Title :
ITER millimeter-wave CTS diagnostic option
Author :
Woskov, P.P. ; Cohn, D.R. ; Gilmore, J. ; Machuzak, J.S. ; Rhee, D.Y.
Author_Institution :
Plasma Fusion Center, MIT, Cambridge, MA, USA
Abstract :
Localized alpha-particle velocity distribution and density, ion temperature, DT fuel ratio, and internal magnetic field pitch angle can all be potentially diagnosed by a collective Thomson scattering system. Relativistic electron cyclotron calculations and TORAY ray tracing for 6 tesla ITER parameters indicate that 90 GHz is an optimum frequency for this diagnostic. With 400 kW at the plasma and a 90° scattering angle, signal to noise ratios approaching 100 are possible for 0.5% n e, alpha-particle fractions and 100 ms integration times. A millimeter wave system would be robust and adaptable to the ITER environment and access
Keywords :
Tokamak devices; fusion reactor design; fusion reactor fuel; fusion reactor instrumentation; plasma density; plasma diagnostics; plasma temperature; 100 ms; 400 kW; 6 T; 90 GHz; DT fuel ratio; ITER millimeter-wave CTS diagnostic option; ITER parameters; TORAY ray tracing; alpha-particle fractions; collective Thomson scattering system; integration times; internal magnetic field pitch angle; ion temperature; localized alpha-particle density; localized alpha-particle velocity distribution; millimeter wave system; optimum frequency; relativistic electron cyclotron calculations; signal to noise ratios; Cyclotrons; Electrons; Frequency; Fuels; Magnetic fields; Plasma diagnostics; Plasma temperature; Ray tracing; Scattering; Temperature distribution;
Conference_Titel :
Fusion Engineering, 1993., 15th IEEE/NPSS Symposium on
Conference_Location :
Hyannis, MA
Print_ISBN :
0-7803-1412-3
DOI :
10.1109/FUSION.1993.518292
