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Real-time measurement and feedback control of ion temperature profile and toroidal rotation using fast CXRS system in JT-60U
- Source :
-
Fusion Engineering & Design . Dec2009, Vol. 84 Issue 12, p2206-2213. 8p. - Publication Year :
- 2009
-
Abstract
- Abstract: A fast charge exchange recombination spectroscopy (CXRS) system has been developed for the real-time measurement and feedback control of ion temperature (T i) profile and toroidal rotation velocity (V t) in JT-60U. In order to control T i and V t in real-time, the charge exchange recombination spectroscopy with high time resolution, the real-time processor system, and the real-time control system have been developed. Utilizing this system, real-time control of the T i gradient between r/a ∼0.25–0.5 has been demonstrated with neutral beams at high beta plasmas (normalized beta β N ∼1.6–2.8). The strength of the internal transport barrier is controlled. Moreover, the real-time control of V t has been demonstrated from counter (anti-parallel to the plasma current, I p) to co (parallel to the I p) direction. Then the behavior of edge localized mode (ELM) is changed by controlling the V t. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09203796
- Volume :
- 84
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Fusion Engineering & Design
- Publication Type :
- Academic Journal
- Accession number :
- 45070009
- Full Text :
- https://doi.org/10.1016/j.fusengdes.2009.04.006