Analysis of the Current Distribution in the ITER CS-Insert Model Coil Conductor by Self Field Measurements

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Abstract

Non-uniformities in the paths of the currents in a cable-in-conduit conductor (CICC), resistive or inductive, will result into an unbalanced current distribution. The current nonuniformity may affect the performance of a magnet system and it is therefore essential to evaluate this phenomenon. The current distribution in the Central Solenoid Insert Coil (CSIC) from the Central Solenoid Model Coil (CSMC) experiment is reconstructed from the four Hall-sensor voltages at the top and bottom joint of the CSIC. Four Hall sensors are used, near both joints at the extremities of the cable, to measure the self-field of the conductor. The inverse identification problem is solved in order to find the currents that match as close as possible to the set of measured data. Solutions are found for the current amplitudes in the six petals of the cable from the set of measurements of the tangential field component. Differences in the petal currents are found which rate up to a factor of two.
Original languageUndefined
Pages (from-to)1675-1679
Number of pages5
JournalIEEE transactions on applied superconductivity
Volume12
Issue number1
DOIs
Publication statusPublished - 2002

Keywords

  • IR-43494
  • METIS-206759

Cite this

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title = "Analysis of the Current Distribution in the ITER CS-Insert Model Coil Conductor by Self Field Measurements",
abstract = "Non-uniformities in the paths of the currents in a cable-in-conduit conductor (CICC), resistive or inductive, will result into an unbalanced current distribution. The current nonuniformity may affect the performance of a magnet system and it is therefore essential to evaluate this phenomenon. The current distribution in the Central Solenoid Insert Coil (CSIC) from the Central Solenoid Model Coil (CSMC) experiment is reconstructed from the four Hall-sensor voltages at the top and bottom joint of the CSIC. Four Hall sensors are used, near both joints at the extremities of the cable, to measure the self-field of the conductor. The inverse identification problem is solved in order to find the currents that match as close as possible to the set of measured data. Solutions are found for the current amplitudes in the six petals of the cable from the set of measurements of the tangential field component. Differences in the petal currents are found which rate up to a factor of two.",
keywords = "IR-43494, METIS-206759",
author = "Arend Nijhuis and Y. Ilyin and {ten Kate}, {Herman H.J.}",
year = "2002",
doi = "10.1109/TASC.2002.1018729",
language = "Undefined",
volume = "12",
pages = "1675--1679",
journal = "IEEE transactions on applied superconductivity",
issn = "1051-8223",
publisher = "IEEE",
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}

Analysis of the Current Distribution in the ITER CS-Insert Model Coil Conductor by Self Field Measurements. / Nijhuis, Arend; Ilyin, Y.; ten Kate, Herman H.J.

In: IEEE transactions on applied superconductivity, Vol. 12, No. 1, 2002, p. 1675-1679.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Analysis of the Current Distribution in the ITER CS-Insert Model Coil Conductor by Self Field Measurements

AU - Nijhuis, Arend

AU - Ilyin, Y.

AU - ten Kate, Herman H.J.

PY - 2002

Y1 - 2002

N2 - Non-uniformities in the paths of the currents in a cable-in-conduit conductor (CICC), resistive or inductive, will result into an unbalanced current distribution. The current nonuniformity may affect the performance of a magnet system and it is therefore essential to evaluate this phenomenon. The current distribution in the Central Solenoid Insert Coil (CSIC) from the Central Solenoid Model Coil (CSMC) experiment is reconstructed from the four Hall-sensor voltages at the top and bottom joint of the CSIC. Four Hall sensors are used, near both joints at the extremities of the cable, to measure the self-field of the conductor. The inverse identification problem is solved in order to find the currents that match as close as possible to the set of measured data. Solutions are found for the current amplitudes in the six petals of the cable from the set of measurements of the tangential field component. Differences in the petal currents are found which rate up to a factor of two.

AB - Non-uniformities in the paths of the currents in a cable-in-conduit conductor (CICC), resistive or inductive, will result into an unbalanced current distribution. The current nonuniformity may affect the performance of a magnet system and it is therefore essential to evaluate this phenomenon. The current distribution in the Central Solenoid Insert Coil (CSIC) from the Central Solenoid Model Coil (CSMC) experiment is reconstructed from the four Hall-sensor voltages at the top and bottom joint of the CSIC. Four Hall sensors are used, near both joints at the extremities of the cable, to measure the self-field of the conductor. The inverse identification problem is solved in order to find the currents that match as close as possible to the set of measured data. Solutions are found for the current amplitudes in the six petals of the cable from the set of measurements of the tangential field component. Differences in the petal currents are found which rate up to a factor of two.

KW - IR-43494

KW - METIS-206759

U2 - 10.1109/TASC.2002.1018729

DO - 10.1109/TASC.2002.1018729

M3 - Article

VL - 12

SP - 1675

EP - 1679

JO - IEEE transactions on applied superconductivity

JF - IEEE transactions on applied superconductivity

SN - 1051-8223

IS - 1

ER -