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http://dx.doi.org/10.9714/psac.2019.21.1.001

Pulsed field magnetization of multi-turn short-circuited stabilized double pancake HTS coil  

Korotkov, V.S. (National Research Center "Kurchatov Institute")
Krasnoperov, E.P. (National Research Center "Kurchatov Institute")
Brazhnik, P.A. (National Research Center "Kurchatov Institute")
Kartamyshev, A.A. (National Research Center "Kurchatov Institute")
Bishaev, A.M. (Russian Technological University(MIREA))
Kozinsteva, M.V. (Russian Technological University(MIREA))
Publication Information
Progress in Superconductivity and Cryogenics / v.21, no.1, 2019 , pp. 1-5 More about this Journal
Abstract
The pulsed field magnetization of the short-circuited soldered double pancake coil made of stabilized commercial high-Tc superconductor (HTS) tape is experimentally studied. The evolution of the shielding current induced by the pulsed field and the trapped field after the pulsed magnetization was measured at 77 K. It is shown that the trapped field in the coil is close to the value reached in the field cooling process and reduces weakly at 5-fold increasing of pulsed field amplitude. The current relaxation at t~2 ms after the pulse is defined by the current sharing between the tape's copper coating and the $YBa_2Cu_3O_{7-d}$ layer. In the intermediate time scale (1 s < t < 100 s) the flux creep in HTS layer dominates. At t > 100 s the current's relaxation is defined by the resistance of soldered joint between tapes.
Keywords
High-temperature superconductivity; pulsed field magnetization; trapped field magnets;
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