New advanced launcher for lower hybrid current drive on Tore Supra

摘要

A new actively cooled advanced launcher is being built for Tore Supra LHCD to inject 4 MW during 1000 s at 3.7 GHz, at a power density of 25 MW/m~2 (a conservative value observed in Tore Supra experiments). It is made from An array of 6x48 active and 6x9 passive waveguides;. The design uses technologies which are relevant for a next step Machine such that it can: (I) withstand a plasma radiated flux of 0.15 MW/m~2; (ii) radiate power with spectra having Peak N// values of 2.02±0.35; (iii) withstand a total torque of 8.6 10~4 N m during disruptions; (iv) allow an antenna 20 cm radial stroke adjustable in real time,. (v) withstand a convected power flux of 10 MW/m~2 on its guard limiter made of CFC tiles.l A prototype of each new component of this antennal has been tested succesfully at the nominal power with a pulse length of 1000 s.