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New ECE diagnostics for the TEXTOR-94 tokamak

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Abstract

To aid the scientific research program on the Toroidal Experiment for Technology Oriented Research (TEXTOR)-94 tokamak, the existing electron cyclotron emission (ECE) diagnostics for the electron temperature studies are being extended with new systems that feature a good temporal and radial resolution. Using the possibility of obtaining the data on a fast time scale, ECE systems allow one to study fast phenomena like the dynamics of small-scale structures such as magnetic islands and transport barriers and microscopic temperature fluctuations throughout the plasma. The quantitative information about nonthermal electron populations can be obtained from the comparison of the second and third harmonic emission. A new 16-channel frequency tunable radiometer and a four-channel second harmonic system were recently installed at TEXTOR-94. The detailed description of the new TEXTOR-94 ECE systems and the recent results will be given and discussed in this article. (C) 2001 American Institute of Physics.

Year of Publication
2001
Journal
Review of Scientific Instruments
Volume
72
Number
1
Number of Pages
359-362
Date Published
Jan
ISBN Number
0034-6748
DOI
PId
027f35e6d6ea9b4722bcc8c4350ec1ad
Journal Article
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