1. Insititute of Laser Engineering, Osaka University, Suita 567-0871, Japan
2. National Institutes for Quantum and Radiological Science and Technology, Tokai 319-1106, Japan
3. Graduate School of Engineering, Osaka University, Suita 567-0871, Japan
4. Tokamak Energy Ltd, 173 Brook Dr., Milton, Abingdon OX14 4SD, United Kingdom
5. Fukui University of Technology, Fukui 910-0028, Japan
6. Centre for Plasma Physics, School of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, United Kingdom