JET-EP ITER-like ICRF antenna

Whereas the essential components for power generation and transmission on an ITER-sized ICRF plant are readily available, or only require modest extrapolation of present day ICRF systems, the IC launching structure itself is regarded as needing development, validation and convincing demonstration. During the ITER-EDA, the design requirements of the Next Step device have resulted in increasingly higher values for this power density, going from less than 1 MW/m2 with the launcher integrated in the blanket, to presently about 10 MW/m2 for the present ITER, where the launcher is required to fit inside an equatorial port. The presently proposed JET-Enhanced Performance project ITER-like ICRF launcher, due for installation during the 2004 shutdown, mainly features a high power density of about 8 MW/m2 at a relevant coupling of 4 Ohm/m and 1C heating scenarios at frequencies from 30 to 55 MHz for pulses up to 20 seconds with a tolerance to load variations due to ELMs.