1. Faculty of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan
2. Japan Synchrotron Radiation Research Institute, SPring-8, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
3. Akkurate Oy, Kaarikatu 8b, 20760 Kaarina, Finland
4. Department of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
5. Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
6. Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA
7. Department of Physics, School of Engineering Science, LUT University, FI-53850 Lappeenranta, Finland