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- W2733506596 abstract "In previous works we presented an original method for the characterization of superconducting tapes and wires from electrical measurements on a test coil. The principle was to measure the voltage-current characteristics of a coil for several values of an external applied flux density (by permanent magnets). A computer program then allows finding parameters of a model of the E(J,B) law that best fit the experimental curves.The advantage of this method is to obtain the characteristics of the superconductor in its future conditions of use i.e. it is wound. However, the use of a model requires having an a priori knowledge about its behavior. We present here how we modified this method in order to avoid the use of a model. The characteristics are adjusted point-by-point and a linear interpolation is performed between each of them. The increase in the number of parameters to determine led us to use a simulated annealing algorithm to perform minimization. The obtained results (Jc(B) and n(B) characteristics) are consistent with measurements made previously. However, a slight degradation of the characteristics is observed at very low magnetic fields. This behavior is, so far, not yet explained." @default.
- W2733506596 created "2017-07-14" @default.
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- W2733506596 date "2014-08-10" @default.
- W2733506596 modified "2023-09-25" @default.
- W2733506596 title "Model-less characterization of superconducting tapes or wires from electrical measurements on a coil" @default.
- W2733506596 hasPublicationYear "2014" @default.
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