A new mechanism for sawtooth period control M. Lauret, F. Felici, G. Witvoet, T. Goodman, G. Vandersteen, E. Westerhof, M. Steinbuch, O. Sauter and M. de Baar EPJ Web of Conferences, 32 (2012) 02008 Published online: 06 September 2012 DOI: 10.1051/epjconf/20123202008