1. Key Laboratory for Laser Plasmas (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
2. Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University, Shanghai 200240, China
3. Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
4. Institute of Physics of the ASCR, ELI Beamlines Project, Na Slovance 2, 18221 Prague, Czech Republic
5. Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan
6. The Graduate School for the Creation of New Photonics Industries, Hamamatsu 431-1202, Japan
7. SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom
8. Tsung-Dao Lee Institute, Shanghai 200240, China
9. Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China