Fuel injector for spherical tokamak using helicon wave

使用螺旋波的球形托卡马克燃料喷射器

• 批准号: 09558062
• 负责人: TOYAMA Hiroshi
• 金额: $ 7.49万
• 依托单位: The University of Tokyo
• 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 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09558062/
• 关键词: helicon wave; plasma source; spherical tokamak; high density; injector; high frequency wave; fuel; 内部アンテナ

The purpose of this study is the research and development of fuel injector using the spherical tokamak TST-M (Tokyo Spherical Tokamak-modified).1. Remarkable effects have not observed in the experiments of internal ring antenna using 8MHz, 10kw oscillator.2. Induction coils of 3 turns have been set inside TST-M vacuum vessel. Plasma production schemes are much improved so that it is now used routinely.3. High frequency wave (2.45GHz, 5 kW) is coupled to plasma through the vacuum window. The discharge duration becomes longer.Induction coil experiments in TST-M :Induction coils of 3 turns have been set inside TST-M vacuum vessel. The purposes are 1) Preionization by induction coils so that volt second from OH coils are used effectively for the plasma heating.2) The diverted plasma is formed by induction coils.The plasma current increases from 40 kA to 55 kA and discharge duration increases to 6 ms. It is confirmed that he plasma is produced around the induction coils from visible light diagnostics.Thus it is confirmed that induction coil operation is useful in spherical tokamak.

本研究的目的是研究和开发采用球形托卡马克TST-M（东京球形托卡马克改进型）的喷油器。 1．使用8MHz、10kw振荡器的内环天线实验中未观察到明显的效果。 2． TST-M真空容器内设置有3匝感应线圈。等离子体生产方案得到很大改进，现已常规使用。3．高频波（2.45GHz，5kW）通过真空窗口耦合到等离子体。放电时间变长。 TST-M中的感应线圈实验：TST-M真空容器内设置了3匝感应线圈。目的是 1) 通过感应线圈进行预电离，以便有效地利用 OH 线圈的伏秒来进行等离子体加热。2) 通过感应线圈形成转向等离子体。等离子体电流从 40 kA 增加到 55 kA，放电持续时间增加到 6 ms。通过可见光诊断证实，感应线圈周围产生等离子体。从而证实感应线圈操作在球形托卡马克中是有用的。

项目成果

H.Toyama: "Helicity Injection Experiments and Turbulence Measurement" Fusion Energy. 2. 223-227 (1997)

H.Toyama：“螺旋度注入实验和湍流测量”聚变能。