Swinging reciprocating Mach probes for the high field side scrape-off layer in DIII-D
Journal Article
·
· Review of Scientific Instruments
- University of Toronto Institute for Aerospace Studies, Toronto M3H 5T6 (Canada)
- General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States)
A new pair of in situ reciprocating Mach probes termed swing probes has been deployed on the DIII-D centerpost for the 2012 experimental campaign. When not deployed, the entire assembly is housed in a <5 cm space underneath the centerpost tiles. This design is unique in that the probe swings vertically through the edge plasma, taking measurements along a 180 Degree-Sign arc with a 20 cm radius. The motion is powered by actuator coils that interact with the tokamak's magnetic field. Two electrodes maintain a Mach-pair orientation throughout the swing and provide measurements of saturation current, electron temperature, and parallel flow speeds up to the separatrix.
- OSTI ID:
- 22093862
- Journal Information:
- Review of Scientific Instruments, Vol. 83, Issue 10; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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