Published October 2009
| Version v1
Journal article
Local scrape-off layer control using biased electrodes in NSTX
Creators
- 1. Princeton Plasma Physics Laboratory, PO Box 451, Princeton, NJ 08540 (United States)
- 2. Nova Photonics Inc., Oak Place, Princeton, NJ 08540 (United States)
- 3. Oak Ridge National Laboratory, PO Box 2008, Oak Ridge, TN 37831 (United States)
- 4. Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94550 (United States)
Description
An experiment on the National Spherical Torus Experiment (NSTX) was designed to test the theory that biased electrodes can affect the local scrape-off layer (SOL) by creating a strong radial E x B flow (Cohen and Ryutov 1997 Nucl. Fusion 37 621). These electrodes were located near the outer midplane and were biased at up to ±90 V with respect to the local vacuum vessel ground. This biasing caused large changes in the local SOL profiles as measured by an array of Langmuir probes between the electrodes. A theory is presented which at least partially describes the experimental results.
Availability note (English)
Available from http://dx.doi.org/10.1088/0741-3335/51/10/105012Additional details
Identifiers
- DOI
- 10.1088/0741-3335/51/10/105012;
- PII
- S0741-3335(09)16238-3;
Publishing Information
- Journal Title
- Plasma Physics and Controlled Fusion
- Journal Volume
- 51
- Journal Issue
- 10
- Journal Page Range
- [24 p.]
- ISSN
- 0741-3335
- CODEN
- PPCFET
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41104508
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- CONTROL; ELECTRODES; LANGMUIR PROBE; NSTX DEVICE; PLASMA SCRAPE-OFF LAYER
- Descriptors DEC
- BOUNDARY LAYERS; CLOSED PLASMA DEVICES; ELECTRIC PROBES; LAYERS; PROBES; SPHEROMAK DEVICES; THERMONUCLEAR DEVICES; TOKAMAK DEVICES