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Electromagnetic analysis of ITER generic equatorial port plug designs during three plasma current disruption cases
Authors:J. Guirao,E. Rodrí  guezJ. Ordieres,M.F. CabanasC.H. Rojas Garcí  a
Affiliation:a Numerical Technologies, S. L., Marqués de San Esteban No. 52, 33206 Gijón, Spain
b Department of Mechanical Engineering, University of Oviedo, Campus de Viesques, 33203 Gijón, Spain
c Electrical Engineering Department, University of Oviedo, Campus de Viesques, 33203 Gijón, Spain
Abstract:Electromagnetic phenomena due to plasma current disruptions are the cause for the main mechanical operation loads over the ITER equatorial level port plug structures.This paper presents a detailed finite element simulation and analysis of the transient electromagnetic effects of three different plasma current disruption cases over three designs of diagnostic shielding module (DSM) structure. The DSMs are contained into and supported by the generic equatorial port plug (GEPP) analyzed structure.The three plasma disruption cases studied were: major disruption upwards linear decay in 36 ms (MD UP LIN36), vertical displacements events, upwards and downwards linear decay in 36 ms (VDE UP LIN36 and VDE DW LIN36). A detailed analysis for GEPP structure and three DSM-first wall (FW) designs (horizontal and vertical drawers and monoblock) is also presented in order to extract the Eddy current distribution on these devices and thus the resultant electromagnetic forces and moments acting on them.
Keywords:Electromagnetic   Transient analysis   Equatorial port plug   Finite element   ITER
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