Title :
Overview of the Microwave Tokamak Experiment operation and developments
Author :
Lang, D.D. ; Allen, S.L. ; Bell, H.H.
Author_Institution :
Lawrence Livermore Nat. Lab., CA, USA
fDate :
30 Sep-3 Oct 1991
Abstract :
The Microwave Tokamak Experiment (MTX) is being operated to demonstrate the feasibility of using intense microwave pulses (up to 6 GW peak power) from a free electron laser (FEL) to provide electron cyclotron heating for use in tokamaks, particularly high field machines. Initial results were obtained with the single pulse 140 GHz FEL at peak power levels of 200 to 400 MW late in 1989. Due to excessive transverse electron beam motion, and arcing in the accelerator cells, the accelerator was modified. These modifications have been successfully tested on a small portion of the rebuilt accelerator and have been incorporated in the remaining portion of the accelerator. A 140 GHz, 400 kW gyrotron was used to perform preliminary heating experiments during the fall of 1990. This same gyrotron system is serving as the master oscillator for the burst mode FEL. The new IMP steady state wiggler will be used to produce the high power microwaves for the burst mode. The FE construction has been completed, and it will be used for heating experiments scheduled for this fall
Keywords :
Tokamak devices; fusion reactor theory and design; plasma production and heating by laser beam; plasma toroidal confinement; MTX; Microwave Tokamak Experiment; arcing; burst mode FEL; electron cyclotron heating; free electron laser; gyrotron system; high field machines; intense microwave pulses; master oscillator; steady state wiggler; transverse electron beam motion; Cyclotrons; Electromagnetic heating; Electron accelerators; Free electron lasers; Gyrotrons; Life estimation; Masers; Optical pulses; Power lasers; Tokamaks;
Conference_Titel :
Fusion Engineering, 1991. Proceedings., 14th IEEE/NPSS Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0132-3
DOI :
10.1109/FUSION.1991.218924