Stress and Thermal Analysis of the In-Vessel RMP Coils in HL-2M

A set of in-vessel resonant magnetic perturbation （RMP） coils for MHD instability suppression is proposed for the design of a HL-2M tokamak. Each coil is to be fed with a current of up to 5 kA, operated in a frequency range from DC to about I kHz. Stainless steel （SS） jacketed mineral insulated cabl...

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Bibliographic Details
Published in:Plasma science & technology 2013-09, Vol.15 (9), p.939-944
Main Author: 岑义顺 李强 丁永华 蔡立君 江嘉铭 李广生 刘仪
Format: Article
Language:English
Subjects:
Coils
Conductors (devices)
Design engineering
Instability
Insulation
Loads (forces)
Mathematical analysis
MHD不稳定性
RMP
Stresses
Thermal expansion
应力和
托卡马克装置
热分析
矿物绝缘电缆
线圈
船舶
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Summary:A set of in-vessel resonant magnetic perturbation （RMP） coils for MHD instability suppression is proposed for the design of a HL-2M tokamak. Each coil is to be fed with a current of up to 5 kA, operated in a frequency range from DC to about I kHz. Stainless steel （SS） jacketed mineral insulated cables are proposed for the conductor of the coils. In-vessel coils must withstand large electromagnetic （EM） and thermal loads. The support, insulation and vacuum sealing in a very limited space are crucial issues for engineering design. Hence finite element calculations are performed to verify the design, optimize the support by minimizing stress caused by EM forces on the coil conductors and work out the temperature rise occurring on the coil in different working conditions, the corresponding thermal stress caused by the thermal expansion of materials is evaluated to be allowable. The techniques to develop the in-vessel RMP coils, such as support, insulation and cooling, are discussed.
ISSN:1009-0630
DOI:10.1088/1009-0630/15/9/20