The reduction of the critical current in Nb3Sn cables under transverse forces

H.H.J. ten Kate; H. Weijers; S. Wessel; H. Boschman; L.J.M. van de Klundert

doi:10.1109/20.119979

The reduction of the critical current in Nb₃Sn cables under transverse forces

H.H.J. ten Kate, H. Weijers, S. Wessel, H. Boschman, L.J.M. van de Klundert

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Abstract

The degradation of the critical current of impregnated Rutherford type Nb3Sn cables was investigated as a function of the transverse force applied to the cable surface. Voltage-current characteristics were measured between 9 and 11 T by which the cable is supplied with the full transport current while a section on the broad side of the cable with a length of 40 mm is under pressure. A few samples were investigated as a function of the transverse force strands in the cable. It appears that the degradation of the strands is not uniform; for example, at 200 MPa some strands show 10% while others have 40% critical current degradation, also depending on the critical current criterion used. The global degradation of the cable is 12±2% at 200 MPa, though it is possible that a single bad strand in a cable limits the cable to below this value due to premature quenching of that strand

Original language	English
Pages (from-to)	715-718
Number of pages	4
Journal	IEEE transactions on magnetics
Volume	28
Issue number	1
DOIs	https://doi.org/10.1109/20.119979
Publication status	Published - 1992
Event	12th International Conference on Magnet Technology, MT-12 1991 - Leningrad (St. Petersburg), Russian Federation Duration: 24 Jun 1991 → 28 Jun 1991 Conference number: 12

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title = "The reduction of the critical current in Nb3Sn cables under transverse forces",

abstract = "The degradation of the critical current of impregnated Rutherford type Nb3Sn cables was investigated as a function of the transverse force applied to the cable surface. Voltage-current characteristics were measured between 9 and 11 T by which the cable is supplied with the full transport current while a section on the broad side of the cable with a length of 40 mm is under pressure. A few samples were investigated as a function of the transverse force strands in the cable. It appears that the degradation of the strands is not uniform; for example, at 200 MPa some strands show 10% while others have 40% critical current degradation, also depending on the critical current criterion used. The global degradation of the cable is 12±2% at 200 MPa, though it is possible that a single bad strand in a cable limits the cable to below this value due to premature quenching of that strand",

author = "{ten Kate}, H.H.J. and H. Weijers and S. Wessel and H. Boschman and {van de Klundert}, L.J.M.",

year = "1992",

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journal = "IEEE transactions on magnetics",

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T1 - The reduction of the critical current in Nb3Sn cables under transverse forces

AU - ten Kate, H.H.J.

AU - Weijers, H.

AU - Wessel, S.

AU - Boschman, H.

AU - van de Klundert, L.J.M.

N1 - Conference code: 12

PY - 1992

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N2 - The degradation of the critical current of impregnated Rutherford type Nb3Sn cables was investigated as a function of the transverse force applied to the cable surface. Voltage-current characteristics were measured between 9 and 11 T by which the cable is supplied with the full transport current while a section on the broad side of the cable with a length of 40 mm is under pressure. A few samples were investigated as a function of the transverse force strands in the cable. It appears that the degradation of the strands is not uniform; for example, at 200 MPa some strands show 10% while others have 40% critical current degradation, also depending on the critical current criterion used. The global degradation of the cable is 12±2% at 200 MPa, though it is possible that a single bad strand in a cable limits the cable to below this value due to premature quenching of that strand

AB - The degradation of the critical current of impregnated Rutherford type Nb3Sn cables was investigated as a function of the transverse force applied to the cable surface. Voltage-current characteristics were measured between 9 and 11 T by which the cable is supplied with the full transport current while a section on the broad side of the cable with a length of 40 mm is under pressure. A few samples were investigated as a function of the transverse force strands in the cable. It appears that the degradation of the strands is not uniform; for example, at 200 MPa some strands show 10% while others have 40% critical current degradation, also depending on the critical current criterion used. The global degradation of the cable is 12±2% at 200 MPa, though it is possible that a single bad strand in a cable limits the cable to below this value due to premature quenching of that strand

U2 - 10.1109/20.119979

DO - 10.1109/20.119979

M3 - Article

SN - 0018-9464

VL - 28

SP - 715

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JO - IEEE transactions on magnetics

JF - IEEE transactions on magnetics

IS - 1

T2 - 12th International Conference on Magnet Technology, MT-12 1991

Y2 - 24 June 1991 through 28 June 1991

ER -

The reduction of the critical current in Nb3Sn cables under transverse forces

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The reduction of the critical current in Nb₃Sn cables under transverse forces