Energy Confinement Scaling Predictions for the Stabilized Tandem Mirror
Energy Confinement Scaling Predictions for the Stabilized Tandem Mirror
复制标题
稳定串联镜的能量限制尺度预测
DOI：
10.13182/fst07-a1307
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发表时间：
2007
影响因子：
1.1
通讯作者：
H. Berk
中科院分区：
文献类型：
--
作者：
J. Pratt;W. Horton;H. Berk
串行镜中无环向曲率和相对较弱的内部平行电流使系统具有良好的稳定性和输运特性。伽马-10实验表明，剪切等离子体旋转通过控制径向位势分布抑制了湍流径向损失。伽马-10的最新成就包括3keV离子限制势和Te≥800keV。伽马-10实验的总能量限制时间超过了环形装置中相应的经验限制时间一个数量级。在伽马-10中达到的温度下，最终损耗率τp≃100ms，因此径向损失决定τE，正如串联式镜像反应堆设计中所预期的那样。用玻姆标度、回转玻姆标度和电子温度梯度(ETG)标度得到的径向约束时间的漂移波结果表明，串联反射镜的径向漂移波输运形式与环形器件中的漂移波径向输运形式有本质上的不同。分析了脉动静电势和磁场扰动下伽马-10的漂移波本征模。
The absence of toroidal curvature and the relatively weak internal parallel currents in a tandem mirror gives the system favorable stability and transport properties. GAMMA-10 experiments demonstrate that sheared plasma rotation suppresses turbulent radial losses through control of the radial potential profiles. Recent achievements of the GAMMA-10 include 3 keV ion confinement potentials and Te ≥ 800 eV. Total energy confinement times for the GAMMA-10 experiment exceed by an order of magnitude the corresponding empirical confinement times in toroidal devices. At the temperatures achieved in the GAMMA-10, the end loss rate τp ≃ 100 ms so that radial losses determine τE, as intended in tandem mirror reactor designs. Drift-wave results on radial confinement times developed using Bohm, gyro-Bohm, and electron temperature gradient (ETG) scalings imply that the tandem mirror has a qualitatively different form of drift-wave radial transport from that in toroidal devices. Drift-wave eigenmodes for the GAMMA-10 are analyzed for the fluctuating electrostatic potential and magnetic perturbations.