New features of the energy confinement from TUMAN-3 ohmic H-mode experiments
- 1 July 1994
- journal article
- Published by IOP Publishing in Plasma Physics and Controlled Fusion
- Vol. 36 (7A) , A165-A170
- https://doi.org/10.1088/0741-3335/36/7a/022
Abstract
New features of the energy confinement were observed in the Ohmic regime with reduced transport - Ohmic H-mode. Parametric dependencies as well as absolute values of the energy confinement time are in agreement with scaling proposed for description of the ELM-free H mode in bigger devices with powerful auxiliary heating ("DIII/JET H-mode" scaling). In particular, strong dependencies of tau E on plasma current and input power and weak dependencies on density were found. Energy confinement time is enhanced by a factor of 15 compared to predictions of the usual ohmic scalings ("Neo-Alcator", "Merezhkin-Mukhovatov"). In the small tokamak TUMAN-3 30ms energy confinement time was achieved.Keywords
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