Comparative Measurements of ITER Nb3Sn Strands between Two Laboratories

Jun Lu; Scott Hill; David McGuire; Keagan Dellinger; Arend Nijhuis; W. A. Wessel; H. J.G. Krooshoop; Kevin Chan; Nicolai Martovetsky

doi:10.1109/TASC.2017.2685502

Comparative Measurements of ITER Nb₃Sn Strands between Two Laboratories

Jun Lu^*, Scott Hill, David McGuire, Keagan Dellinger, Arend Nijhuis, W. A. Wessel, H. J.G. Krooshoop, Kevin Chan, Nicolai Martovetsky

^*Corresponding author for this work

Energy Materials Systems

Research output: Contribution to journal › Article › Academic › peer-review

3 Citations (Scopus)

Abstract

ITER Nb₃Sn strand quality verification tests require large quantities of precise measurements. Therefore, regular cross-checking between testing laboratories is critically important. In this paper, we present results from a cross-checking test of 140 samples between the National High Magnetic Field Laboratory, USA, and the University of Twente, The Netherlands. The tests comprise measurements at 4.2 K on critical current, residual resistance ratio, and hysteresis loss, while at room temperature the chromium layer thickness, Cu/non-Cu ratio, filament twist pitch, and diameter were determined. Our results show very good agreement between the two laboratories. The reasons for small random discrepancies are discussed.

Original language	English
Article number	7883860
Journal	IEEE transactions on applied superconductivity
Volume	27
Issue number	5
DOIs	https://doi.org/10.1109/TASC.2017.2685502
Publication status	Published - 1 Aug 2017

Keywords

Critical current
hysteresis loss
Nb3Sn
residual resistance ratio (RRR)
22/4 OA procedure

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10.1109/TASC.2017.2685502

comparativeFinal published version, 358 KBLicence: Taverne

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title = "Comparative Measurements of ITER Nb3Sn Strands between Two Laboratories",

abstract = "ITER Nb3Sn strand quality verification tests require large quantities of precise measurements. Therefore, regular cross-checking between testing laboratories is critically important. In this paper, we present results from a cross-checking test of 140 samples between the National High Magnetic Field Laboratory, USA, and the University of Twente, The Netherlands. The tests comprise measurements at 4.2 K on critical current, residual resistance ratio, and hysteresis loss, while at room temperature the chromium layer thickness, Cu/non-Cu ratio, filament twist pitch, and diameter were determined. Our results show very good agreement between the two laboratories. The reasons for small random discrepancies are discussed.",

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AU - Lu, Jun

AU - Hill, Scott

AU - McGuire, David

AU - Dellinger, Keagan

AU - Nijhuis, Arend

AU - Wessel, W. A.

AU - Krooshoop, H. J.G.

AU - Chan, Kevin

AU - Martovetsky, Nicolai

PY - 2017/8/1

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N2 - ITER Nb3Sn strand quality verification tests require large quantities of precise measurements. Therefore, regular cross-checking between testing laboratories is critically important. In this paper, we present results from a cross-checking test of 140 samples between the National High Magnetic Field Laboratory, USA, and the University of Twente, The Netherlands. The tests comprise measurements at 4.2 K on critical current, residual resistance ratio, and hysteresis loss, while at room temperature the chromium layer thickness, Cu/non-Cu ratio, filament twist pitch, and diameter were determined. Our results show very good agreement between the two laboratories. The reasons for small random discrepancies are discussed.

AB - ITER Nb3Sn strand quality verification tests require large quantities of precise measurements. Therefore, regular cross-checking between testing laboratories is critically important. In this paper, we present results from a cross-checking test of 140 samples between the National High Magnetic Field Laboratory, USA, and the University of Twente, The Netherlands. The tests comprise measurements at 4.2 K on critical current, residual resistance ratio, and hysteresis loss, while at room temperature the chromium layer thickness, Cu/non-Cu ratio, filament twist pitch, and diameter were determined. Our results show very good agreement between the two laboratories. The reasons for small random discrepancies are discussed.

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KW - residual resistance ratio (RRR)

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Comparative Measurements of ITER Nb₃Sn Strands between Two Laboratories

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Keywords

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