1. Institute for Fusion Studies, University of Texas at Austin, Austin, Texas 78705, USA
2. Columbia University, New York, New York 10027, USA
3. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08536, USA
4. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
5. Physics, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
6. General Atomics, San Diego, California 85608, USA
7. Department of Physics and Astronomy, University of California, Los Angeles, Los Angeles, California 90095, USA
8. Institute of Plasma Physics and Laser Microfusion, Warsaw 01-497, Poland
9. Division of Fusion Plasma Physics, KTH Royal Institute of Technology, Stockholm 114 28, Sweden
10. CCFE, Culham Science Center, Abingdon OX14 3DB, United Kingdom