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The development of a negative ion beam plasma neutralizer for ITER NBI

机译:用于ITER NBI的负离子束等离子体中和剂的开发

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A plasma neutralizer (PN) could be an attractive upgrade for the NBI system of ITER. A multicusp magnetic trap with microwave discharge plasma generation has been proposed as a scheme for a PN. The experimental investigation of the scheme is being undertaken in the Kurchatov Institute. The preliminary experiments were done at a small (70 L of plasma volume, 2.45 GHz, 1.5 kW) installation, PNX-1, slightly modified during the experiments to PNX-2. The achieved plasma density of 5 × 10~11 cm~(-3) exceeded the cut--off density by a factor of 7. The next step in this experimental activity is PNX--U (500 L, 7 GHz, 50 kW). Some results of the PNX--U experiments are presented.
机译:等离子体中和器(PN)对于ITER的NBI系统而言可能是有吸引力的升级。已经提出了具有微波放电等离子体产生的多尖端磁阱作为PN的方案。该方案的实验研究正在库尔恰托夫研究所进行。初步实验是在较小的设备(70 L等离子体积,2.45 GHz,1.5 kW)PNX-1上进行的,在实验过程中对PNX-2进行了一些改动。达到的5×10〜11 cm〜(-3)等离子体密度比截止密度高出7倍。此实验活动的下一步是PNX--U(500 L,7 GHz,50 kW )。给出了PNX--U实验的一些结果。

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