...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nuclear fusion >Perspectives for the liquid lithium and tin targets in the Italian Divertor Test Tokamak (I-DTT) divertor
【24h】

Perspectives for the liquid lithium and tin targets in the Italian Divertor Test Tokamak (I-DTT) divertor

机译：意大利分流器测试托卡马克（I-DTT）分流器中液态锂和锡靶材的前景

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The behaviour of the scrape-off plasma of the projected Italian tokamakl-urr is analysed by means of the two-dimensional edge code TECXY for either Li or Sn as the liquid target material. A scan in the outer midplane separatrix density range n(e),(omp) approximate to (0.5-1.1) x 10(20) m(-3) is carried out for several power inputs into the scrape-off layer (SOL) up to a maximum of P-SOL = 35 MW. The radiative capability and peak load mitigation are higher for Sn than for Li, but only slightly so at high density, so that the entire density range can be explored with liquid Sn targets, unlike Li whose employment at low density and high power is questionable. However, if a ceiling to the Sn concentration is set for high core fusion performance, Sn mitigation at low density may drop below Li. Nonetheless, concerns about the Li option derive from the very large material consumption and from the fact that the main mechanism of impurity release is sputtering, which is outside the full control of the operator. Considering specifically the three main scenarios-low, medium and high density-at the maximum auxiliary power of 45 MW, operations are successful with Sn, whereas Li requires an additional impurity able to radiate in the core, except at the highest density. The snowflake plus configuration, compared with the standard single null, as a sample for advanced divertors, appears more suited to exploit the advantages of the liquid metal option. Concerning additional impurities, only Ar and Ne are considered at present. They can strongly help in reaching and studying deep detached conditions even at the maximum power, but are not essential for operations. Wide flexibility in designing the target refrigeration system is required to fully exploit its great potential.
机译：借助二维边缘代码TECXY，对Li或Sn作为液态目标材料，分析了所投射的意大利Tokamakl-urr刮除等离子体的行为。对输入到刮除层（SOL）的多个功率进行了外中平面分离层密度范围n（e），（omp）大约（0.5-1.1）x 10（20）m（-3）的扫描最高P-SOL = 35 MW。 Sn的辐射能力和峰值负载缓解能力比Li高，但在高密度条件下只有一点点提高，因此液态Li靶材可以探索整个密度范围，这与Li在低密度和高功率下使用存在疑问。但是，如果为高核聚变性能设定了Sn浓度的上限，则低密度下的Sn缓解可能会降至Li以下。尽管如此，人们对锂选择的担忧来自于非常大的材料消耗以及杂质释放的主要机理是溅射这一事实，而溅射是操作者无法完全控制的。特别考虑三种主要情况-低，中和高密度-在45兆瓦的最大辅助功率下，使用锡可以成功运行，而锂则需要额外的杂质才能在铁心中辐射，除非密度最高。与标准单零点（作为高级分流器的样本）相比，snowflare plus配置似乎更适合利用液态金属选件的优势。关于其他杂质，目前仅考虑Ar和Ne。即使在最大功率下，它们也可以极大地帮助达到和研究深处的超脱条件，但对于操作而言并非必不可少。要充分利用其巨大潜力，需要在设计目标制冷系统时具有广泛的灵活性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号