1. EURATOM / UKAEA Fusion Association, Culham Science Centre, Abingdon, Oxon OX14 3DB, United Kingdom
2. Alfvén Laboratory, Royal Institute of Technology, Association EURATOM-VR, 100 44 Stockholm, Sweden
3. Tritium Laboratory, Forschungszentrum Karlsruhe, Association EURATOM, D-76021, Karlsruhe, Germany
4. School of Mathematical and Physical Sciences, University of Sussex, BN1 9QH Brighton, United Kingdom
5. VTT Processes, Association EURATOM-TEKES, P.O. Box 1608, 02044 VTT, Finland