1. Institute of Physics “Gleb Wataghin”; University of Campinas-UNICAMP; Rua Sérgio Buarque de Holanda, 777, Cidade Universitária Zeferino Vaz-Barão Geraldo Campinas-SP 13083-859 Brazil
2. Swiss Light Source; Paul Scherrer Institut; CH-5232 Villigen PSI Switzerland
3. Institute for Quantum Electronics; Eidgenössische Technische Hochschule (ETH) Zürich; Auguste-Piccard-Hof 1 CH-8093 Zürich Switzerland
4. SwissFEL; Paul Scherrer Institut; CH-5232 Villigen PSI Switzerland