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Latest News
Commercial nuclear innovation "new space" age
In early 2006, a start-up company launched a small rocket from a tiny island in the Pacific. It exploded, showering the island with debris. A year later, a second launch attempt sent a rocket to space but failed to make orbit, burning up in the atmosphere. Another year brought a third attempt—and a third failure. The following month, in September 2008, the company used the last of its funds to launch a fourth rocket. It reached orbit, making history as the first privately funded liquid-fueled rocket to do so.
Daniela Farina
Fusion Science and Technology | Volume 52 | Number 2 | August 2007 | Pages 154-160
Technical Paper | Electron Cyclotron Wave Physics, Technology, and Applications - Part 1 | doi.org/10.13182/FST07-A1494
Articles are hosted by Taylor and Francis Online.
The theoretical framework of quasi-optical propagation power absorption and driven current of a Gaussian beam of electron cyclotron (EC) waves in a general tokamak equilibrium implemented in the code GRAY is presented. Within the framework of the complex eikonal approach, the propagation of a general astigmatic Gaussian beam is described in terms of a set of coupled rays, allowing for diffraction effects. The computation of the EC wave absorption and current drive is performed for each ray of the beam, by means of a relativistic dispersion relation for EC waves and of a neoclassical response function for the current. The code has been designed and tested for calculations of propagation, power absorption, and current drive of realistic EC beams in ITER.