Training performance of Nb3Sn Rutherford cables in a channel with a wide range of impregnation materials

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

doi:10.48550/arXiv.2211.10213

Training performance of Nb3Sn Rutherford cables in a channel with a wide range of impregnation materials

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

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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. 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\"urich. 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
Publisher	ArXiv.org
DOIs	https://doi.org/10.48550/arXiv.2211.10213
Publication status	Published - 18 Nov 2022

Keywords

physics.acc-ph

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10.48550/arXiv.2211.10213

2211.10213v1

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title = "Training performance of Nb3Sn Rutherford cables in a channel with a wide range of impregnation materials",

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. 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\{"}urich. 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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author = "S. Otten and A. Kario and W.A.J. Wessel and Jorick Leferink and {Ten Kate}, H.H.J. and M. Daly and C. Hug and S. Sidorov and A. Brem and B. Auchmann and P. Studer and T. Tervoort",

note = "4 pages, 6 figures. Submitted to IEEE Transactions on Applied Superconductivity (TAS) for publication in the ASC2022 special issue. Copyright of the article was transferred to IEEE by submission",

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AU - Otten, S.

AU - Kario, A.

AU - Wessel, W.A.J.

AU - Leferink, Jorick

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.

N1 - 4 pages, 6 figures. Submitted to IEEE Transactions on Applied Superconductivity (TAS) for publication in the ASC2022 special issue. Copyright of the article was transferred to IEEE by submission

PY - 2022/11/18

Y1 - 2022/11/18

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. 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\"urich. 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. 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\"urich. 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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DO - 10.48550/arXiv.2211.10213

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BT - Training performance of Nb3Sn Rutherford cables in a channel with a wide range of impregnation materials

PB - ArXiv.org

ER -

Training performance of Nb3Sn Rutherford cables in a channel with a wide range of impregnation materials

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