PPPL-4931
Performance Evaluation of K-DEMO Cable-in-conduit Conductors Using the Florida Electro-Mechanical Cable Model
Authors: Yuhu Zhai, et. al.
Abstract:
The United States ITER Project Office (USIPO) is
responsible for design of the Toroidal Field (TF) insert coil,
which will allow validation of the performance of significant
lengths of the conductors to be used in the full scale TF coils in
relevant conditions of field, current density and mechanical
strain. The Japan Atomic Energy Agency (JAEA) will build the
TF insert which will be tested at the Central Solenoid Model Coil
(CSMC) Test facility at JAEA, Naka, Japan.
Three dimensional mathematical model of TF Insert was
created based on the initial design geometry data, and included
the following features: orthotropic material properties of
superconductor material and insulation; external magnetic field
from CSMC, temperature dependent properties of the materials;
pre-compression and plastic deformation in lap joint. Major
geometrical characteristics of the design were preserved
including cable jacket and insulation shape, mandrel outline, and
support clamps and spacers.
The model is capable of performing coupled structural,
thermal, and electromagnetic analysis using ANSYS. Numerical
simulations were performed for room temperature conditions;
cool down to 4K, and the operating regime with 68kA current at
11.8 Tesla background field. Numerical simulations led to the
final design of the coil producing the required strain levels on the
cable, while simultaneously satisfying the ITER magnet
structural design criteria.
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Submitted to: 23rd International Conference on Magnetic Technology, Boston, Ma. (July 14-19, 2013)
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Download PPPL-4931 (pdf KB pp)
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