Desgn of a 20-MJ superconducting ohmic-heating coil. [NbTi and Nb/sub 3/Sn]

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Conceptual designs of 20-MJ superconducting coils which were developed to demonstrate the feasibility of an ohmic-heating system were discussed. The superconductor materials were NbTi and Nb/sub 3/Sn for the pool boil and forced-flow cooling, respectively. The coils were designed to be cryostable for bipolar operation from +7 to -7 tesla maximum field within one second. The structural design addresses the distribution of structure and structural materials used in the pulsed field environment. The cyclic stresses anticipated and the fatigue limits of the structural materials were examined in view of the operating life of the coil. The coils were designed to ... continued below

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Pages: 7

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Singh, S.K.; Murphy, J.H.; Janocko, M.A.; Haller, H.E.; Litz, D.C.; Eckels, P.W. et al. January 1, 1979.

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Conceptual designs of 20-MJ superconducting coils which were developed to demonstrate the feasibility of an ohmic-heating system were discussed. The superconductor materials were NbTi and Nb/sub 3/Sn for the pool boil and forced-flow cooling, respectively. The coils were designed to be cryostable for bipolar operation from +7 to -7 tesla maximum field within one second. The structural design addresses the distribution of structure and structural materials used in the pulsed field environment. The cyclic stresses anticipated and the fatigue limits of the structural materials were examined in view of the operating life of the coil. The coils were designed to generate the flux swings while simultaneously meeting the limitations imposed by cooling, insulation, current density and the stresses in the materials. Both the pool and forced cooled conductors have the same criterion for cryostability, i.e., the conductor must return to the superconducting state from an initial temperature of 20/sup 0/K while the full transport current is flowing through the conductor.

Physical Description

Pages: 7

Notes

Dep. NTIS, PC A02/MF A01.

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  • 8. symposium on engineering problems of fusion research, San Francisco, CA, USA, 13 Nov 1979

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  • Report No.: LA-UR-79-3260
  • Report No.: CONF-791102-52
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5603529
  • Archival Resource Key: ark:/67531/metadc1093842

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  • January 1, 1979

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • March 9, 2018, 5:55 p.m.

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Singh, S.K.; Murphy, J.H.; Janocko, M.A.; Haller, H.E.; Litz, D.C.; Eckels, P.W. et al. Desgn of a 20-MJ superconducting ohmic-heating coil. [NbTi and Nb/sub 3/Sn], article, January 1, 1979; Pittsburgh, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc1093842/: accessed June 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.