Electron Bernstein Wave (EBW) current drive profiles and efficiency for STEP
نویسندگان
چکیده
GENRAY and CQL3D were used to estimate the Electron Bernstein Wave (EBW) current drive profiles normalised efficiency ? CD (6) for several STEP reactor concepts with varying temperature, density, geometry magnetic field. > 1.0 was readily found ? = 0.65 ? 0.9 while 0.5 ? 0.5. Okhawa is be most efficient mechanism due high trapped fraction in STEP. Optimal 2 nd harmonic absorption ? 0.8 higher ? ? at wave-particle resonance. 1 st required as there no access launch frequencies examined. Rays negative starting N ? penetrate furthest. Due electron temperature relativistic downshift of becomes comparable Doppler shift, increasing harmonic.
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ژورنال
عنوان ژورنال: Epj Web of Conferences
سال: 2023
ISSN: ['2101-6275', '2100-014X']
DOI: https://doi.org/10.1051/epjconf/202327701011