Title :
Design studies of the collector sweeping system for the 2 MW 170 GHz coaxial gyrotron for ITER
Author :
Illy, S. ; Danilov, I. ; Raff, S. ; Piosczyk, B.
Author_Institution :
Inst. fur Hochleistungsimpuls-und Mikrowellentechnik, Forschungszentrum Karlsruhe, Leopoldshafen, Germany
fDate :
27 Sept.-1 Oct. 2004
Abstract :
The design of the collector for the 2 MW coaxial gyrotron has been verified taking into account the effect of eddy currents in the collector walls by using the ANSYS finite element code. As a result, it has been found that the eddy currents in the walls significantly influence the sweeping behaviour of the electron beam along the collector surface. An estimation according to the well known skin effect is therefore not sufficient. This modified field distribution results in a strong reduction of the sweeping range and thus in an unacceptable increase of the power loading on the collector wall.
Keywords :
copper; eddy currents; electron beams; finite element analysis; gyrotrons; skin effect; 170 GHz; 2 MW; ANSYS finite element code; Cu; ITER; coaxial gyrotron; collector sweeping system; collector walls; copper; eddy currents; electron beam; international thermonuclear experimental reactor; power loading; skin effect; Coaxial components; Coils; Eddy currents; Electron beams; Electron emission; Finite element methods; Gyrotrons; Inductors; Magnetic fields; Skin effect;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422039
