Published December 1999
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Formation and collapse of internal transport barrier
Creators
- 1. Department of Nuclear Engineering, Kyoto University, Kyoto (Japan)
- 2. National Institute for Fusion Science, Toki, Gifu (Japan)
- 3. Research Institute for Applied Mechanics, Kyushu University, Kasuga Fukuoka (Japan)
Description
A theoretical model of internal transport barrier (ITB) is developed. The transport model based on the self-sustained turbulence theory of the current-diffusive ballooning mode is extended to include the effects of ExB rotation shear. Delayed formation of ITB is observed in transport simulations. The influence of finite gyroradius is also discussed. Simulation of the current ramp-up experiment successfully described the radial profile of density, temperature and safety factor. A model of ITB collapse due to magnetic braiding is proposed. Sudden enhancement of transport triggered by overlapping of magnetic islands terminates ITB. The possibility of destabilizing global low-n modes is also discussed. (author)
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Additional details
Publishing Information
- Imprint Title
- Fusion energy 1998. Proceedings. V. 1-4
- Imprint Pagination
- 1721 p.
- Journal Issue
- no. 1/P
- Series
- C and S papers series
- Journal Page Range
- v. 4 p. 1367-1374
- ISSN
- 1563-0153
- Report number
- IAEA-CSP--1/P
Conference
- Title
- 17. IAEA fusion energy conference
- Dates
- 18-24 Oct 1998
- Place
- Yokohama (Japan)
INIS
- Country of Publication
- International Atomic Energy Agency (IAEA)
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 31011484
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- COMPUTERIZED SIMULATION; CONFINEMENT TIME; MAGNETIC CONFINEMENT; MEETINGS; MHD EQUILIBRIUM; PLASMA CONFINEMENT; PLASMA SIMULATION; TOROIDAL CONFIGURATION
- Descriptors DEC
- ANNULAR SPACE; CLOSED CONFIGURATIONS; CONFIGURATION; CONFINEMENT; EQUILIBRIUM; MAGNETIC FIELD CONFIGURATIONS; PLASMA CONFINEMENT; SIMULATION; SPACE
Optional Information
- Notes
- 10 refs, 8 figs
- Secondary number(s)
- TH--1/6