Abstract
In this paper we use the SSWICH-SW software to calculate the (nonlinear) plasma potential near the ASDEX Upgrade 3-strap antenna for various operating parameters, and compare it with the (linear) parallel electric field strength and the (linear) RF potential. It is believed that the plasma potential is the cause of ion sputtering and additional heat loads on the antenna, and that the parallel electric field strength (as calculated by linear codes without sheath boundary conditions) is a good proxy for the plasma potential, and our results confirm the latter.
| Original language | English |
|---|---|
| Article number | 116034 |
| Journal | Nuclear Fusion |
| Volume | 57 |
| Issue number | 11 |
| DOIs | |
| State | Published - Aug 11 2017 |
| Externally published | Yes |
Funding
This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014–2018 under grant agreement No 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission.
Keywords
- ICRF
- SSWICH
- plasma sheath