I. Gallardo González¹⁴, A. Higginbotham¹⁵, A. E. Hussein¹, D. A. Jaroszynski¹⁶, A. S. Joglekar^17,4, B. Kettle¹⁰, K. Krushelnick^1,4, N. Lemos⁶, N. C. Lopes^10,18, C. Lumsden¹⁵, O. Lundh¹⁴, S. P. D. Mangles¹⁰, K. G. Miller¹⁹, W. Mori¹⁹, Z. Najmudin¹⁰, Q. Qian¹, P. P. Rajeev⁷, D. Seipt^1,2,3,20,21, M. Shahzad¹⁶, M. Šmíd¹¹, R. Spesyvtsev¹⁶, D. R. Symes⁷, G. Vieux¹⁶, L. Willingale^1,2,3, J. C. Wood¹⁰, and A. G. R. Thomas^1,2,3,4,†

• ¹Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA
• ²The Cockcroft Institute, Keckwick Lane, Daresbury, WA4 4AD, United Kingdom
• ³Physics Department, Lancaster University, Lancaster LA1 4YB, United Kingdom
• ⁴Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA
• ⁵School of Mathematics and Physics, Queen’s University Belfast, BT7 1NN Belfast, United Kingdom
• ⁶Lawrence Livermore National Laboratory (LLNL), P.O. Box 808, Livermore, California 94550, USA
• ⁷Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
• ⁸Department of Medical Physics and Biomedical Engineering, University College London, London WC1E 6BT, United Kingdom
• ⁹Diamond Light Source, Harwell Science and Innovation Campus, Fermi Avenue, Didcot OX11 0DE, United Kingdom
• ¹⁰The John Adams Institute for Accelerator Science, Imperial College London, London, SW7 2AZ, United Kingdom
• ¹¹Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328, Dresden, Germany
• ¹²Technische Universität Dresden, 01062, Dresden, Germany
• ¹³Institute of Physics of the ASCR, Na Slovance 2, Prague 182 21, Czech Republic
• ¹⁴Department of Physics, Lund University, P.O. Box 118, S-22100, Lund, Sweden
• ¹⁵York Plasma Institute, Department of Physics, University of York, York YO10 5DD, United Kingdom
• ¹⁶SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom
• ¹⁷Ergodic LLC, San Francisco, California 94117, USA
• ¹⁸GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, U.L., Lisboa 1049-001, Portugal
• ¹⁹Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
• ²⁰Helmholtz Institut Jena, Fröbelstieg 3, 07743 Jena, Germany
• ²¹GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany

• ^*Contact author: yongm@umich.edu
• ^†Contact author: agrt@umich.edu