Title :
Diamond gyrotron windows at the DIII-D tokamak
Author :
Gorelov, I.A. ; Lohr, J. ; Callis, R.W. ; Kajiwara, K. ; Ponce, D.
Author_Institution :
Gen. Atomics, San Diego, CA, USA
Abstract :
New thermal calculations have been performed for artificially grown diamond output windows produced by chemical vapor deposition (CVD) installed on 110 GHz 1 MW gyrotrons. These results can be compared with infrared (IR) monitoring of the windows during 5 s pulses. A new prototype depressed collector gyrotron with output power in excess of 1.0 MW at 110 GHz is expected to be tested to full parameter operation at the DIII-D facility. Predicted maximum temperature and temperature profiles are presented based on the characteristics of the particular diamond disk installed on this gyrotron and the model.
Keywords :
CVD coatings; Tokamak devices; diamond; discs (structures); gyrotrons; millimetre wave tubes; thermal analysis; 1 MW; 110 GHz; 5 s; DIII-D tokamaks; chemical vapor deposition; depressed collector gyrotron; diamond gyrotron windows; thermal calculation; Chemical vapor deposition; Gyrotrons; Infrared surveillance; Monitoring; Power generation; Predictive models; Prototypes; Temperature; Testing; Tokamaks;
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.2005.1572560
