The UCLA frequency tunable correlation reflectometer system on DIII-D
Creators
- 1. Institute of Plasma and Fusion Research and EE Department, UCLA, Los Angeles, California 90024 (United States)
Description
A broadband tunable (∼50--75 GHz) correlation reflectometer system is installed and operational on the DIII-D tokamak. The same launch and receive horns are utilized for the two probing frequencies ensuring that they sample the same path within the plasma. Very wide band IF electronics allow the separation frequency to be continuously tuned over the range 100 MHz→10 GHz corresponding to a maximum spatial separation of ∼7 cm. Sweeping the separation frequency during the plasma shot produces multiple spatial points (>10) on a single discharge reducing shot to shot reproducibility problems and increasing the spatial resolution. A description of the microwave system, laboratory tests, and representative data from a tokamak discharge are presented. Difficulties with the method and some possible resolutions are discussed
Additional details
Publishing Information
- Journal Title
- Review of Scientific Instruments
- Journal Volume
- 63
- Journal Issue
- 10
- Journal Page Range
- p. 4661-4664.
- ISSN
- 0034-6748
- CODEN
- RSINAK
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 24013468
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- CONFINEMENT TIME; MICROWAVE EQUIPMENT; PLASMA DIAGNOSTICS; PLASMA WAVES; SPATIAL RESOLUTION; TOKAMAK DEVICES; TURBULENCE
- Descriptors DEC
- CLOSED PLASMA DEVICES; ELECTRONIC EQUIPMENT; EQUIPMENT; RESOLUTION; THERMONUCLEAR DEVICES