D. Yu. Gavrisenko, I. V. Shikhovtsev, Yu. I. Belchenko, A. I. Gorbovskiy, A. A. Kondakov, O. Z. Sotnikov, A. L. Sanin, V. A. Vointsev, R. A. Finashin
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引用次数: 0
摘要
原子束注入是热核设施中等离子体加热的主要方法之一。俄罗斯科学院西伯利亚分院布德克核物理研究所(Budker Institute of Nuclear Physics)正在开发一种基于负氢离子加速和中和的等离子体加热高能氢原子喷射器。该喷射器使用表面等离子源,其中的等离子流是通过射频驱动器产生的:当射频电压被施加到外部天线上时,感应射频(RF)放电会在圆柱形陶瓷腔内点燃。作为这项工作的一部分,我们正在开发新版本的射频驱动器。该驱动器使用保护屏来防止过热和对陶瓷壁的侵蚀。研究了射频驱动器在不同保护屏下的运行情况。这些保护屏降低了射频功率传输到放电中的效率,但使离子源能够在多秒或稳态脉冲中运行。
Comparative Analysis of High-Frequency Plasma Drivers with Various Protective Screens for Atomic Injectors with Multi-Second Pulse Duration
Atomic beam injection is one of the main methods of plasma heating in thermonuclear facilities. An injector of high-energy hydrogen atoms for plasma heating based on the acceleration and neutralization of negative hydrogen ions is being developed at the Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences. The injector uses a surface plasma source, in which a plasma flow is created using a radio-frequency driver: an induction radio-frequency (RF) discharge, ignited inside a cylindrical ceramic chamber when an RF voltage is applied to an external antenna. As a part of this work, a new version of the RF driver is being developed. A protective screen is used to prevent overheating and erosion of the ceramic wall of the driver. The operation of RF driver with different protective screens is studied. These screens reduce the efficiency of RF power transmission into the discharge, but make it possible the operation of the ion source in multi-second or steady-state pulses.
期刊介绍:
Plasma Physics Reports is a peer reviewed journal devoted to plasma physics. The journal covers the following topics: high-temperature plasma physics related to the problem of controlled nuclear fusion based on magnetic and inertial confinement; physics of cosmic plasma, including magnetosphere plasma, sun and stellar plasma, etc.; gas discharge plasma and plasma generated by laser and particle beams. The journal also publishes papers on such related topics as plasma electronics, generation of radiation in plasma, and plasma diagnostics. As well as other original communications, the journal publishes topical reviews and conference proceedings.