Physics of Relaxation in Coaxial Helicity Injection

同轴螺旋注入中的弛豫物理

• 批准号: 09045057
• 负责人: UYAMA Tadao
• 金额: $ 3.2万
• 依托单位: Himeji Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09045057/
• 关键词: Current Drive; Spherical Tours; Coaxial Helicity Injection; Magnetic fluctuation; Self-organization; Relaxation; Plasma flow; Ion heating; ヘリシティ電流駆動; スフェリカルトカマク; ヘリシティ注入

In 1999 fiscal year, a possible mechanism for current drive in spherical tours configurations with coaxial helicity injection (CHI) has been studied at the University of Washington in collaboration with Himeji Institute of Technology. Measurements using a 1m, resolution of 0.09 A, Ion Doppler Spectrometer (IDS), which was carried from Himeji Institute of Technology in 1998 fiscal year, have been made on the Helicity Injected Torus-II (HIT-II) at the University of Washington. The data from the IDS have been used to determine temperature for various ion species and toroidal ion flow velocities. Results showed that ion temperature is 〜100 ev(OV) in the plasma core and 〜30 eV(CIII) at the plasma edge and ion flow velocities are 10〜20 km/s. The measured axial and toroidal flows are correlated with a high frequency (50 kHz) n=1 mode. A dynamo model for current drive, where the electrons on the separatrix are tied to a rotating n=1 mode, is presented and its predictions compared with experimental results.

1999财政年度，华盛顿大学与姬路技术研究所合作研究了具有同轴螺旋度注入（CHI）的球形图尔斯构型中电流驱动的可能机制。用姬路工业研究所1998年度引进的分辨率为0.09 A的离子多普勒谱仪（IDS）对华盛顿大学的螺旋注入环II（HIT-II）进行了测量。从IDS的数据已被用来确定各种离子种类和环形离子流速的温度。结果表明，等离子体中心离子温度为100 eV（OV），边缘离子温度为30 eV（CIII），离子流速为10 ~ 20 km/s。测得的轴向和环形流与高频（50 kHz）n=1模式。电流驱动的发电机模型，其中的分界线上的电子被绑定到一个旋转n=1的模式，提出和它的预测与实验结果进行比较。

项目成果

T.Kanki, M.Nagata, T.Uyama, S.Ikuno, A.Kamitani: "Partially Relaxed Magnetohydrodynamics Equillibria with Bias-Flux Leakage Obtained in a Helicity-Driven Spheromak"Journal of Physical Society of Japan. Vol.67. 140-146 (1998)

T.Kanki、M.Nagata、T.Uyama、S.Ikuno、A.Kamitani：“在螺旋驱动 Spheromak 中获得的具有偏置磁通泄漏的部分松弛磁流体动力学平衡”日本物理学会杂志。

R.J.Smith,M.Nagata,et al.: "Diagnostics for the HIT-II Experimant" Bulletin of the American Physical Society. 43・8. 1869-1869 (1998)

R.J.Smith、M.Nagata 等人：“HIT-II 实验的诊断”美国物理学会公报 43・8（1998 年）。

M.Nagata,N.Fukumoto,T.Uyama et al.: "Periodic Plasmoid Generation and Magnetic Reconnection Observed in the HIST Spherical Torus Experiment"Bulletin of the American Physical Society. 44・7. 272-272 (1999)

M. Nagata、N. Fukumoto、T. Uyama 等人：“HIST 球形环面实验中观察到的周期性等离子体团生成和磁重联”美国物理学会公报 44・7（1999）。

宇山 忠男・永田 正義: "コンパクトトーラスの高温プラズマへの入射実験" プラズマ核融合学会誌. 74・3. 200-216 (1998)

Tadao Uyama 和 Masayoshi Nagata：“将紧凑环面注入高温等离子体的实验”等离子体聚变学会杂志 74・3（1998 年）。

M.Nagata, T.Uyama: Journal of Plasma and Fusion Research. Vol.76. 522-527 (2000)

M.Nagata、T.Uyama：等离子体与聚变研究杂志。