Back to Search
Start Over
Progress in the Development of a High Power Helicon Plasma Source for the Materials Plasma Exposure Experiment
- Source :
- Fusion Science and Technology; November 2017, Vol. 72 Issue: 4 p588-594, 7p
- Publication Year :
- 2017
-
Abstract
- AbstractProto-MPEX is a linear plasma device being used to study a novel RF source concept for the planned Material Plasma Exposure eXperiment (MPEX), which will address plasma-materials interaction (PMI) for nuclear fusion reactors. Plasmas are produced using a large diameter helicon source operating at a frequency of 13.56 MHz at power levels up to 120 kW. In recent experiments the helicon source has produced deuterium plasmas with densities up to ~6 × 1019 m–3measured at a location 2 m downstream from the antenna and 0.4 m from the target. Previous plasma production experiments on Proto-MPEX have generated lower density plasmas with hollow electron temperature profiles and target power deposition peaked far off axis. The latest experiments have produced flat Teprofiles with a large portion of the power deposited on the target near the axis. This and other evidence points to the excitation of a helicon mode in this case.
Details
- Language :
- English
- ISSN :
- 15361055
- Volume :
- 72
- Issue :
- 4
- Database :
- Supplemental Index
- Journal :
- Fusion Science and Technology
- Publication Type :
- Periodical
- Accession number :
- ejs43526817
- Full Text :
- https://doi.org/10.1080/15361055.2017.1352429