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A prototype of a superconducting magnet for a 170-GHz gyrotron

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Abstract

Within the framework of the “International Thermonuclear Experimental Reactor” (ITER) program, a prototype of a superconducting magnet for a 170-GHz gyrotron has been developed, manufactured, and tested. The operating induction value (7.1 T at the center of a 219-mm-diameter cold hole and 8.1 T on the winding) is reached at a current of 185.2 A. In the final version of the magnet, the required induction value was reached without aging. Special requirements are imposed on the distribution of the magnetic field along the axis, including an abrupt field decrease on both sides of the magnet. Axial forces are additionally taken by a special device. The magnet’s sections are wound with multifiber conductors based on niobium-tin and niobium-titanium alloys. Seventeen resistive shunts are provided for protecting sections during their transition to the normal state. The magnet is equipped with a device for removing a part of energy from the sections. Mechanical stresses in the magnet’s sections and the structure’s power elements have been measured during tests.

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Authors and Affiliations

  1. Kurchatov Institute Russian Research Centre, pl. Kurchatova 1, Moscow, 123182, Russia

    M. I. Surin, V. E. Keilin, S. M. Miklyaev & S. A. Shevchenko

Authors
  1. M. I. Surin
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  2. V. E. Keilin
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  3. S. M. Miklyaev
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  4. S. A. Shevchenko
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Additional information

Original Russian Text © M.I. Surin, V.E. Keilin, S.M. Miklyaev, S.A. Shevchenko, 2008, published in Pribory i Tekhnika Eksperimenta, 2008, No. 4, pp. 154–158.

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Surin, M.I., Keilin, V.E., Miklyaev, S.M. et al. A prototype of a superconducting magnet for a 170-GHz gyrotron. Instrum Exp Tech 51, 634–637 (2008). https://doi.org/10.1134/S0020441208040234

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  • DOI: https://doi.org/10.1134/S0020441208040234

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