Enhancement of localized ICRF heating and current drive in TFTR D-T plasmas
- Princeton University Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)
Theoretical advantages have led to an increased importance of the modification and sustainment of pressure and magnetic shear profiles in plasmas. We have demonstrated electron heating and current drive in TFTR plasmas with the existing 43/63.6 MHz ICRF system, both via the fast wave and via mode conversion of the fast wave to an ion Bernstein wave. In order to achieve both on and off-axis mode conversion in a pure D-T plasma, we have changed the operating frequency of two of our transmitters and antennas to 30 MHz and improved the launched directional wave spectrum. As a second step, two new four-strap fast wave antennas have been installed, and a new four-strap direct-launch IBW antenna has been added as well. This reconfiguration and the resulting operating characteristics of the TFTR ICRF system in a variety of discharges will be presented. {copyright} {ital 1997 American Institute of Physics.}
- Research Organization:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 580235
- Report Number(s):
- CONF-9704102-; ISSN 0094-243X; TRN: 98:004073
- Journal Information:
- AIP Conference Proceedings, Vol. 403, Issue 1; Conference: 12. topical conference on radio frequency power in plasmas, Savannah, GA (United States), 1-3 Apr 1997; Other Information: PBD: Apr 1997
- Country of Publication:
- United States
- Language:
- English
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