The Results of Russian ITER TF Conductor Sample Test in SULTAN

Author

Shikov, A. ; Pantsyrny, V. ; Vorobieva, A. ; Vasilyev, R. ; Kozlenkova, N. ; Abramushin, K. ; Sytnikov, V. ; Taran, A. ; Rychagov, A. ; Bruzzone, P. ; Stepanov, B.

Author_Institution

Bochvar Inst. of Inorg. Mater. (VNIINM), Moscow, Russia

Volume

20

Issue

3

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

462

Lastpage

465

Abstract

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.

Keywords

Tokamak devices; fusion reactor design; fusion reactor materials; plasma toroidal confinement; superconducting materials; ITER TF-type cable-in-conduit conductor sections; ITER international organization specified program; ITER qualification tests; RFTF2 sample; Russian ITER TF conductor sample test; SULTAN facility; bronze route Nb₃Sn strands; conductor fabrication; conductor performance; current sharing temperature; electromagnetic load cycling steps; n-value estimation; voltage-current characteristics; ${rm Nb}_{3}{rm Sn}$ strand; Cable in conduit conductor; current sharing temperature;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2040950

Filename

5422831