1. Max–Planck–Institut für Quantenoptik, 85748 Garching, Germany
2. Johannes Gutenberg-Universität Mainz, QUANTUM, Institut für Physik & Exzellenzcluster PRISMA, 55099 Mainz, Germany
3. Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 75005 Paris, France
4. LIBPhys, Department of Physics, University of Coimbra, 3004-516 Coimbra, Portugal
5. Institut für Strahlwerkzeuge, Universität Stuttgart, - 70569 Stuttgart, Germany
6. Laboratório de Instrumentação, Engenharia Biomédica e Física da Radiação (LIBPhys-UNL), Departamento de Física, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
7. I3N, Departamento de Física, Universidade de Aveiro, 3810-193 Aveiro, Portugal
8. Physics Department, Yale University, New Haven, CT 06520-8121, U.S.A.
9. Paul Scherrer Institute, 5232 Villigen–PSI, Switzerland
10. Dausinger & Giesen GmbH, Rotebühlstr. 87, 70178 Stuttgart, Germany
11. Institute for Particle Physics, ETH Zurich, 8093 Zurich, Switzerland
12. Département de Physique, Université de Fribourg, 1700 Fribourg, Switzerland
13. Physics Department, National Tsing Hua University, Hsinchu 300, Taiwan
14. Department of Chemistry, Princeton University, Princeton, NJ 08544-1009, U.S.A.