Adiabatic normal zone development in MgB2 superconductors


Weeren, H. van and Eijnden, N.C. van den and Wessel, W.A.J. and Lezza, P. and Schlachter, S.I. and Goldacker, W. and Dhallé, M. and Ouden, A. den and Haken, B. ten and Kate, H.H.J. ten (2005) Adiabatic normal zone development in MgB2 superconductors. IEEE Transactions on Applied Superconductivity, 15 (2, par). pp. 1667-1670. ISSN 1051-8223

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Abstract:A-priori knowledge of the normal zone development in MgB/sub 2/ conductors is essential for quench protection of applications. Therefore the normal zone propagation in a monofilament MgB/sub 2//Fe conductor under near-adiabatic conditions at 4.2 K has been measured and simulated. The results show normal zone propagation velocities up to several meters per second. In addition, by including the voltage-current relation into the computational model, the influence of the n-value on the normal zone propagation is determined. The simulations show that lower n-values suppress the normal zone propagation velocity due to lower heat generation in the MgB/sub 2/ filaments.
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Copyright:© 2005 IEEE
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Metis ID: 227461