The Hiroshima synchrotron radiation center (HiSOR) is the only one synchrotron radiation facility that is attached to a national university in Japan. It was established in 1996, as part of the academic policies of the Japanese government. A compact 700 MeV electron-storage ring, called HiSOR (the whole center is often referred to as HiSOR), produces synchrotron radiation in the ultraviolet and soft x-ray range. This photon energy range is suitable for studying electronic states (energy-band dispersions, Fermi surface shapes, spin polarization, and many-body interactions) in solids. As described below, circular dichroism in the vacuum ultraviolet region is also very useful for the structural study of biomolecules in solution. The mission of the center is, therefore, to promote advanced research in the field of condensed matter physics using synchrotron radiation in the ultraviolet and soft x-ray range, as well as to develop human resources.
In 2010, the center has been authorized as a"Joint Usage / Research Center"by the Ministry of Education, Culture, Sports, Science and Technology (MEXT). As a result of extensive research activities in collaboration with researchers from inside and outside of Japan, the center was graded"A"for the 1st term-end evaluation in 2015 by the MEXT. In 2016, the center's authorization as the Joint Usage / Research Center was extended for 6 more years.
We call for proposals twice a year (Period A: April – October, Period B: November – March) to timely meet beamtime requests. At the same time, we reserve part of the available beamtime for urgent proposals of high scientific impact. During the fiscal year 2016, 240 researchers (actual number), including undergraduate and graduate students, completed 120 proposals. From 2004 to 2016, we have collaborated with researchers from 64 institutions in Japan, and 56 institutions abroad. About 20% of the researchers were from abroad, providing domestic students with an international atmosphere in the center.