A new optimized quasi-helically symmetric configuration is described that has the desirable properties of improved energetic particle confinement, reduced turbulent transport by three-dimensional shaping and non-resonant divertor capabilities. The configuration presented in this paper is explicitly optimized for quasi-helical symmetry, energetic particle confinement, neoclassical confinement and stability near the axis. Post optimization, the configuration was evaluated for its performance with regard to energetic particle transport, ideal magnetohydrodynamic stability at various values of plasma pressure and ion temperature gradient instability induced turbulent transport. The effects of discrete coils on various confinement figures of merit, including energetic particle confinement, are determined by generating single-filament coils for the configuration. Preliminary divertor analysis shows that coils can be created that do not interfere with expansion of the vessel volume near the regions of outgoing heat flux, thus demonstrating the possibility of operating a non-resonant divertor.

中文翻译：

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推进准螺旋对称仿星器的物理基础

描述了一种新的优化的准螺旋对称配置，该配置具有改进的高能粒子约束、通过三维整形减少湍流传输和非共振偏滤器能力的理想特性。本文提出的配置针对准螺旋对称、高能粒子限制、新古典限制和轴附近的稳定性进行了明确优化。优化后，评估了该配置在高能粒子传输、各种等离子体压力值下的理想磁流体动力学稳定性和离子温度梯度不稳定性引起的湍流传输方面的性能。离散线圈对各种限制品质因数的影响，包括高能粒子限制，通过为配置生成单丝线圈来确定。初步偏滤器分析表明，可以创建不干扰传出热通量区域附近容器体积膨胀的线圈，从而证明操作非共振偏滤器的可能性。