The electron cyclotron resonant heating system on the DIII-D tokamak

被引：32
|
作者：
Lohr, J [1 ]
Gorelov, YA [1 ]
Kajiwara, K [1 ]
Ponce, D [1 ]
Callis, RW [1 ]
Doane, JL [1 ]
Ellis, RL [1 ]
Grunloh, HJ [1 ]
Moeller, CP [1 ]
Peavy, J [1 ]
Prater, R [1 ]
Tooker, JF [1 ]
机构：
[1] Gen Atom Co, DIII D Natl Fus Facil, San Diego, CA 92186 USA
来源：
FUSION SCIENCE AND TECHNOLOGY | 2005年 / 48卷 / 02期
关键词：
electron cyclotron heating; gyrotron systems; millimeter microwaves;
D O I：
10.13182/FST05-A1073
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
sIn the DIII-D electron heating and current drive installation, up to six gyrotron microwave generators in the I-MW class at pulse lengths up to 5 s have been operated simultaneously. The frequency for all the gyrotrons is 110 GHz, corresponding to the second harmonic of the electron gyrofrequency at. 2 T The peak generated power has been > 4 MW with peak injected power slightly greater than 3 MW The radio frequency (rf) generators are located remotely and are connected to the tokamak by up to 100 m of evacuated circular corrugated waveguide carrying the HE1.1 mode with overall transmission efficiency, including coupling to the waveguide, of up to 75%. Ancillary equipment for polarization control, beam switching, power monitoring, control of launch direction, and system protection has been developed. The system has been used to support a wide variety of physics experiments, including control of magnetohydrodynamic modes, current density profile modifications, basic plasma heating and current drive, transport studies, and rf-assisted start-up. The gyrotron complex is being upgraded by the acquisition of additional tubes with 5- to 10-s pulse length capability.
引用
收藏
页码：1226 / 1237
页数：12
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