Critical current degradation in Nb3Sn cables under transverse pressure

Herman H.J. ten Kate; H.W. Weijers; H. van Oort; J.M. van Oort

doi:10.1109/77.233653

Critical current degradation in Nb3Sn cables under transverse pressure

Herman H.J. ten Kate, H.W. Weijers, H. van Oort, J.M. van Oort

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Abstract

The critical current degradation of a few sample Rutherford-type Nb3Sn cables is investigated as a function of transverse pressure. A comparison is made between Nb3Sn strands produced by the powder-in-tube, bronze, and modified jelly roll processes. The (keystoned) Rutherford cables are charged at 11 T under transverse pressures up to 250 MPa. Large differences in critical current reduction are observed, ranging from 6 to about 60% at 200 MPa, depending on the type of Nb3Sn. It appears that about 40% of the total reduction is irreversible. Moreover, the irreversible part shows relaxation, and a partial recovery is possible by thermal cycling

Original language	Undefined
Pages (from-to)	1334-1337
Number of pages	4
Journal	IEEE transactions on applied superconductivity
Volume	3
Issue number	1, Par
DOIs	https://doi.org/10.1109/77.233653
Publication status	Published - 1993

Keywords

IR-23749
METIS-128548

Access to Document

10.1109/77.233653

Critical_current_degradation_-_kate

Cite this

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title = "Critical current degradation in Nb3Sn cables under transverse pressure",

abstract = "The critical current degradation of a few sample Rutherford-type Nb3Sn cables is investigated as a function of transverse pressure. A comparison is made between Nb3Sn strands produced by the powder-in-tube, bronze, and modified jelly roll processes. The (keystoned) Rutherford cables are charged at 11 T under transverse pressures up to 250 MPa. Large differences in critical current reduction are observed, ranging from 6 to about 60% at 200 MPa, depending on the type of Nb3Sn. It appears that about 40% of the total reduction is irreversible. Moreover, the irreversible part shows relaxation, and a partial recovery is possible by thermal cycling",

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AU - ten Kate, Herman H.J.

AU - Weijers, H.W.

AU - van Oort, H.

AU - van Oort, J.M.

PY - 1993

Y1 - 1993

N2 - The critical current degradation of a few sample Rutherford-type Nb3Sn cables is investigated as a function of transverse pressure. A comparison is made between Nb3Sn strands produced by the powder-in-tube, bronze, and modified jelly roll processes. The (keystoned) Rutherford cables are charged at 11 T under transverse pressures up to 250 MPa. Large differences in critical current reduction are observed, ranging from 6 to about 60% at 200 MPa, depending on the type of Nb3Sn. It appears that about 40% of the total reduction is irreversible. Moreover, the irreversible part shows relaxation, and a partial recovery is possible by thermal cycling

AB - The critical current degradation of a few sample Rutherford-type Nb3Sn cables is investigated as a function of transverse pressure. A comparison is made between Nb3Sn strands produced by the powder-in-tube, bronze, and modified jelly roll processes. The (keystoned) Rutherford cables are charged at 11 T under transverse pressures up to 250 MPa. Large differences in critical current reduction are observed, ranging from 6 to about 60% at 200 MPa, depending on the type of Nb3Sn. It appears that about 40% of the total reduction is irreversible. Moreover, the irreversible part shows relaxation, and a partial recovery is possible by thermal cycling

KW - IR-23749

KW - METIS-128548

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DO - 10.1109/77.233653

M3 - Article

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JO - IEEE transactions on applied superconductivity

JF - IEEE transactions on applied superconductivity

IS - 1, Par

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