1975 – 1979, Dan Riel; SUNY, Stony Brook, USA
1979 – 1983, Edward H.Kobisk; ORNL, USA
1983 – 1986, Jan van Audenhove; CBNM, Geel, Belgium
1986 – 1990, Harold L. Adair; ORNL, USA
1990 – 1994, Hans Jörg Maier; LMU Munich, Germany
1994 – 1998, Bill Lozowski; IUCF, Bloomington, USA
1998 – 2003, Peter Maier-Komor; TUM, Munich, Germany
2003 – 2007, David Gilliam; NIST, Gaithersburg, USA
2007 – 2012, Anna Stolarz; HIL UW, Warsaw, Poland
2012 – 2016, John Greene; ANL, Argonne, USA
2016 – 2020, Klaus Eberhardt; JGU, Mainz, Germany