  The Travelling Wave Array (TWA) antenna was proposed as a promising
alternative for Ion Cyclotron Resonant Heating (ICRH) in future fusion
reactors. In this study, the possibility to make a TWA compatible with a
tungsten environment like the WEST tokamak is assessed. For this purpose, two
aspects of the antenna are investigated: the power spectrum and the near fields
excited by the antenna. The sensitivity of these parameters to load and
capacitor layout variations is taken into account while satisfying a proper
antenna frequency response. The sensitivity of the power spectrum to frequency
variation is also investigated to allow the possibility of fast feedback of the
power deposition into the core plasma of WEST. The high resilience of the TWA
to these variations is demonstrated and the main parameters of the TWA expected
in WEST are compared to the WEST Q2 antenna for the same loading. Possible
optimizations of the TWA antenna are discussed. The present study is fully
transferable to a fusion reactor like DEMO or ARC.
