1. Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA
2. SLAC National Accelerator Laboratory, Stanford University, Stanford, California 94305, USA
3. General Atomics, San Diego, California 92121, USA
4. Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
5. Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita 565-0871, Japan
6. Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA