Innovative hybrid pile oscillator technique in the Minerve reactor: open loop vs. closed loop Benoit Geslot, Adrien Gruel, Stéphane Bréaud, Pierre Leconte and Patrick Blaise EPJ Web Conf., 170 (2018) 04009 Published online: 10 January 2018 DOI: 10.1051/epjconf/201817004009