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Nuclear Science and Engineering
Fusion Science and Technology
Advanced reactors: Now comes the hard part
Designing a reactor is complicated but building one may be harder. Even companies that have had lots of practice haven’t always done it well. And all the power reactors in service today were built by companies that had years of experience in other kinds of big steam-electric power plants. In contrast, some of the creative new designs now moving toward commercialization come from start-ups that have never built anything at all. How should they prepare?
Won Ha Ko, Hoon Kyun Na, Seong-Heon Seo, Myeun Kwon (19P30)
Fusion Science and Technology | Volume 51 | Number 2 | February 2007 | Pages 295-297
Technical Paper | Open Magnetic Systems for Plasma Confinement | dx.doi.org/10.13182/FST07-A1380
Articles are hosted by Taylor and Francis Online.
The ion temperature, rotation velocity, and impurity density can be obtained from CHarge Exchange Recombination Spectroscopy (CHERS) diagnostics, one of active beam diagnostics, using NBI or DNB.We measure the charge exchange emission line of the carbon using CHERS and DNB system and analyze the ion temperature from the emission line in the RF heated HANBIT plasma. DNB system which has 27 kV beam voltage and 50 msec pulse width must be controlled critically to measure the exact ion temperature in the experiments.End loss ion temperature measured using energy analyzer is compared with the ion temperature obtained from the charge exchange emission line. The CHERS diagnostics has been widely used to measure ion temperature and poloidal rotation velocity in tokamak.