We present the differents steps of our FEL program called ONDINE at CESTA. The goal is to produce multi-megawatt pulses at 35 GHz. The first step uses the pulse line machine EUPHROSYNE which delivers an electron beam of 1.3 kA at 2.5 MeV from a thermoionic cathode. Beam transport studies are under way. The second step will use the injector of the induction linac LELIA (1.5 MeV, 3 kA, 1 Hz repetition rate). Finally, we will utilize the induction linac LELIA (3 MeV, 3 kA, 5 kHz) with a permanent magnet wiggler.