Abstract
Many mechanisms have been proposed to explain the high harmonic fast wave edge losses in the National Spherical Torus Experiment (NSTX) (Perkins et al 2012 Phys. Rev. Lett. 109 045001). Here, we discuss a newly discovered edge loss mechanism (Tierens et al 2021 Plasma Phys. Control. Fusion 64 035001) which involves the resonant excitation of surface waves on filaments. We show that this edge loss mechanism can explain the main parameter dependencies observed in NSTX experiments.
| Original language | English |
|---|---|
| Article number | 096011 |
| Journal | Nuclear Fusion |
| Volume | 62 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 2022 |
| Externally published | Yes |
Funding
This work has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No. 101052200—EUROfusion). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Commission. Neither the European Union nor the European Commission can be held responsible for them. J.R. Myra was supported by the US Department of Energy Office of Science, Office of Fusion Energy Sciences under Award Number DE-AC05-00OR22725/4000158507. This work was supported by a US Department of Energy (DOE) Scientific Discovery through Advanced Computing Initiative Contract Number DESC0018090 and the US DOE under DE-AC02-CH0911466. In addition, this research used resources of the National Energy Research Scientific Computing Center (NERSC), a US Department of Energy Office of Science User Facility operated under Contract No. DE-AC02-05CH11231. The experimental data upon which figure is based was first published in [], and can be found at http://arks.princeton.edu/ark:/88435/dsp01vx021h49j . We thank S. Zweben for his help with the interpretation of this data.
| Funders | Funder number |
|---|---|
| U.S. Department of Energy | DE-AC02-05CH11231, DESC0018090, DE-AC02-CH0911466 |
| Office of Science | |
| Fusion Energy Sciences | DE-AC05-00OR22725/4000158507 |
| European Commission | 101052200—EUROfusion |
Keywords
- HHFW
- NSTX
- filament
- turbulence
