Investigation of twisted stacked-tape cable conductor

Takayasu, M.; Minervini, J.V.; Bromberg, L.; Rudziak, M.K.; Wong, Terence Kin Shun

doi:10.1063/1.4712106

Cited by 22 publications

(21 citation statements)

References 1 publication

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“…Also a conductor should have proper stabilizer to protect from abnormal disturbances such as quenching. For this purpose various conductors have been proposed using copper and aluminum formers [5]- [7].…”

Section: Scale-up Conductormentioning

confidence: 99%

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Present Status and Recent Developments of the Twisted Stacked-Tape Cable Conductor

Takayasu

Chiesa

Allen

et al. 2016

IEEE Trans. Appl. Supercond.

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High magnetic field performance of a 40-tape Twisted Stacked-Tape Cable (TSTC) conductor made of 4 mm width, 0.1 mm thick REBCO tapes was successfully tested. The critical current was 6.0 kA with the n-value of 35 at 4.2 K with a background field of 17 T. No-cyclic load effect was observed between 10 T and 17 T with the maximum Lorentz load of 102 kN/m. Various issues such as sample length, non-uniformity of termination resistances, soldered joint of a coated tape cable with regards to a TSTC conductor are discussed. Large-scale conductor designs of various scalable TSTC conductors are discussed taking into account current densities and stabilizers.

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Section: Scale-up Conductormentioning

confidence: 99%

“…TSTC conductors have been fabricated by several methods, including sheathing the tape stack with copper strips and embedding the stack in single and multiple helical grooves machined on a circular rod. In the latter configuration, an untwisted stacked-tape cable or a twisted stacked-tape cable can be embedded in each groove [5].…”

Section: Introductionmentioning

confidence: 99%

Present Status and Recent Developments of the Twisted Stacked-Tape Cable Conductor

Takayasu

Chiesa

Allen

et al. 2016

IEEE Trans. Appl. Supercond.

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“…If it is twisted by twist angle φ, MN converses to into M'N'. The twist strain of the tape is calculated by [5].…”

Section: Twisting Characteristic Analysismentioning

confidence: 99%

Twisting characterization of 2G HTS tapes

Wang

Hasegawa

2015

2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)

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In recent years, commercialization of the second generation high temperature superconducting (2G HTS) tape has been realized and widely used in development of various electronic device applications. This paper emphases on the experimental research of twisting properties of 2G HTS tape at 77 K, self-field. Geometric deformable model is firstly established to analyze the twist strain of the single tape. Mechanical properties under different twisting pitches are experimentally carried out by measuring the critical current I c . Consequently, the minimum twisting pitch is determined. The results can provide a useful reference for research and development applications of 2G HTS tapes.

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“…Twisted Stacked-Tape Cables (TSTC) are being developed at the Massachusetts Institute of Technology, USA [11][12][13][14][15] and at the Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Italy [16].…”

Section: High Temperature Superconductor Cable Conceptsmentioning

confidence: 99%

Temperature-and field dependent characterization of a twisted stacked-tape cable

Barth

Takayasu

Bagrets

et al. 2015

Supercond. Sci. Technol.

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The Twisted Stacked-Tape Cable (TSTC) is one of the major high temperature superconductor cable concepts combining scalability, ease of fabrication and high current density making it a possible candidate as conductor for large scale magnets. To simulate the boundary conditions of such a magnets as well as the temperature dependence of Twisted Stacked-Tape Cables a 1.16 m long sample consisting of 40, 4 mm wide SuperPower RE BCO tapes is characterized using the "FBI" (force -field -current) superconductor test facility of the Institute for Technical Physics (ITEP) of the Karlsruhe Institute of Technology (KIT). In a first step, the magnetic background field is cycled while measuring the current carrying capabilities to determine the impact of Lorentz forces on the TSTC sample performance. In the first field cycle, the critical current of the TSTC sample is tested up to 12 T. A significant Lorentz force of up to 65.6 kN m −1 at the maximal magnetic background field of 12 T result in a 11.8 % irreversible degradation of the current carrying capabilities. The degradation saturates (critical cable current of 5.46 kA at 4.2 K and 12 T background field) and does not increase in following field cycles. In a second step, the sample is characterized at different background fields (4 -12 T) and surface temperatures (4.2 -37.8 K) utilizing the variable temperature insert of the "FBI" test facility. In a third step, the performance along the length of the sample is determined at 77 K, self-field. A 15 % degradation is obtained for the central part of the sample which was within the high field region of the magnet during the in-field measurements.

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Investigation of twisted stacked-tape cable conductor

Cited by 22 publications

References 1 publication

Present Status and Recent Developments of the Twisted Stacked-Tape Cable Conductor

Present Status and Recent Developments of the Twisted Stacked-Tape Cable Conductor

Twisting characterization of 2G HTS tapes

Temperature-and field dependent characterization of a twisted stacked-tape cable

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