...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nuclear fusion >Control of core argon impurity profile by ECH in KSTAR L-mode plasmas
【24h】

Control of core argon impurity profile by ECH in KSTAR L-mode plasmas

机译：在KSTAR L型等离子体中通过ECH控制堆芯氩杂质分布

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

Experiments on trace argon impurity transport in L-mode discharges were performed on Korea superconducting tokamak advanced research (KSTAR) with electron cyclotron resonance heating (ECH). Ar emission was measured by soft x-ray (SXR) arrays and vacuum UV (VUV) diagnostics. A significant reduction in the core Ar emissivity was observed with core ECH. The reduction was the largest with on-axis heating and became smaller with outward heating positions. The diffusivity and convection velocity of Ar were obtained by analysis of the SXR data with the SANCO impurity transport code for the on-axis ECH and the non-ECH shots. In the on-axis ECH case, both diffusivity and convection velocity increased. Furthermore, the convection changed its direction from inward to outward in the plasma core (r/a ＜ 0.3), resulting in a hollow profile of the total Ar density. Together with the reduction in the SXR signals, the hollow impurity profile in the core and the reversal of the convection velocity consistently confirm that ECH can reduce impurity accumulation in the core region. Neoclassical impurity transport and linear stability of micro-turbulence were calculated and discussed in relation to the possible transport mechanism.
机译：在韩国超导托卡马克先进研究（KSTAR）和电子回旋共振加热（ECH）的基础上，进行了L型放电中痕量氩杂质迁移的实验。通过软X射线（SXR）阵列和真空紫外线（VUV）诊断仪测量Ar的发射。核心ECH观察到核心Ar发射率显着降低。轴向加热时的减少量最大，而向外加热时的减少量则较小。 Ar的扩散率和对流速度是通过使用SANCO杂质传输代码对轴上ECH和非ECH喷丸分析SXR数据获得的。在同轴ECH情况下，扩散率和对流速度均增加。此外，对流在等离子芯中从内向外改变了方向（r / a ＜0.3），导致了总Ar密度的空心分布。连同SXR信号的减少，堆芯中的空心杂质分布以及对流速度的逆转一致地证实ECH可以减少堆芯区域中的杂质积累。计算并讨论了新古典杂质的输运和微湍流的线性稳定性，并讨论了可能的输运机理。

著录项

  • 来源
    《Nuclear fusion》 |2015年第6期|063016.1-063016.9|共9页
  • 作者

    Joohwan Hong; Seung Hun Lee; Juhyung Kim; C.R. Seon; S.G. Lee; G.Y. Park; K.D. Lee; S.S. Henderson; H.Y. Lee; Jae Sun Park; Juhyeok Jang; Siwon Jang; Taemin Jeon; M. OMullane; Wonho Choe;

  • 作者单位

    Department of Physics, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea;

    Department of Physics, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea;

    National Fusion Research Institute, 169-148 Gwahak-ro, Yuseong-gu, Daejeon, Republic of Korea;

    National Fusion Research Institute, 169-148 Gwahak-ro, Yuseong-gu, Daejeon, Republic of Korea;

    National Fusion Research Institute, 169-148 Gwahak-ro, Yuseong-gu, Daejeon, Republic of Korea;

    National Fusion Research Institute, 169-148 Gwahak-ro, Yuseong-gu, Daejeon, Republic of Korea;

    National Fusion Research Institute, 169-148 Gwahak-ro, Yuseong-gu, Daejeon, Republic of Korea;

    Department of Physics SUPA, University of Strathclyde, Glasgow G4 ONG, UK;

    Department of Physics, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea;

    Department of Physics, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea;

    Department of Physics, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea;

    Department of Physics, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea;

    Department of Physics, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea;

    Department of Physics SUPA, University of Strathclyde, Glasgow G4 ONG, UK;

    Department of Physics, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    impurity; transport; KSTAR; Ar; tokamak; impurity accumulation; ECH;

    机译：不纯;运输;科士达;Ar;托卡马克杂质积累ECH;

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