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Energetic Particle-GAM in NSTX

Energetic Particle-GAM in NSTX. Guoyong Fu Acknowledgements: E. Fredrickson, R. Nazikian. DIII-D target plasmas: early counter beam injection Reverse Magnetic Shear, high q min. n=0 GAM-like mode has been excited by counter-beam in DIII-D. EAE. Energetic particle –GAM (EGAM).

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Energetic Particle-GAM in NSTX

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  1. Energetic Particle-GAM in NSTX Guoyong Fu Acknowledgements: E. Fredrickson, R. Nazikian

  2. DIII-D target plasmas: early counter beam injection Reverse Magnetic Shear, high qmin n=0 GAM-like mode has been excited by counter-beam in DIII-D EAE Energetic particle –GAM (EGAM) Nazikian et al, PRL, 2008 Fu, PRL, 2008

  3. The goal of this XP is to excite EGAM in NSTX using conditions similar to DIII-D’s • DIII-D parameters: qmin > 2, Te ~ Ti ~ 1kev, ne ~ 1013 cm-3, B~2T, Ebeam~75kev. • NSTX: qmin > 2, Te~Ti~1kev, B~0.5T, ne~ 1013cm-3, Ebeam < 70kev. Prefer counter-injection, May need to pre-heat using HHFW to increase plasma temperature so that T~1kev at the start of NBI injection and qmin > 2.

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