Current Distribution on HTS Coils for Accelerators Wound With REBCO Roebel Cable. Julkaisussa: IEEE Transactions on Applied Superconductivity. 2017 ; Vuosikerta 27, Nro 4.

Bibtex - Lataa

@article{9952f36279324626bbe97300527493fe,
title = "Mechanical Effects of the Nonuniform Current Distribution on HTS Coils for Accelerators Wound With REBCO Roebel Cable",
abstract = "Future high-energy accelerators will need very high magnetic fields in the range of 20 T. The EuCARD-2 WP10 Future Magnets collaboration is aiming at testing HTS-based Roebel cables in an accelerator magnet. The demonstrator should produce around 17 T, when inserted into the 100-mm aperture of Feather-M2 13-T outsert magnet. HTS Roebel cables are assembled from meander-shaped REBCO-coated conductor tapes. In comparison with fair level of uniformity of current distribution in cables made out of round Nb-Ti or Nb3 Sn strands, current distribution within the coils wound from Roebel cables is highly nonhomogeneous. It results in nonuniform electromagnetic force distribution over the cable that could damage the very thin REBCO superconducting layer. This paper focuses on the numerical models to describe the effect of the nonhomogeneous current distribution on stress distribution in the demonstrator magnet designed for the EuCARD-2 project. Preliminary results indicate that the impregnation bonding between the cable glass fiber insulation and layer-to-layer insulation plays a significant role in the pressure distribution at the cable edges. The stress levels are safe for Roebel cables. Assuming fully bonded connection at the interface, the stresses around the edges are reduced by a large factor.",
keywords = "Accelerator dipoles, HTS magnets, Mechanical engineering, Superconducting magnets",
author = "Murtomaki, {Jaakko S.} and {Van Nugteren}, Jeroen and Glyn Kirby and Lucio Rossi and Janne Ruuskanen and Antti Stenvall",
year = "2017",
month = "6",
day = "1",
doi = "10.1109/TASC.2017.2665882",
language = "English",
volume = "27",
journal = "IEEE Transactions on Applied Superconductivity",
issn = "1051-8223",
publisher = "Institute of Electrical and Electronics Engineers",
number = "4",

}

RIS (suitable for import to EndNote) - Lataa

TY - JOUR

T1 - Mechanical Effects of the Nonuniform Current Distribution on HTS Coils for Accelerators Wound With REBCO Roebel Cable

AU - Murtomaki, Jaakko S.

AU - Van Nugteren, Jeroen

AU - Kirby, Glyn

AU - Rossi, Lucio

AU - Ruuskanen, Janne

AU - Stenvall, Antti

PY - 2017/6/1

Y1 - 2017/6/1

N2 - Future high-energy accelerators will need very high magnetic fields in the range of 20 T. The EuCARD-2 WP10 Future Magnets collaboration is aiming at testing HTS-based Roebel cables in an accelerator magnet. The demonstrator should produce around 17 T, when inserted into the 100-mm aperture of Feather-M2 13-T outsert magnet. HTS Roebel cables are assembled from meander-shaped REBCO-coated conductor tapes. In comparison with fair level of uniformity of current distribution in cables made out of round Nb-Ti or Nb3 Sn strands, current distribution within the coils wound from Roebel cables is highly nonhomogeneous. It results in nonuniform electromagnetic force distribution over the cable that could damage the very thin REBCO superconducting layer. This paper focuses on the numerical models to describe the effect of the nonhomogeneous current distribution on stress distribution in the demonstrator magnet designed for the EuCARD-2 project. Preliminary results indicate that the impregnation bonding between the cable glass fiber insulation and layer-to-layer insulation plays a significant role in the pressure distribution at the cable edges. The stress levels are safe for Roebel cables. Assuming fully bonded connection at the interface, the stresses around the edges are reduced by a large factor.

AB - Future high-energy accelerators will need very high magnetic fields in the range of 20 T. The EuCARD-2 WP10 Future Magnets collaboration is aiming at testing HTS-based Roebel cables in an accelerator magnet. The demonstrator should produce around 17 T, when inserted into the 100-mm aperture of Feather-M2 13-T outsert magnet. HTS Roebel cables are assembled from meander-shaped REBCO-coated conductor tapes. In comparison with fair level of uniformity of current distribution in cables made out of round Nb-Ti or Nb3 Sn strands, current distribution within the coils wound from Roebel cables is highly nonhomogeneous. It results in nonuniform electromagnetic force distribution over the cable that could damage the very thin REBCO superconducting layer. This paper focuses on the numerical models to describe the effect of the nonhomogeneous current distribution on stress distribution in the demonstrator magnet designed for the EuCARD-2 project. Preliminary results indicate that the impregnation bonding between the cable glass fiber insulation and layer-to-layer insulation plays a significant role in the pressure distribution at the cable edges. The stress levels are safe for Roebel cables. Assuming fully bonded connection at the interface, the stresses around the edges are reduced by a large factor.

KW - Accelerator dipoles

KW - HTS magnets

KW - Mechanical engineering

KW - Superconducting magnets

U2 - 10.1109/TASC.2017.2665882

DO - 10.1109/TASC.2017.2665882

M3 - Article

VL - 27

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

IS - 4

M1 - 4100405

ER -