Enhancement of localized ICRF heating and current drive in TFTR D-T plasmas

Journal Article · Tue Apr 01 04:00:00 EST 1997 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.53360· OSTI ID:580235

Schilling, G; Hosea, J C; Majeski, R; Rogers, J H; Wilson, J R ^[1]

---

1. 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 Laboratory
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 580235
• Report Number(s): CONF-9704102--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 403; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANTENNAS
BERNSTEIN MODE
D-T REACTORS
ICR HEATING
MHZ RANGE 01-100
MODE CONVERSION
TFTR TOKAMAK