Super-X divertors and high power density fusion devices
Super-X divertors and high power density fusion devices
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DOI：
10.1063/1.3110984
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发表时间：
2009-04
影响因子：
2.2
通讯作者：
P. Valanju;M. Kotschenreuther;S. Mahajan;J. Canik
中科院分区：
文献类型：
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作者：
P. Valanju;M. Kotschenreuther;S. Mahajan;J. Canik
提出了超X偏滤器(SXD)，这是对偏滤器磁几何结构的一种强健的轴对称重新设计，可以使环形聚变装置的核心功率密度增加五倍。由于极向线圈和标准偏滤器的电流变化很小，SXD允许在环形场线圈内实现最大的偏滤器板半径。与所有仅使用焊剂膨胀的方法(例如，靠近主X点的平板、平板倾斜、X偏滤器和雪花)相比，这增加了等离子体润湿面积2-3倍，降低了平行热流，从而降低了平板上的等离子体温度，并将连接长度增加了2-5倍。讨论了由SXD实现的高功率密度聚变装置的例子；最有前景的近期装置是一种100兆瓦的模块化紧凑型聚变中子源“电池”，小到足以装进传统的裂变毯子中。
The Super-X Divertor (SXD), a robust axisymmetric redesign of the divertor magnetic geometry that can allow a fivefold increase in the core power density of toroidal fusion devices, is presented. With small changes in poloidal coils and currents for standard divertors, the SXD allows the largest divertor plate radius inside toroidal field coils. This increases the plasma-wetted area by 2–3 times over all flux-expansion-only methods (e.g., plate near main X point, plate tilting, X divertor, and snowflake), decreases parallel heat flux and hence plasma temperature at plate, and increases connection length by 2–5 times. Examples of high-power-density fusion devices enabled by SXD are discussed; the most promising near-term device is a 100 MW modular compact fusion neutron source “battery” small enough to fit inside a conventional fission blanket.