Upper limit on turbulent electron temperature fluctuations on Alcator C-Mod
Abstract
Correlation radiometry has been used successfully in the past to measure turbulent electron temperature fluctuations in the core of both stellarators and tokamaks. Using the disjoint frequency technique on Alcator C-mod we obtain an upper bound on the average Te fluctuation amplitude. This limit of about 1% is significantly lower than the fluctuation amplitude observed on either TEXT-U or W7-AS. Although a high-resolution microwave system is used, the system spot size may not be sufficient to resolve very high k fluctuations. Fluctuation detection may also suffer from the system's location off the midplane.
- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- October 2003
- Bibcode:
- 2003APS..DPPFP1021I