Title :
Upgrade to the ECH System on the DIII-D Tokamak
Author :
Gorelov, I.A. ; Callis, R.W. ; Ellis, R.A. ; Kajiwara, K. ; Lohr, J. ; Poncel, I.D.
Author_Institution :
General Atomics, San Diego
Abstract :
A significant upgrade to the 110 GHz DIII-D ECH system was begun in 2005. Two short pulse (< 2 s) GYCOM gyrotrons were replaced by CPI diode gyrotrons having acceptance parameters of 1.0 MW, 5 s and designed pulse length of 10 s. In addition, a CPI gyrotron with depressed collector, which has demonstrated 1.3 MW for short pulses, was installed and is being tested. Two CPI gyrotrons, which have experienced collector failures, are being repaired.
Keywords :
Tokamak devices; gyrotrons; millimetre wave tubes; CPI diode gyrotrons; CPI gyrotron; DIII-D Tokamak; ECH system; GYCOM gyrotrons; acceptance parameters; collector failures; depressed collector; frequency 110 GHz; millimeter waves systems; power 1.0 MW; power 1.3 MW; time 10 s; time 5 s; Cyclotrons; Fatigue; Gyrotrons; Laboratories; Physics; Pollution measurement; Power supplies; Pulse measurements; Testing; Tokamaks;
Conference_Titel :
Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0400-2
Electronic_ISBN :
1-4244-0400-2
DOI :
10.1109/ICIMW.2006.368430
