Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 16
Book Description
ICRF Results in D-T Plasmas in JET and TFTR and Implications for ITER.
Author: Seventh Carolus Magnus Summer School on Plasma and Fusion Energy Physics
Author: Eighth Carolus Magnus Summer School on Plasma and Fusion Energy Physics
Author: ICRF Heating of Deuterium-tritium Plasmas in TFTR.
Author: H. G. AdlerPublisher:
ISBN:
Category : Tokamak Fusion Test Reactor (Project).
Languages : en
Pages : 13
Book Description
Sixth Carolus Magnus Euro-Summer School on Plasma and Fusion Energy Physics
Author: Fusion Technology
Author: Chemical Abstracts
Author: Results from D-T Experiments on TFTR and Implications for Achieving an Ignited Plasma
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 43
Book Description
Progress in the performance of tokamak devices has enable not only the production of significant bursts of fusion energy from deuterium-tritium plasmas in the Tokamak Fusion Test Reactor (TFTR) and the Joint European Torus (JET) but, more importantly, the initial study of the physics of burning magnetically confined plasmas. As a result of the worldwide research on tokamaks, the scientific and technical issues for achieving an ignited plasma are better understood and the remaining questions more clearly defined. The principal research topics which have been studied on TFTR are transport, magnetohydrodynamic stability, and energetic particle confinement. The integration of separate solutions to problems in each of these research areas has also been of major interest. Although significant advances, such as the reduction of turbulent transport by means of internal transport barriers, identification of the theoretically predicted bootstrap current, and the study of the confinement of energetic fusion alpha-particles have been made, interesting and important scientific and technical issues remain. In this paper, the implications for the TFTR experiments for overcoming these remaining issues will be discussed.
Proceedings of the Fifth Carolus Magnus Euro-Summer School on Plasma and Fusion Energy Physics
Author: ICRF Heating and Transport of Deuterium-tritium Plasmas in TFTR.
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 8
Book Description
This paper describes results of the first experiments utilizing high-power ion cyclotron range of frequency (ICRF) to heat deuterium-tritium (D-T) plasmas in reactor-relevant regimes on the Tokamak Fusion Test Reactor (TFTR). Results from these experiments have demonstrated efficient core, second harmonic, tritium beating of D-T supershot plasmas with tritium concentrations ranging from 6%-40%. Significant direct ion heating on the order of 60% of the input radio frequency (rf) power has been observed. The measured deposition profiles are in good agreement with two-dimensional modeling code predictions. Energy confinement in an rf-heated supershot is at least similar to that without rf, and possibly better in the electron channel. Efficient electron heating via mode conversion of fast waves to ion Bernstein waves (IBW) has been demonstrated in ohmic, deuterium-deuterium and DT-neutral beam injection plasmas with high concentrations of minority 3He (n{sub 3He}/n{sub e} = 15% - 30%). By changing the 3He concentration or the toroidal field strength, the location of the mode-conversion radius was varied. The power deposition profile measured with rf power modulation indicated that up to 70% of the power can be deposited on electrons at an off-axis position. Preliminary results with up to 4 MW coupled into the plasma by 90-degree phased antennas showed directional propagation of the mode-converted IBW. Analysis of heat wave propagation showed no strong inward thermal pinch in off-axis heating of an ohmically-heated target plasma in TFTR.