Analysis on the balance and stability of dipole field of superconducting floating ring of CAT-1
The Tianhuan One is the first magnetically-confined plasma device in China using a magnetically floating dipole field magnet.According to the overall objectives and design requirements of the CAT-1(China Astro Torus-1)device,a sim-plified linear current model was used to analyze and calculate the stability of the floating magnet based on methods such as vector magnetic field,mechanical balance and dynamics.The design parameters of the floating magnet,levitation coil,and Tilt-Slider-Rotation coil in the device were given,including the overall size,spatial position and layout,current,weight,characteristic stability performance and their relationship.The results show that the optimal value of the levitation coil radius is 1.7 m and the corresponding current is 3.49 kA for the design goals of the floating magnet with the weight of 1 200 kg,current of 5 MA and sus-pension height of 2.0 m.In order to achieve effective resistance and control of the floating magnet offset movement,the working area near the balance point should be limited to|Δz|＜100 mm,|Δer|＜50 mm and|Δα|＜π/24.
CAT-1 deviceFloatingDipole fieldSuperconducting ringBalance and stability
王亚林、刘云辉、张国书、杜俊杰、杨志明、龚宇东、Yang Shuran
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东华理工大学机械与电子工程学院,南昌 330013
东华理工大学核科学与工程学院,南昌 330013
School of Nuclear Science and Engineering,East China University of Technology,Nanchang 330013,China
NETL
NSTL
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