تقرير
Enhanced transport at high plasma pressure and sub-threshold kinetic ballooning modes in Wendelstein 7-X
| العنوان: | Enhanced transport at high plasma pressure and sub-threshold kinetic ballooning modes in Wendelstein 7-X |
|---|---|
| المؤلفون: | Mulholland, P., Aleynikova, K., Faber, B. J., Pueschel, M. J., Proll, J. H. E., Hegna, C. C., Terry, P. W., Nührenberg, C. |
| سنة النشر: | 2023 |
| المجموعة: | Physics (Other) |
| مصطلحات موضوعية: | Physics - Plasma Physics |
| الوصف: | High-performance fusion plasmas, requiring high pressure $\beta$, are not well-understood in stellarator-type experiments. Here, the effect of $\beta$ on ion-temperature-gradient-driven (ITG) turbulence is studied in Wendelstein 7-X (W7-X), showing that subdominant kinetic ballooning modes (KBMs) are unstable well below the ideal MHD threshold and get strongly excited in the turbulence. By zonal-flow erosion, these sub-threshold KBMs (stKBMs) affect ITG saturation and enable higher heat fluxes. Controlling stKBMs will be essential to allow W7-X and future stellarators to achieve maximum performance. Comment: 16 pages, 5 figures |
| نوع الوثيقة: | Working Paper |
| الوصول الحر: | http://arxiv.org/abs/2306.03694Test |
| رقم الانضمام: | edsarx.2306.03694 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |