...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fusion Science and Technology >PROGRESS TOWARD STEADY-STATE OPERATION IN LHD USING ELECTRON CYCLOTRON WAVES
【24h】

PROGRESS TOWARD STEADY-STATE OPERATION IN LHD USING ELECTRON CYCLOTRON WAVES

机译：利用电子回旋波实现左手稳态工作的进展

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

Trials of steady-state operation (SSO) in the Large Helical Device (LHD) were started when a continuous wave (cw) gyrotron with the output power up to 0.2 MW was introduced to the electron cyclotron heating (ECH) system on LHD in 2003. During the first trial of SSO in the seventh LHD experimental campaign in 2004, severe temperature increase on the waveguide transmission line and, as a result, intense pressure increase in the evacuated waveguide occurred, which terminated the operation at 756 s. Additional pumping sections and cooling structures on the transmission line worked well, allowing a 3900-s sustainment of plasma with n_e=0.15 × 10~(19) m ~(-3) and T_(e0) = 1.7 keV by 0.1 MW injection power in 2005. The improvement of the ECH system by introducing cw gyrotrons with higher power for further improvement of plasma performance in SSO is in progress.rnInvestigations on electron cyclotron current drive (ECCD) physics have been advanced a few years after the proof of ECCD in LHD. By obliquely injecting second-harmonic X-mode EC waves in toroidal direction, stable current up to 5.5 kA is driven, which was evaluated as a difference in plasma currents of the co- and counter-ECCD discharges with 0.1-MW EC wave power. It takes a few seconds for the driven current to saturate. Change in profile of rotational transform by ECCD and profile of driven current density are investigated by use of motional Stark effect measurement. Peaked and localized driven current profile at the plasma core region was confirmed for on-axis second-harmonic ECCD discharges.
机译：2003年，当输出功率高达0.2 MW的连续波（cw）回旋管引入LHD的电子回旋加速器（ECH）系统时，开始了大型螺旋装置（LHD）的稳态操作（SSO）试验。在2004年第七次LHD实验活动中的SSO首次试验期间，波导传输线上的温度急剧升高，结果，真空波导中的压力急剧升高，从而在756 s时终止了运行。传输线上的其他泵送段和冷却结构运行良好，以0.1 MW的注入功率可使n_e = 0.15×10〜（19）m〜（-3）和T_（e0）= 1.7 keV的等离子体维持3900 s。在2005年，通过引入具有更高功率的连续回旋加速器以进一步改善SSO中的等离子体性能来改进ECH系统。rn在对ECCD进行验证后几年，对电子回旋加速器电流驱动（ECCD）物理学的研究已经进行了。 LHD。通过沿环形方向倾斜注入二次谐波X模EC波，可驱动高达5.5 kA的稳定电流，该电流被评估为以0.1 MW EC波功率产生的共和反ECCD放电的等离子体电流之差。驱动电流饱和需要几秒钟。通过使用运动斯塔克效应测量研究了通过ECCD进行的旋转变换轮廓和驱动电流密度轮廓的变化。对于轴向二次谐波ECCD放电，已确认在等离子体核心区域出现了峰值和局部驱动电流曲线。

著录项

  • 来源
    《Fusion Science and Technology》 |2010年第1期|P.551-559|共9页
  • 作者

    Y. YOSHIMURA; S. KUBO; T. SHIMOZUMA; H. IGAMI; H. TAKAHASHI; S. KOBAYASHI; S. ITO; Y. MIZUNO; Y. TAKITA; Y. NAKAMURA; K. OHKUBO; R. IKEDA; K. IDA; M. YOSHINUMA; S. SAKAKIBARA; T. MUTOH; K. NAGASAKI; H. IDEI; T. NOTAKE;

  • 作者单位

    National Institute for Fusion Science, Toki 509-5292, Japan;

    rnNational Institute for Fusion Science, Toki 509-5292, Japan;

    rnNational Institute for Fusion Science, Toki 509-5292, Japan;

    rnNational Institute for Fusion Science, Toki 509-5292, Japan;

    rnNational Institute for Fusion Science, Toki 509-5292, Japan;

    rnNational Institute for Fusion Science, Toki 509-5292, Japan;

    rnNational Institute for Fusion Science, Toki 509-5292, Japan;

    rnNational Institute for Fusion Science, Toki 509-5292, Japan;

    rnNational Institute for Fusion Science, Toki 509-5292, Japan;

    rnNational Institute for Fusion Science, Toki 509-5292, Japan;

    rnNational Institute for Fusion Science, Toki 509-5292, Japan;

    rnNational Institute for Fusion Science, Toki 509-5292, Japan;

    rnNational Institute for Fusion Science, Toki 509-5292, Japan;

    rnNational Institute for Fusion Science, Toki 509-5292, Japan;

    rnNational Institute for Fusion Science, Toki 509-5292, Japan;

    rnNational Institute for Fusion Science, Toki 509-5292, Japan;

    rnInstitute of Advanced Energy, Kyoto University, Uji 611-0011, Japan;

    rnResearch Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan;

    rnTera-Photonics Laboratory, RIKEN, Sendai 980-0845, Japan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    steady-state operation; electron cyclotron heating; electron cyclotron current drive;

    机译：稳态运行;电子回旋加速器加热电子回旋加速器电流驱动;

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