A synthetic diagnostic for beam emission spectroscopy in the helically symmetric experiment stellarator
| Autor: | S. T. A. Kumar, David G. Anderson, T. J. Dobbins |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
Beam diameter Plasma 01 natural sciences 010305 fluids & plasmas law.invention Computational physics symbols.namesake Helically Symmetric Experiment Stark effect law Electric field 0103 physical sciences symbols Physics::Accelerator Physics Plasma diagnostics Atomic physics 010306 general physics Instrumentation Stellarator Beam (structure) |
| Zdroj: | Review of Scientific Instruments. 87:11D413 |
| ISSN: | 1089-7623 0034-6748 |
| Popis: | The Helically Symmetric Experiment (HSX) has a number of active spectroscopy diagnostics. Due to the relatively large beam width compared to the plasma minor radius, it is difficult to achieve good spatial resolution at the core of the HSX plasma. This is due to the fact that the optical sightline cuts through many flux surfaces with varying field vectors within the beam. In order to compare the experimental results with theoretical models it is important to accurately model the beam width effects. A synthetic diagnostic has been developed for this purpose. This synthetic diagnostic calculates the effect of spot size and beam width on the measurements of quantities of interest, including radial electric field, flow velocity, and Stark polarization. |
| Databáze: | OpenAIRE |
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