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The Polaris Linear Plasma Device
IEEE Transactions on Plasma Science ( IF 1.5 ) Pub Date : 2021-04-14 , DOI: 10.1109/tps.2021.3070638
Ghassan Antar , Joan Younes , Marwan Darwish , Joseph Costantine , Mohamad Roumieh , Charbel Habchi

We report the construction of Polaris, a new linear plasma device with an axial magnetic field dedicated to research and education at the American University of Beirut in Lebanon. The goal is to initiate the investigation of topics related to basic magnetized plasma physics and nuclear fusion. We discuss the novel technical solutions found to set up various components of the device. We start with the magnetic coils where we use power cables to generate the required axial magnetic field. They are included in a stainless steel case for water-cooling. Then, we present the vacuum and the gas inlet systems with which we control the neutral pressure. The way we manufacture the water-cooled radio frequency (RF) antenna allows the production of a variety of designs. Polaris is thus built to operate in a steady state. Using a reciprocating Langmuir probe, we determine the plasma properties as a function of the various control parameters. As the plasma remains in the “blue mode,” we show that the increase in the main magnetic field leads to an increase in the density but a decrease in the plasma temperature. The increase in neutral pressure yields the same effects. However, the increase in RF power leads to an increase in both density and temperature. Finally, plans for future investigations are briefly described.

中文翻译:

Polaris线性等离子设备

我们报告了北极星的构造,这是一种新型的线性等离子装置,带有轴向磁场,专门用于黎巴嫩贝鲁特美国大学的研究和教育。目的是启动对与基本磁化等离子体物理和核聚变有关的主题的研究。我们讨论了用于设置设备各种组件的新颖技术解决方案。我们从电磁线圈开始,在电磁线圈中,我们使用电力电缆产生所需的轴向磁场。它们包含在用于水冷的不锈钢外壳中。然后,我们介绍控制中性压力的真空和进气系统。我们制造水冷射频(RF)天线的方式允许进行多种设计。因此,Polaris可以在稳定状态下运行。使用往复式朗缪尔探针,我们根据各种控制参数确定等离子体的性质。当等离子保持在“蓝色模式”时,我们显示出主磁场的增加导致密度增加,但等离子温度下降。中性压力的增加会产生相同的效果。然而,RF功率的增加导致密度和温度两者的增加。最后,简要描述了将来的调查计划。RF功率的增加导致密度和温度的增加。最后,简要描述了将来的调查计划。RF功率的增加导致密度和温度的增加。最后,简要描述了将来的调查计划。
更新日期:2021-05-11
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