Computer Science – Performance
Scientific paper
Sep 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..485..288s&link_type=abstract
The thirteenth topical conference on radio frequency power in plasmas. AIP Conference Proceedings, Volume 485, pp. 288-295 (199
Computer Science
Performance
5
Plasma Heating By Particle Beams, Tokamaks, Spherical Tokamaks, Theory, Design, And Computerized Simulation
Scientific paper
RF heating and current drive with ion cyclotron waves and Lower Hybrid waves have been crucial for the development of the Optimized Shear scenario on JET to high performance. Peaked electron temperature profiles and improved energy confinement could be obtained with electron heating both from LHCD and ICRH during plasma current ramp up. ICRH and NBI comparisons allow to separate heating and fueling and suggest a dominant role of core heating in the formation of an Internal Transport Barrier (ITB). ICRH and NBI powers are there equivalent. Pressure profile control by varying the composition of centrally peaked ICRF and broader NBI deposition improves MHD stability. Current profile modifications in a wide range have been obtained with LHCD and in combination with NBI during current ramp up. During the high performance phase, however, LH coupling degrades strongly due to the steep edge density gradient resulting in a drop of the density in front of the LH antenna to the cut-off density. High fusion performance achieving simultaneously high beta values and bootstrap currents is predicted in scenario modeling using pressure and current profile control with ICRF and LHCD.
Alper B.
Baranov Yu. F.
Bickley Abigail
Bondeson A.
Borba D.
No associations
LandOfFree
The role of RF in the optimized shear scenario on JET does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The role of RF in the optimized shear scenario on JET, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The role of RF in the optimized shear scenario on JET will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1768017