Loss and Thermal Analysis of a High Temperature Superconducting Central Solenoid for Tokamak

IF 1.7 3区物理与天体物理 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-12 DOI:10.1109/TASC.2025.3540825

Mianjun Xiao;Peng Song;Yulong Liu;Liangjun Shao;Ziyang Xu;Timing Qu

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引用次数: 0

Abstract

During operation, the central solenoid (CS) magnet in the Tokamak undergoes rapid charging-discharging cycles, resulting in significant AC losses. In this study, a loss and thermal analysis of a high temperature superconducting (HTS) CS magnet during operation was conducted. The magnet consists of 6 sub-magnets, each with 19 double pancakes (DPs), which are cooled to 20 K by helium gas in the cooling plates. The T-A model coupled with the equivalent circuit model was employed to calculate the hysteresis and coupling losses in the REBCO stacks. Additionally, eddy current losses in the copper layer of the REBCO tapes and the magnet structure were evaluated through the analytical formula and Finite Element Method (FEM) model under the uniform current assumption, respectively. A thermal model incorporating helium gas flow was developed to predict the temperature rise within the CS magnet. AC losses calculated during operation were integrated into the thermal model as heat sources, enabling quantitative analysis of the magnet's temperature evolution.

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来源期刊

IEEE Transactions on Applied Superconductivity 工程技术-工程：电子与电气

CiteScore

3.50

自引率

33.30%

发文量

650

审稿时长

2.3 months

期刊介绍： IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Large scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.