Title :
Design and performance tests of a high power torus window for a remotely steered EC launcher
Author :
Heidinger, R. ; Danilov, I. ; Meier, A. ; Spaeh, P. ; Piosczyk, B. ; Thumm, M. ; Bongers, W.A. ; Graswincke, M. ; Lamers, B. ; Verhoeven, A.G.A.
Author_Institution :
Forschungszentrum Karlsruhe, Assoc. EURATOM-FZK, Karlsuhe, Germany
Abstract :
For the ITER remotely steered (RS) EC launcher which is designed to stabilise the neoclassical tearing modes (NTM) at the q=3/2 and q=2/1 surfaces by inducing off-axis current drive, a high performance CVD torus window with edge cooling has been designed and manufactured to allow off-axis transmission of up to 2 MW mm-wave power at 170 GHz. Its compatibility with the operation parameters of ITER cooling systems was demonstrated and its performance in a remotely steered beamline (steering range: -12° to 12°) was studied by low power tests which are to be complemented by high power, short pulse tests presently being initiated at the Forschungszentrum Karlsruhe.
Keywords :
CVD coatings; cooling; diamond; electron beam welding; plasma toroidal confinement; tearing instability; thermomechanical treatment; 170 GHz; CVD torus window; cooling systems; edge cooling; low power tests; neoclassical tearing modes; off-axis current drive; off-axis transmission; remotely steered EC launcher; remotely steered beamline; short pulse tests; Circuit testing; Cooling; Manufacturing; Mirrors; Optical beams; Optical resonators; Plasma confinement; Plastics; Stress; System testing;
Conference_Titel :
Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005. The Joint 30th International Conference on
Print_ISBN :
0-7803-9348-1
DOI :
10.1109/ICIMW.2005.1572666
