한국진공학회:학술대회논문집 (Proceedings of the Korean Vacuum Society Conference)
- 한국진공학회 2009년도 제38회 동계학술대회 초록집
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- Pages.435-435
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- 2010
A Inclined Slot-excited Circular Plasma Source with a Cusp Magnetic Field
- You, H.J. (National Fusion Research Institute) ;
- Kim, D.W. (National Fusion Research Institute) ;
- Koo, M. (National Fusion Research Institute) ;
- Jang, S.W. (National Fusion Research Institute) ;
- Jung, Y.H. (National Fusion Research Institute) ;
- Lee, B.J. (National Fusion Research Institute)
- 발행 : 2010.02.17
초록
A inclined slot-excited plasma source is newly designed and constructed for higher flux HNB(Hyperthermal Neutral Beam) generation. The present source is different from the vertical SLAN(SLot ANtenna) sources [1] in two aspects. One is that the slots are inclined, and the other is that the magnetic field is configured to a cusp type. These modifications are intended to make the source plasma operated in sub-milli-torr pressure regime and as thin as possible, both of which is to get higher HNB flux by decreasing the re-ionization rate of the reflected atoms from the neutralizer [2]. The plasma is generated in a quartz tube of internal diameter 170 mm enclosed in a aluminum application chamber of larger diameter 250 mm. The microwave power is fed to the plasma chamber by 8 inclined slots cut into the application chamber wall. The slots are coupled the chamber to a WR280 waveguide wound around it to form a ring resonator. In order to make two slots
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