1. University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0417
2. Karlsruhe Institute of Technology, Institute for Nuclear and Energy Technologies, P.O. Box 3640 76021 Karlsruhe, Germany
3. Fusion Nuclear Technology Consulting, Fliederweg 3, 76351 Linkenheim-Hochstetten, Germany