Critical current versus strain measurement up to 21 T and 1000 A of long length superconducting wires and tapes

Seeber, B.; Uglietti, D.; Abächerli, V.; Bovier, P.-A.; Eckert, D.; Kübler, G.; Lezza, P.; Pollini, A.; Flükiger, R.
September 2005
Review of Scientific Instruments;Sep2005, Vol. 76 Issue 9, p093901
Academic Journal
A device has been developed to measure the critical current of long length superconductors under uniaxial strain up to 1000 A and up to 21 T. The latter is based on a modified Walters spring (WASP) where zero applied strain can be precisely controlled. The length of the investigated conductor is on the order of 1 m with a typical gauge length between the voltage taps of about 0.5 m. This facilitates the measurement of critical currents at an electric field criterion as low as 0.01 μV/cm, which is particularly important for superconductors to be used in magnets which are operated in the persistent mode. The operation of the WASP was simulated by finite element calculations indicating that the radial stress (contact pressure) of the superconductor is less than 5% of the axial stress. The performance of the probe is demonstrated for several Nb3Sn conductors with round and rectangular cross section, respectively, as well as for a Bi-2223 tape.


Related Articles

  • Tentative design and evaluation of a high-temperature superconducting generator. Kanamori, Yasuo; Yamada, Masato; Hasegawa, Kiyoshi; Nakamura, Hideyuki; Arata, Masanori; Nishimura, Mariko // Electrical Engineering in Japan;10/1/2002, Vol. 141 Issue 1, p1 

    Studies on superconducting generators have been carried out worldwide. Especially in Japan, it is worthy of attention that Super-GM led the national project concerning the successful development of the 70 MW-class superconducting generators. Low-temperature superconducting wires have been...

  • New generation of SN-fusing. Warner, Allan // Appliance Manufacturer;Sep98, Vol. 46 Issue 9, p29 

    Focuses on the use of Hot-Shoe fusing, a method of joining copper electrical conductors. Uses of Hot-Shoe fusing; Incorporation of a Thermal Monitor/Controller; Fusing of tang-type commutators.

  • Grounded conductors--Art. 200. Hartwell, Frederic P. // EC&M Electrical Construction & Maintenance;Feb99, Vol. 98 Issue 2, p8 

    Discusses grounded electric conductors in question and answer form. Permissible methods for selecting number eight grounded conductors; Permissible methods for identifying number three grounded conductors; Using a number ten black wire as a grounded conductor.

  • Nexans coordinating a second-generation HTS project using coated conductors.  // Wire Journal International;Dec2004, Vol. 37 Issue 12, p13 

    Focuses on the coordination of the Super3C European project by Nexans for the development of a High Temperature Superconducting energy cable using coated conductors as current carrying elements. Worth of the project; Description of the coated conductors; Partners of the company for the project.

  • New Type of NB3Sn Fiber-Reinforced Superconductors for High-Field Pulsed Magnet and Effect of Thermal Stress. Arai, Kazuaki; Tateishi, Hiroshi; Umeda, Masaichi; Agatsuma, Ko // Electrical Engineering in Japan;6/1/1994, Vol. 114 Issue 3, p1 

    A new type of superconductor with high elastic modulus fibers is being developed for the application of high-field pulsed superconducting magnets called Fiber-Reinforced Superconductors (FRS). FRSs have great potential for the construction of a 15-T class pulses magnet with its size kept equal...

  • Splices and Terminations of Conductors. Holt, Mike // EC&M Electrical Construction & Maintenance;Jan2002, Vol. 101 Issue 1, p68 

    Focuses on the importance of splices and terminations in an electrical system. Rules set in the electric code concerning the installation of electrical equipment; Requirements for aluminum conductors; Discussion on wire-terminal rule.

  • Transmission Line TRANSIENTS.  // Electronics World;Jan2011, Vol. 117 Issue 1897, p26 

    The article provides an answer to a question of where does the negative charge come from that terminates the electric field between conductors when a voltage step travels down a transmission line guided by two conductors.

  • Limiting stable states of high-T superconductors in the alternating current modes. Romanovskii, Vladimir; Watanabe, Kazuo; Awaji, Satoshi // European Physical Journal B -- Condensed Matter;Aug2014, Vol. 87 Issue 8, p1 

    The limiting current-carrying capacity of high- T superconductor and superconducting tape has been studied in the alternating current states. The features that are responsible for their stable formation have been investigated under the conduction-cooled conditions when the operating peak values...

  • QUALITATIVE CALCULATION OF HEAT TRANSFER IN A CYLINDRICAL COMPOSITE CONDUCTOR. CUI, YING-MIN; WANG, YIN-SHUN; LV, GANG; GUAN, RONG-HUA // International Journal of Modern Physics B: Condensed Matter Phys;3/20/2013, Vol. 27 Issue 7, p-1 

    A two-dimensional numerical modeling has been developed to analyze the dynamic evolution of heat transfer in a cylindrical composite conductor . The model solves the transient heat equation coupled with current shift in and copper. The minimum quench energy and quench propagation velocity are...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics