The Results of Russian ITER TF Conductor Sample Test in SULTAN

The Results of Russian ITER TF Conductor Sample Test in SULTAN,10.1109/TASC.2010.2040950,IEEE Transactions on Applied Superconductivity,A. Shikov,V. P

The Results of Russian ITER TF Conductor Sample Test in SULTAN   (Citations: 2)
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In the framework of the ITER Qualification Tests the Russian sample RFTF2 was tested in SULTAN facility. The sample is made of two identical ITER TF-type cable-in-conduit conductor sections. Bronze route strands were used for the conductor fabrication. The main characteristics of the conductor and the strand are presented as well as the sample assembly details. The test was performed in accordance with the ITER International Organization specified program. In order to evaluate the conductor performance, the current sharing temperature was measured at specified electromagnetic load cycling steps. Few voltage-current characteristics were measured with the aim of n-value estimation. Both conductor sections of the RFTF2 sample showed identical performance: the current sharing temperature is 6.4 K, that not only satisfies, but substantially exceeds ITER requirement of 5.7 K. The tests of RFTF-2 conductor sample showed that electromagnetic cyclic load as well as warm-up had negligible effect on the conductor performance. The results of the SULTAN sample test are compared with strand performance.
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    • ...Such a behavior is shown by samples like EU-AltTF, left leg [24] and by the Russian ITER TF RFTF2 [25], which exhibits no degradation with cyclic loading up to 600 cycles and very small effect of warm-up on . For this sample the n-index values are 12 and 12.5 for the left and the right leg respectively...
    • ...The same happens for the SCH Hybrid HF magnets [24], [25], for which after all the 700 cycles, nominal and overloading, the current sharing temperature reduced only slightly by 2%. The n-index between the strand and the CICC, on the contrary, are different by a large amount; at the same operative conditions the n-index value of a single OST-dipole strand is about 25, in comparison to the less than 10 value measured in the CICC...

    C. Fiamozzi Zignaniet al. The Effect of Strand Bending on the Voltage-Current Characteristic of ...

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