Academic Journal
Assessment of quasi-linear effect of RF power spectrum for enabling lower hybrid current drive in reactor plasmas
| العنوان: | Assessment of quasi-linear effect of RF power spectrum for enabling lower hybrid current drive in reactor plasmas |
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| المؤلفون: | Cesario Roberto, Cardinali Alessandro, Castaldo Carmine, Amicucci Luca, Ceccuzzi Silvio, Galli Alessandro, Napoli Francesco, Panaccione Luigi, Santini Franco, Schettini Giuseppe, Tuccillo Angelo Antonio |
| المصدر: | EPJ Web of Conferences, Vol 157, p 03007 (2017) |
| بيانات النشر: | EDP Sciences |
| سنة النشر: | 2017 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | Physics, QC1-999 |
| الوصف: | The main research on the energy from thermonuclear fusion uses deuterium plasmas magnetically trapped in toroidal devices. To suppress the turbulent eddies that impair thermal insulation and pressure tight of the plasma, current drive (CD) is necessary, but tools envisaged so far are unable accomplishing this task while efficiently and flexibly matching the natural current profiles self-generated at large radii of the plasma column [1–5]. The lower hybrid current drive (LHCD) [6] can satisfy this important need of a reactor [1], but the LHCD system has been unexpectedly mothballed on JET. The problematic extrapolation of the LHCD tool at reactor graded high values of, respectively, density and temperatures of plasma has been now solved. The high density problem is solved by the FTU (Frascati Tokamak Upgrade) method [7], and solution of the high temperature one is presented here. Model results based on quasi-linear (QL) theory evidence the capability, w.r.t linear theory, of suitable operating parameters of reducing the wave damping in hot reactor plasmas. Namely, using higher RF power densities [8], or a narrower antenna power spectrum in refractive index [9,10], the obstacle for LHCD represented by too high temperature of reactor plasmas should be overcome. The former method cannot be used for routinely, safe antenna operations, Thus, only the latter key is really exploitable in a reactor. The proposed solutions are ultimately necessary for viability of an economic reactor. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2100-014X |
| Relation: | https://doi.org/10.1051/epjconf/201715703007; https://doaj.org/toc/2100-014X; https://doaj.org/article/312d4c28c4a6451895008cb0427d7d12 |
| DOI: | 10.1051/epjconf/201715703007 |
| الاتاحة: | https://doi.org/10.1051/epjconf/201715703007 https://doaj.org/article/312d4c28c4a6451895008cb0427d7d12 |
| رقم الانضمام: | edsbas.C2CFDD20 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 2100014X |
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| DOI: | 10.1051/epjconf/201715703007 |