Other
Scientific paper
Jul 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..434..233p&link_type=abstract
The first international conference on atomic and molecular data and their standards. AIP Conference Proceedings, Volume 434, pp
Other
1
Magnetic Confinement And Equilibrium, Other Confinement Methods, Optical Measurements, Atomic Spectra
Scientific paper
Atomic processes have played a key role in the success of the present and the next generation of magnetically and inertially confined controlled fusion experiments. Magnetic fusion experiments are beginning to access the plasma regimes needed for fusion reactors. Recent experiments on the TFTR tokamak at Princeton and the JET tokamak at Abingdon, UK, have produced fusion powers of 10-16 MW and temperatures in the 10 to 40 keV range. These achievements were made possible by impurity control and high power auxiliary heating, which both rely upon the successful utilization of atomic processes. Based on these and other experimental successes, in 1988 the US, Europe, Japan and Russia began participation in the International Thermonuclear Experimental Reactor project (ITER), with the goal of designing, constructing and operating a long pulse, ignited tokamak. The engineering design portion of the project will be completed in July 1998, and the ITER partners are now discussing an agreement for construction. Experiments on JT-60 U, JET, DIII-D, Alcator C-Mod, ASDEX Upgrade and other tokamaks together with computational models indicate that atomic processes can be used to reduce the peak heat fluxes on the wall to acceptable levels, control the impurity level, and minimize the impact of plasma disruptions in ITER. Two large stellarators, an alternative to the tokamak, are being built in Japan and Germany and control of atomic processes will be essential for their success. Comparable progress has also been made in Inertial Confinement Fusion. Experiments on NOVA, OMEGA, GEKKO XII and other laser facilities with both direct drive and indirect drive targets produce temperatures in the multi-keV range and capsule compression levels that scale to ignition for the National Ignition Facility (NIF) now under construction at the Lawrence Livermore National Laboratory. Atomic processes play a key role in the pellet compression and heating and are essential for diagnostics.
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