Published 1990 | Version v1
Report Open

Experiments utilizing ICRF heating on TFTR

Creators

  • 1. Princeton Univ., NJ (USA). Plasma Physics Lab.
  • 2. Oak Ridge National Lab., TN (USA)
  • 3. Grumman Aerospace Corp., Princeton, NJ (USA)
  • 4. Tokyo Univ. (Japan)

Description

A variety of experiments have been performed on the TFTR tokamak utilizing ICFR heating. Of special interest has been the insight into plasma performance gained by utilizing a different heating scheme other than the usual NBI. Utilizing ICRF heating allows control over the power deposition profile independent of the plasma fueling profile. In addition, by varying the minority concentration the power split between ion and electron heating can be varied. Confinement has been examined in high recycling gas fueled discharges, low recycling supershot plasmas, and peaked density pellet fueled discharges. Global confinement is found not to be affected by the method or localization of plasma heating, but the calculated local diffusivities vary with the power deposition profile to yield similar local values. In addition, sawtooth stabilization observed with ICRF heating has been investigated and found to occur in qualitative agreement with theory. ICRF sawtooth stabilized discharges exhibit peaked temperature and density profiles and have a safety factor q which appears to fall well below unity on axis. 11 refs., 10 figs

Availability note (English)

MF available from INIS under the Report Number; OSTI as DE91006631; NTIS; INIS; US Govt. Printing Office Dep.

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Additional details

Publishing Information

Imprint Pagination
27 p.
Report number
CONF-9011127--14

Conference

Title
32. annual meeting of the American Physical Society - Division of Plasma Physics (APS/DPP).
Dates
12-16 Nov 1990.
Place
Cincinnati, OH (USA).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
22032667
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BEAM INJECTION HEATING; CHARGED-PARTICLE TRANSPORT; ICR HEATING; PELLET INJECTION; PLASMA CONFINEMENT; SAWTOOTH OSCILLATIONS; TFTR TOKAMAK
Descriptors DEC
CLOSED PLASMA DEVICES; CONFINEMENT; HEATING; HIGH-FREQUENCY HEATING; OSCILLATIONS; PLASMA HEATING; RADIATION TRANSPORT; THERMONUCLEAR DEVICES; TOKAMAK DEVICES

Optional Information

Contract/Grant/Project number
Contract AC02-76CH03073