Title :
Lower hybrid system design for the Tokamak Physics Experiment
Author :
Goranson, P.L. ; Conner, D.L. ; Swain, D.W. ; Yugo, J.J. ; Bernabei, S. ; Greenough, N.
Author_Institution :
Oak Ridge Nat. Lab., TN, USA
fDate :
30 Sep-5 Oct 1995
Abstract :
The lower hybrid (LH) launcher configuration has been redesigned to integrate the functions of the vertical four-way power splitter and the front waveguide array (front array). This permits 256 waveguide channels to be fed by only 64 waveguides at the vacuum window interface. The resulting configuration is a more compact coupler, which incorporates the simplicity of a multijunction coupler while preserving the spectral flexibility of a conventional lower hybrid launcher. Other spin-offs of the redesign are reduction in thermal incompatibility between the front array and vacuum windows, improved maintainability, in situ vacuum window replacement, a reduced number of radio frequency (rf) connections, and a weight reduction of 7300 kg. There should be a significant cost reduction as well
Keywords :
Tokamak devices; antennas in plasma; fusion reactor design; fusion reactors; plasma hybrid waves; plasma radiofrequency heating; Tokamak Physics Experiment; cost reduction; front waveguide array; in situ vacuum window replacement; lower hybrid system design; maintainability; multijunction coupler; spectral flexibility; thermal incompatibility; vacuum window interface; vacuum windows; vertical four-way power splitter; waveguide channels; Bellows; Coils; Costs; Flanges; Laboratories; Neutrons; Phased arrays; Physics; Plasma waves; Tokamaks;
Conference_Titel :
Fusion Engineering, 1995. SOFE '95. Seeking a New Energy Era., 16th IEEE/NPSS Symposium
Conference_Location :
Champaign, IL
Print_ISBN :
0-7803-2969-4
DOI :
10.1109/FUSION.1995.534479