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Simulation of EAST vertical displacement events by tokamak simulation code

Qinglai Qiu, Bingjia Xiao, Yong Guo, Lei Liu, Zhe Xing, D.A. Humphreys2016年被引用 12Nuclear FusionIF 3出版社

Vertical instability is a potentially serious hazard for elongated plasma. In this paper, the tokamak simulation code (TSC) is used to simulate vertical displacement events (VDE) on the experimental advanced superconducting tokamak (EAST). Key parameters from simulations, including plasma current, plasma shape and position, flux contours and magnetic measurements match experimental data well. The growth rates simulated by TSC are in good agreement with TokSys results. In addition to modeling the free drift, an EAST fast vertical control model enables TSC to simulate the course of VDE recovery. The trajectories of the plasma current center and control currents on internal coils (IC) fit experimental data well.

日本語訳

垂直不安定性は、細長いプラズマにとって潜在的に深刻な危険源である。本論文では、トカマクシミュレーションコード(TSC)を用いて、実験先進超伝導トカマク(EAST)における垂直変位事象(VDE)をシミュレーションする。シミュレーションから得られた主要パラメータ、すなわちプラズマ電流、プラズマ形状と位置、磁束等高線、および磁気計測は実験データとよく一致する。TSCによってシミュレーションされた成長率はTokSysの結果と良好に一致する。自由漂移のモデル化に加えて、EAST高速垂直制御モデルにより、TSCはVDE回復の過程をシミュレーションすることが可能となる。プラズマ電流中心の軌跡および内部コイル(IC)上の制御電流は、実験データとよく適合する。

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EASTVertical displacement
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