1977   Diploma-Thesis at Humboldt-Universitaet, Berlin, Germany
1977-1988  R&D in industry
1984-1987  JINR Dubna, Russia
since 1988  at DESY Zeuthen, Germany
since 1991  L3 Collaboration
1991-1992  CERN (L3)
since 1996  physics at the ILC
since 2003  PITZ
since 2005  work for a polarized positron source at the ILC

Committees