ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
Capability of beam-energy control during a beam pulse has been demonstrated in the JT-60 neutral beam injection system. In addition to the acceleration voltage, the acceleration current and magnetic field separating residual ion beams were simultaneously varied. A preprogram control was adopted to cope with the relatively long time constant of the magnetic field due to the eddy current induced in the magnet core. The overall time constant is about 0.4 s. Beam-energy control was first tested in the prototype injector unit for JT-60 and then applied in JT-60 heating experiments. By advancing the idea demonstrated here, it is possible to design future neutral beam systems with real-time beam-energy control that follows target plasma evolutions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1141847
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