Study of an edge transport barrier by Langmuir probes in the compact helical system
Creators
- 1. Department of Energy Engineering and Science, Nagoya University, Nagoya 464-8603 (Japan)
- 2. National Institute of Fusion Science, Toki 509-5292 (Japan)
Description
The edge transport barrier (ETB) produced by the L-H transition was measured by a triple Langmuir probe (LP) at two toroidal sections of the compact helical system (CHS), of which diagnostic method has good time and spatial resolutions. The radial profiles of electron density (ne), electron temperature (Te) and space potential (Vs) in the ETB region have different shapes at two different toroidal sections. These profiles are deformed inside the ETB region at one location and are formed with rather smooth variations at the other. These deformations gradually disappear in the deep H-phase (after ∼15 ms from the transition) and the profiles inside the ETB become similar at both sections. The deformation seems linked to the presence of a non-rotating magnetic island at the rational surface of the rotational transform ι/2π = 1
Availability note (English)
Available online at http://stacks.iop.org/0741-3335/48/A277/ppcf6_5A_S26.pdf or at the Web site for the journal Plasma Physics and Controlled Fusion (ISSN 1361-6587) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0741-3335/48/A277/ppcf6_5A_S26.pdf;
- DOI
- 10.1088/0741-3335/48/5A/S26;
- PII
- S0741-3335(06)10678-8;
Publishing Information
- Journal Title
- Plasma Physics and Controlled Fusion
- Journal Volume
- 48
- Journal Issue
- 5A
- Journal Page Range
- p. A277-A283
- ISSN
- 0741-3335
- CODEN
- PPCFET
Conference
- Title
- 10. IAEA technical meeting on H-mode physics and transport barriers
- Dates
- 28-30 Sep 2005
- Place
- St. Petersburg (Russian Federation)
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37063192
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CHARGED-PARTICLE TRANSPORT; DEFORMATION; ELECTRON DENSITY; ELECTRON TEMPERATURE; H-MODE PLASMA CONFINEMENT; L-MODE PLASMA CONFINEMENT; LANGMUIR PROBE; MAGNETIC ISLANDS; MODE RATIONAL SURFACES; PLASMA POTENTIAL; ROTATIONAL TRANSFORM; SPATIAL RESOLUTION; VARIATIONS
- Descriptors DEC
- CONFINEMENT; ELECTRIC POTENTIAL; ELECTRIC PROBES; MAGNETIC CONFINEMENT; MAGNETIC FIELD CONFIGURATIONS; MAGNETIC SURFACES; PLASMA CONFINEMENT; PROBES; RADIATION TRANSPORT; RESOLUTION
Optional Information
- Collaborations
- CHS Experimental Group