Test Results of Three Poloidal Field Superconducting Samples in SULTAN

Stepanov, B.; Bruzzone, P.; Wesche, R.; Turtù, S.; Corato, V.; Decool, P.; Devred, A.; Bessette, D.; Vostner, A.; Boutboul, T.; Lelekhov, S.A.; Wang, Yu

doi:10.1109/tasc.2011.2176704

Cited by 11 publications

(6 citation statements)

References 7 publications

(8 reference statements)

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“…This is a peculiarity of RF TF CICC and most probably occurs due to the unique strand layout and specific cabling procedure. The test results of the PF1&6 samples confirmed stability of the conductor electromagnetic properties before and after the cycling mechanical load [8].…”

Section: Tf and Pf Conductorsmentioning

confidence: 54%

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Progress with the ITER project activity in Russia

Krasilnikov¹,

Abdyuhanov

Aleksandrov³

et al. 2015

Nucl. Fusion

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Due to the development of the ITER project, the requirements of the technical parameters of the ITER systems were more precisely and practically determined to be at higher levels. The essential increase of the ITER system characteristics happened recently. A number of prototypes were manufactured and tests were carried out. The results of the development and manufacture of 25 ITER systems, subject to the Russian Federation's obligations in the ITER project, are described.

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Section: Tf and Pf Conductorsmentioning

confidence: 54%

“…The main dimensions of the samples are approximately the same. The results of the tests of all samples were sufficient and met ITER requirements [6][7][8]. However the results of the TF samples tests were quite unexpected because no current sharing temperature (T cs ) degradation was observed [6,7].…”

Section: Tf and Pf Conductorsmentioning

confidence: 60%

Progress with the ITER project activity in Russia

Krasilnikov¹,

Abdyuhanov

Aleksandrov³

et al. 2015

Nucl. Fusion

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“…In other large NbTi CICC [6], unstable transition with is observed for current larger than 25 kA Trasek, stable transition is observed for current in excess of 90 kA although the current density and self-field gradient are much larger than in the ITER conductors. This excellent performance is partly due to the SnAg5 strand coating, which reduces the crossover resistance and promotes the inter-strand current sharing.…”

Section: DC Resultsmentioning

confidence: 96%

Test Results of a 100 kA NbTi CICC

Bruzzone

Stepanov

Wesche

et al. 2012

IEEE Trans. Appl. Supercond.

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For the secondary winding of the flux pump (superconducting transformer) of the EDIPO test facility at CRPP Villigen, a NbTi cable-in-conduit conductor (CICC) was designed at CRPP and procured at the industry. From a left section of the CICC a SULTAN sample, nicknamed TRASEK, has been assembled and tested.In the conductor design, high Cu:non-Cu ratio in the strand (no copper segregation), low void fraction and SnAg5 coating of the strand surface are selected to allow smooth current redistribution and enhance the take-off voltage. The DC tests are carried out before and after solder filling the sample termination and current sharing is observed up to 80 kA. Eventually, the DC conductor performance is limited by the self field of the sample in the U-bend region.In normal operation, the secondary coil of the transformer is not exposed to significant magnetic field sweeps. The AC loss is expected to be large according to the design choices (tin coating, low void fraction). The AC loss characterization in SULTAN includes over 400 load cycles.The pressure drop vs. mass flow rate is measured in SULTAN to complement the data base for friction factor of CICC's.

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“…To study the effect of electromagnetic loads, the strands were extracted from the sample of PFEU1 conductor, which was tested in the SULTAN facility [6].…”

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

“…For the measurements of RRR of strands taken from PFEU1 conductor sample [6] tested in the SULTAN, the strand samples were selected not only in different areas from the viewpoint of the magnetic field -high field zone (external field 6.4T) and low-field zone (external field 0.4T), but also from different locations in the cross section of the conductor. Particularly, the samples were taken from different petals of the cable, and for each petal -from its center, near the central cooling spiral, near the jacket (in the middle position) and in the corners of the petal from the jacket side.…”

Section: B Rrr After Testing At Sultanmentioning

confidence: 99%

Residual Resistances Ratio in NbTi Strands Extracted From the ITER PF1/6 Conductor Sample After SULTAN Tests

Fetisov

Polyakova

Kaverin

et al. 2015

IEEE Trans. Appl. Supercond.

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The residual resistance ratio (RRR) is an important parameter affecting the stability of superconductors and the quench protection properties of magnets. During the manufacture and testing of cable-in-conduit-conductors, RRR may change noticeably. Recently the RRR changes of Nb 3 Sn strands for conductors of the ITER toroidal coils have been studied during the manufacturing process, heat treatment and SULTAN testing. Here we present the similar study of RRR of Nb-Ti strands used for conductors of the ITER poloidal coils. RRRs of the strands were measured in as-received condition and at different stages of the PF conductor manufacturing. RRR of strands extracted from ITER PF conductor sample after electromagnetic and thermal cycling in the SULTAN test facility was also measured. For this purpose the strand samples were extracted from different locations in the cross-section of the PF conductor and from different positions along the axis after testing in the SULTAN. The results about the RRR change during the manufacturing process and after the SULTAN tests and also the details of experiments are presented and discussed.

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Test Results of Three Poloidal Field Superconducting Samples in SULTAN

Cited by 11 publications

References 7 publications

Progress with the ITER project activity in Russia

Progress with the ITER project activity in Russia

Test Results of a 100 kA NbTi CICC

Residual Resistances Ratio in NbTi Strands Extracted From the ITER PF1/6 Conductor Sample After SULTAN Tests

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