Training Curves of Nb3Sn Rutherford Cables With a Wide Range of Impregnation Materials Measured in the BOX Facility

S. Otten; A. Kario; W.A.J. Wessel; J. Leferink; H.H.J. Ten Kate; M. Daly; C. Hug; S. Sidorov; A. Brem; B. Auchmann; P. Studer; T. Tervoort

doi:10.1109/TASC.2023.3267051

Training Curves of Nb₃Sn Rutherford Cables With a Wide Range of Impregnation Materials Measured in the BOX Facility

S. Otten^*, A. Kario, W.A.J. Wessel, J. Leferink, H.H.J. Ten Kate, M. Daly, C. Hug, S. Sidorov, A. Brem, B. Auchmann, P. Studer, T. Tervoort

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

Training of accelerator magnets is a costly and time consuming process. The number of training quenches must therefore be reduced to a minimum. We investigate training of impregnated Nb3Sn Rutherford cable in a small-scale experiment named BOX (BOnding Experiment). The test involves a Rutherford cable impregnated in a meandering channel simulating the environment of a canted-cosine-theta (CCT) coil. The sample is powered using a transformer and the Lorentz force is generated by an externally applied magnetic field. The low material and helium consumption enable the test of a larger number of samples. In this article, we present training of samples impregnated with alumina-filled epoxy resins, a modified resin with paraffin-like mechanical properties, and a new tough resin in development at ETH Zürich. These new data are compared with previous results published earlier. Compared to samples with unfilled epoxy resin, those with alumina-filled epoxy show favorable training properties with higher initial quench currents and fewer training quenches before reaching 80% of the critical current.

Original language	English
Article number	4003605
Journal	IEEE transactions on applied superconductivity
Volume	33
Issue number	5
DOIs	https://doi.org/10.1109/TASC.2023.3267051
Publication status	Published - 1 Aug 2023

Keywords

Impregnation
NbSn
Quench
Rutherford cable
Training

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ArticleFinal published version, 2.11 MBLicence: CC BY

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Otten, S., Kario, A., Wessel, W. A. J., Leferink, J., Ten Kate, H. H. J., Daly, M., Hug, C., Sidorov, S., Brem, A., Auchmann, B., Studer, P., & Tervoort, T. (2023). Training Curves of Nb₃Sn Rutherford Cables With a Wide Range of Impregnation Materials Measured in the BOX Facility. IEEE transactions on applied superconductivity, 33(5), Article 4003605. https://doi.org/10.1109/TASC.2023.3267051

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abstract = "Training of accelerator magnets is a costly and time consuming process. The number of training quenches must therefore be reduced to a minimum. We investigate training of impregnated Nb3Sn Rutherford cable in a small-scale experiment named BOX (BOnding Experiment). The test involves a Rutherford cable impregnated in a meandering channel simulating the environment of a canted-cosine-theta (CCT) coil. The sample is powered using a transformer and the Lorentz force is generated by an externally applied magnetic field. The low material and helium consumption enable the test of a larger number of samples. In this article, we present training of samples impregnated with alumina-filled epoxy resins, a modified resin with paraffin-like mechanical properties, and a new tough resin in development at ETH Z{\"u}rich. These new data are compared with previous results published earlier. Compared to samples with unfilled epoxy resin, those with alumina-filled epoxy show favorable training properties with higher initial quench currents and fewer training quenches before reaching 80% of the critical current.",

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Otten, S , Kario, A , Wessel, WAJ, Leferink, J, Ten Kate, HHJ, Daly, M, Hug, C, Sidorov, S, Brem, A, Auchmann, B, Studer, P & Tervoort, T 2023, 'Training Curves of Nb₃Sn Rutherford Cables With a Wide Range of Impregnation Materials Measured in the BOX Facility', IEEE transactions on applied superconductivity, vol. 33, no. 5, 4003605. https://doi.org/10.1109/TASC.2023.3267051

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AU - Leferink, J.

AU - Ten Kate, H.H.J.

AU - Daly, M.

AU - Hug, C.

AU - Sidorov, S.

AU - Brem, A.

AU - Auchmann, B.

AU - Studer, P.

AU - Tervoort, T.

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N2 - Training of accelerator magnets is a costly and time consuming process. The number of training quenches must therefore be reduced to a minimum. We investigate training of impregnated Nb3Sn Rutherford cable in a small-scale experiment named BOX (BOnding Experiment). The test involves a Rutherford cable impregnated in a meandering channel simulating the environment of a canted-cosine-theta (CCT) coil. The sample is powered using a transformer and the Lorentz force is generated by an externally applied magnetic field. The low material and helium consumption enable the test of a larger number of samples. In this article, we present training of samples impregnated with alumina-filled epoxy resins, a modified resin with paraffin-like mechanical properties, and a new tough resin in development at ETH Zürich. These new data are compared with previous results published earlier. Compared to samples with unfilled epoxy resin, those with alumina-filled epoxy show favorable training properties with higher initial quench currents and fewer training quenches before reaching 80% of the critical current.

AB - Training of accelerator magnets is a costly and time consuming process. The number of training quenches must therefore be reduced to a minimum. We investigate training of impregnated Nb3Sn Rutherford cable in a small-scale experiment named BOX (BOnding Experiment). The test involves a Rutherford cable impregnated in a meandering channel simulating the environment of a canted-cosine-theta (CCT) coil. The sample is powered using a transformer and the Lorentz force is generated by an externally applied magnetic field. The low material and helium consumption enable the test of a larger number of samples. In this article, we present training of samples impregnated with alumina-filled epoxy resins, a modified resin with paraffin-like mechanical properties, and a new tough resin in development at ETH Zürich. These new data are compared with previous results published earlier. Compared to samples with unfilled epoxy resin, those with alumina-filled epoxy show favorable training properties with higher initial quench currents and fewer training quenches before reaching 80% of the critical current.

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Training Curves of Nb₃Sn Rutherford Cables With a Wide Range of Impregnation Materials Measured in the BOX Facility

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Keywords

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