Analytical Formulation of Ic Dependence on Torsion of YBCO and BSCCO Conductors

The behavior of HTS tapes under torsion is of key importance for the definition of the allowable twist during cabling activity. In this paper, we report on the elaboration of selfconsistent analytical expressions of Ic dependence on twist pitch for YBCO and BSCCO (2223) conductors. The computed expr...

Descripción completa

Detalles Bibliográficos
Autores principales: Fleiter, J, Sitko, M, Ballarino, A
Lenguaje:eng
Publicado: 2013
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.1109/TASC.2012.2228292
http://cds.cern.ch/record/1516076
_version_ 1780928434305761280
author Fleiter, J
Sitko, M
Ballarino, A
author_facet Fleiter, J
Sitko, M
Ballarino, A
author_sort Fleiter, J
collection CERN
description The behavior of HTS tapes under torsion is of key importance for the definition of the allowable twist during cabling activity. In this paper, we report on the elaboration of selfconsistent analytical expressions of Ic dependence on twist pitch for YBCO and BSCCO (2223) conductors. The computed expressions are validated with the results of a series of tests performed at 77 K and in self-field with a purpose-built setup. The Ic was observed to be reduced to 95% of the unstrained value for twist pitches of 114 mm for BSCCO tapes, and 80–90 mm for YBCO tapes. The reduction of performance was identified to be caused mainly by irreversible degradation of Ic at the tapes edges. At lower temperatures, a slightly lower sensitivity to twist is expected.
id cern-1516076
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2013
record_format invenio
spelling cern-15160762019-09-30T06:29:59Zdoi:10.1109/TASC.2012.2228292http://cds.cern.ch/record/1516076engFleiter, JSitko, MBallarino, AAnalytical Formulation of Ic Dependence on Torsion of YBCO and BSCCO ConductorsAccelerators and Storage RingsThe behavior of HTS tapes under torsion is of key importance for the definition of the allowable twist during cabling activity. In this paper, we report on the elaboration of selfconsistent analytical expressions of Ic dependence on twist pitch for YBCO and BSCCO (2223) conductors. The computed expressions are validated with the results of a series of tests performed at 77 K and in self-field with a purpose-built setup. The Ic was observed to be reduced to 95% of the unstrained value for twist pitches of 114 mm for BSCCO tapes, and 80–90 mm for YBCO tapes. The reduction of performance was identified to be caused mainly by irreversible degradation of Ic at the tapes edges. At lower temperatures, a slightly lower sensitivity to twist is expected.CERN-ATS-2013-028oai:cds.cern.ch:15160762013-02-14
spellingShingle Accelerators and Storage Rings
Fleiter, J
Sitko, M
Ballarino, A
Analytical Formulation of Ic Dependence on Torsion of YBCO and BSCCO Conductors
title Analytical Formulation of Ic Dependence on Torsion of YBCO and BSCCO Conductors
title_full Analytical Formulation of Ic Dependence on Torsion of YBCO and BSCCO Conductors
title_fullStr Analytical Formulation of Ic Dependence on Torsion of YBCO and BSCCO Conductors
title_full_unstemmed Analytical Formulation of Ic Dependence on Torsion of YBCO and BSCCO Conductors
title_short Analytical Formulation of Ic Dependence on Torsion of YBCO and BSCCO Conductors
title_sort analytical formulation of ic dependence on torsion of ybco and bscco conductors
topic Accelerators and Storage Rings
url https://dx.doi.org/10.1109/TASC.2012.2228292
http://cds.cern.ch/record/1516076
work_keys_str_mv AT fleiterj analyticalformulationoficdependenceontorsionofybcoandbsccoconductors
AT sitkom analyticalformulationoficdependenceontorsionofybcoandbsccoconductors
AT ballarinoa analyticalformulationoficdependenceontorsionofybcoandbsccoconductors

Ejemplares similares