Fast ECE correlation radiometry for fluctuation measurements in JET and PBX-M : Proceedings of the 9th topical conference on high temperature plasma diagnostics
Zolfaghari, A. M. ; Luckhardt, S. ; Woskov, P. P. ; Cohn, D. R. ; Jones, S. ; Kesner, J. ; Machuzak, J. ; Ramos, J. J. ; Bartlett, D. V. ; Costley, A. E. ; Cripwell, P. ; Porte, L. ; Smith, R. J. ; Kaita, R.
[S.l.] : American Institute of Physics (AIP)
Published 1992
[S.l.] : American Institute of Physics (AIP)
Published 1992
| ISSN: |
1089-7623
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
Electrical Engineering, Measurement and Control Technology
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| Notes: |
We discuss the fluctuation characteristics expected from MHD modes including ballooning modes and show how they can be studied using measurements of ECE. A novel technique, ECE correlation radiometry, which enables the location and spatial structure of long wavelength (L(approximately-greater-than)0.1×a) MHD modes to be determined, is described. Measurements on JET with a 44-channel ECE heterodyne radiometer are presented and show the existence of high-frequency (high n number) MHD modes under high poloidal beta, pellet-enhanced performance (PEP) plasma conditions. Similar measurements are planned for PBX-M and the measurement system is described.
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| Type of Medium: |
Electronic Resource
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| URL: |