1. Pacific Northwest National Laboratory, Richland, WA 99352, USA
2. Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
3. Department of Physics, University of Washington, Box 351560, Seattle, WA 98195-1560, USA
4. Department of Physics, Yale University, New Haven, Connecticut 06511, USA
5. SLAC Linear Accelerator Center, Menlo Park, CA 94025-7015, USA
6. National High Magnetic Field Laboratory, Tallahassee, FL 32310, USA
7. Dipartimento di Fisica e Astronomia, Padova, Italy
8. Helmholtz Institute — Johannes Gutenberg University, Mainz, Germany and UC Berkeley, Berkeley, CA, USA
9. William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455, USA
10. University of Sheffield, Sheffield, UK
11. University of Chicago, Chicago, IL 60637, USA
12. Northwestern University, Evanston, IL 60208, USA
13. Max-Planck-Institut fur Physik (Heisenberg-Institut), Fohringer Ring 6 München 80805, Germany
14. Center for Axion and Precision Physics Research, Institute for Basic Science (IBS/CAPP), Daejeon 34051, Republic of Korea
15. Kings College London, London, UK
16. School of Physics, The University of Sydney, Camperdown, NSW 2006, Australia
17. KITP Kanazawa University, Kakuma-Machi, Kanazawa 920-1192, Japan
18. Laboratory for Nuclear Science, Massachusetts Institute of Technology Cambridge, MA 02139, USA
19. Fermi National Accelerator Laboratory, Batavia, IL 60510, USA
20. DESY, Hamburg, Germany
21. ARC Centre of Excellence for Engineered Quantum Systems and ARC Centre of Excellence for Dark Matter Particle Physics, Department of Physics, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
22. University of British Columbia, Dept. of Physics, Vancouver, BC, Canada