1. SLAC National Accelerator Laboratory, Menlo Park
2. California
3. USA
4. Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park
5. Department of Physics and Astronomy, University of Nebraska–Lincoln
6. Lincoln
7. Physics Department
8. Stanford University
9. School of Natural and Environmental Sciences
10. Newcastle University
11. Newcastle upon Tyne
12. UK