Net electrical output rises rapidly with increasing deuterium beam energy for E^ < 400 keV, but rises only slowly above E^ ~ 1 MeV. tfe estimate that beam-driven steady-state reactors could be economically competitive with pulsed-lgnition reactors if cyclic-loading problems limit the toroidal magnetic field strength of pulsed reactors to < 85% of that allowed in steady-state reactors.
Analytic and two-dimensional computational solutions for the plasma parameters near a toroidally synnetric limiter are illustrated for the projected parameters of a Tokamak Fusion Core Experiment {TFCX). The temperature near the limiter plate is belo* 20 eV, except when the density 10 cm inside the limiter contact is 8 x 10' 3 cm~3 or less and the thermal diffusivity in the edge region is 2 x 10*cin 2 /s or less. Extrapolation of recent experimental data suggests that neither of these conditions is likely to be met near ignition in TFCX, 30 a low plasma temperature near the limiter should be considered a likely possibility. DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United Stales Government. Nether the United States Government nor any agency thereof, nor any or he* hZ^r.V!!' "? Wa " a '! ,y • eXPr05S " iraplicd ' °r assum « »* '^1 liability or responsi bly for the accuracy, completeness, or usefulness of any information, apparatus, product or process disclosed, or represents that its use would not infringe privately owned rights Reference ce here,n to any spec.no commercial product, process, or service by trade name, trademark, • ll.v ' ? "T ^, nM """"* Mns,i,u " ! m in ""y its endorsement, rrW mendauon, or favoring by the United Stales Government or any a R ency thereof. The Views UdtSLr " " MPrKSed herei " d° " 0t nKCSSariIy 5,a "<>' ""«' tho= 0 ' be United States Government or anv agency thereof. F.O.H. Instituut voor Plasmafysica, Bieuwegein, The Netherlands. MASTER mmurm OF res n»ar is m&
A method for prescribing appropriate boundary conditions for predictive simulations using flux-surface-averaged plasma transport codes is described. The model makes use of the present theoretical understanding of L and Hmode transport mechanisms and is constrained to be consistent with trends in existing data. It is calibrated against an ASDEX experiment and used to predict the edge behavior in CIT.
A simple and general method for applying the results of a microinstability analysis to models of the solar wind is described. Existing two‐fluid models are found to become unstable at heliocentric distances varying from 3 to 11 RS. The development of these ‘heat conduction’ microinstabilities affects the energy and momentum transport, observable wave spectrum, cosmic ray diffusion, and properties of minor ions in the solar wind. A proposal which would rationally modify the energy transport is developed. It is suggested that the plasma fluctuations observed near the earth could largely be a result of these instabilities. The observed temperatures and velocities of helium ions can be explained qualitatively in terms of resonant interaction with the different waves which are expected to be generated under different solar wind conditions.
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