Author: J. H. RogersPublisher:
ISBN:
Category : Tokamak Fusion Test Reactor (Project)
Languages : en
Pages : 7
Book Description
ICRF Heating and Current Drive Experiments on TFTR.
Author: J. H. RogersPublisher:
ISBN:
Category : Tokamak Fusion Test Reactor (Project)
Languages : en
Pages : 7
Book Description
ICRF Heating and Current Drive Experiments on TFTR.
Author: J. H. RogersPublisher:
ISBN:
Category : Tokamak Fusion Test Reactor (Project).
Languages : en
Pages : 7
Book Description
Perspectives Gained from ICRF Physics Studies on TFTR.
Author: C. K. PhillipsPublisher:
ISBN:
Category : Tokamak Fusion Test Reactor (Project)
Languages : en
Pages : 4
Book Description
ICRF Direct Electron Heating Experiments in TFTR.
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 5
Book Description
Direct electron damping of the fast wave is a prerequisite to a viable current drive scenario for future steady-state tokamaks. It is also an attractive heating altemative to the standard ion resonance heating methods for DT experiments on TFTR because it does not require the addition of non-reactive ion species and avoids minority ion tails during studies of alpha-particle effects. The absence of minority ions in direct electron heating (DEH) also allows the use of RF power modulation to determine power deposition profiles and to carry out modulation transport studies to characterize electron transport in supershot plasmas, as described in this paper.
ICRF Heating During DT Experiments on TFTR
Author: J. HoseaModeling of High-power ICRF Heating Experiments on TFTR.
Author: M. G. BellExperiments Utilizing ICRF Heating on TFTR.
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 27
Book 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.
Energy Research Abstracts
Author: Scientific and Technical Aerospace Reports
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 538
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
ICRF Heating and Current Drive in TFTR Supershot Plasmas: Data Analysis and Interpretation of ICRF/edge Interactions. Research Progress Report
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The relevance of rf-sheath-plasma interactions to ICRF operation in TFTR has been studied. Screen-screen and screen-limiter rf sheaths have been identified and analyzed for the old and new Bay M geometries on TFIR, including sheath voltages driven by both feeders and the central antenna conductor. Calculations have been carried out to determine the effects of ICRF on edge transport (profile flattening by E [times] B convection), impurity influx ([delta]Z[sub eff]) and edge electron heating (FS glow phenomena) as a function of edge plasma parameters, rf power and antenna phasing. It was found that many of the experimentally observed ICRF-edge plasma interactions on TFIR are consistent with the predictions of rf sheath theory.