1. Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut 1 , CH-5232 Villigen PSI, Switzerland
2. Nanoscience Center, Niels Bohr Institute, University of Copenhagen 2 , DK-2100 Copenhagen Ø, Denmark
3. Laboratory for Neutron and Muon Instrumentation, Paul Scherrer Institut 3 , CH-5232 Villigen PSI, Switzerland
4. Laboratory for Quantum Magnetism, Ecole Polytechnique Fédérale de Lausanne (EPFL) 4 , CH-1015 Lausanne, Switzerland
5. Laboratory for Particle Physics, Paul Scherrer Institut 5 , CH-5232 Villigen PSI, Switzerland