Heating and confinement in the Doublet III tokamak with electron cyclotron heating
Conference
·
OSTI ID:5558073
Electron Cyclotron Heating (ECH) experiments on the Doublet III tokamak using inside launch of the extraordinary mode have shown effective bulk electron heating, with plasma stored energy increases of up to 30 kJ and central electron temperature increases up to 2.5 keV. The confinement time for discharges dominated by ECH was found to be similar in magnitude and scaling to that for discharges dominated by neutral beam injection, even though the power deposition profile for ECH discharges appears to be much narrower than for neutral beam heated discharges. Even above the calculated extraordinary mode cutoff density, for which the observed power density profile appears to be broad, perhaps as broad as in the beam heating case, the energy confinement time does not deteriorate.
- Research Organization:
- GA Technologies, Inc., San Diego, CA (USA)
- DOE Contract Number:
- AC03-84ER51044
- OSTI ID:
- 5558073
- Report Number(s):
- GA-A-18045; CONF-850927-5; ON: DE85014323
- Country of Publication:
- United States
- Language:
- English
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