1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5198, Japan
SPring-8 Users Community (SPRUC) Secretariat
TEL: +81-(0)791-58-0970 FAX: +81-(0)791-58-0928 e-mail: users@spring8.or.jp

About the SPring-8 Users Community (SPRUC)

April 2012
June 2015
August 2016
July 2017
August 2018


The SPRUC is a user organization formed by SPring-8 users. In close cooperation with the Registered Institution for Facilities Use Promotion (JASRI) and the facility owner (RIKEN), the SPRUC aims to facilitate the sophistication and optimization of the facility use and the development of science and technology by building bridges between the SPring-8 and academia/industry. Interaction between members is expected to ensure the development and expansion of SR science and quantum beam science.


With a view to achieving the above goal, all users of SPring-8 shall automatically become members of the SPRUC upon completion of SPring-8 user registration. A Chair, a Board of Councilors, a Secretary, and several committees will conduct the business of the SPRUC. The Board of Councilors will have 30 councilors serving two-year terms (with half being elected every year). The councilors will be nominated by the representatives of 4 representing organizations (see below) from among the SPRUC members and elected by the SPRUC members through an electronic voting process. The Chair will be selected by the elected councilors and will appoint a Secretary. The Chair and the Secretary will serve two-year terms. The SPRUC will also have representing organizations, each of which has a representative, to obtain recommendations on the management policies of the SPRUC. The representing organizations will be nominated by the Board of Councilors every two years from among the universities, research institutes, and companies with which many SPring-8 users are affiliated and approved by the General Assembly. Users affiliated with the representing organizations shall select their representative through discussions from among expert colleagues who can put together the opinions of on-site researchers from users' perspective. The representatives of the representing organizations shall participate in the Conference of representing organizations, nominate candidates for councilors, provide recommendations on the activities of the SPRUC as experts.

Click here for enlarged organization chart.


  • The SPRUC shall be an interdisciplinary organization in which all SPring-8 users can participate to discuss the better use of SPring-8 and put their opinions together.
  • The SPRUC shall be an organization which will make a commitment to the operation and management of SPring-8 not only from users' point of view but also from a technological/social perspective.
  • The SPRUC should not be a place for each member's individual society activity; rather, the SPRUC shall act as an interface between academic/industrial research societies (associations) and SPring-8 by conducting surveys to determine user trends in cooperation with the Registered Institution for Facilities Use Promotion.

Message from the Chair

Based on the SPRUC Council’s decision, I am going to take a position as the 5th chair of SPring-8 user’s community what is called SPRUC from this April. Let me first overview the surroundings recent situation of SPRUC. This community began at April 2012 and number of registrants now exceeds 13,000. One of the most characteristic things is that the SPRUC contains more than 50 research groups, which tells us that the members are spread in a wide range of fields from basic to industrial and/or social sciences. I, myself, joined the SPRUC secretary section from April 2016 for 4 years (3rd-4th terms). The main issue that the SPRUC handles has been directed to the future-plan of SPring-8 beamlines/users and furthermore of the storage-ring. Let me shortly get back to what was discussed during 3rd-4th terms. A working-group was launched at December 2016 chaired by Prof. Akihiko Fujiwara (Kwansei Gakuin University). It targeted on “taskforce for beam-line technological advancement” with a purpose in a short term that an extensive discussion would promote a beamline upgrade by newly installing the cutting-edge detectors and measurement systems. In a mid or long-term, it was aimed to promote the system innovations being supposedly employed into the forthcoming new storage ring. SPring-8 symposium (annual user’s meeting) held in Hiroshima University at 2017 initiated a panel that activated a face-to-face communication between users and SPring-8 staffs. The panel took place three times until last summer at Okayama, where participants actively exchanged their ideas towards the beamline rearrangement and shared the latest information regarding the next SPring-8 plan. The discussion was extended to the workshop on the BL’s upgrade that took place for the first time on March 2019 and again on early February 2020. At the latest event, the specific plans of the BL’s rearrangement were displayed in the showcase and I witnessed, with a deep impression, the heat of discussion and the user’s passion, which definitely reminded me of its necessity to create the playground to extend such discussion for users.
Let me list our colleagues below;

    Vice Chairperson:SPring-8 Adachi,Shin-ichi KEK
    Vice Chairperson:SACLA Yoneda, Hitoki The University of Electro-Communications
    Vice Chairperson:Industry Homma, Hodaka Nippon Steel Corp.
    General Affairs Secretary Matsushita, Tomohiro NAIST
    PR Secretary Takenaka, Mikihito Kyoto University
    Editorial Secretary Takeda, Yukiharu JAEA
    Accounting Secretary Kubota, Yoshiki Osaka Prefecture University
    Event Secretary Nishibori, Eiji University of Tsukuba
    Event Secretary Yokoya, Takayoshi Okayama University
    Faculty Use Committee Chair (SPring-8) Tanaka, Yoshihito University of Hyogo
    Facility Use Secretary Mimura, Kojiro Osaka Prefecture University
    Faculty Use Committee Chair (SACLA) Yoneda, Hitoki The University of Electro-Communications
    Facility Use Secretary Kodama, Ryosuke Osaka University
    Project Supervisor Wakabayashi, Yusuke Tohoku University
    Planning Secretary Fujiwara, Hidenori Osaka University
    Auditor Secretary Takahara, Atsushi Kyushu University
    Auditor Secretary Nakagawa, Atsushi Osaka University
    Auditor Secretary Mizuki, Jun’ichiro Kwansei Gakuin University

Finally, I would like to express my sincere thanks with a great honor to the four predecessors, Profs. Yoshiyuki Amemiya, Atsushi Takahara, Atsushi Nakagawa, and Jun’ichiro Mizuki and their secretary members for their extensive effort to lift up the community on to the current stage that has been evolved quite positively. I therefore declare here that I would never wipe out the heat of user’s mind and even enhance it by making the community’s function smoother and more straightforward. I believe that it should be one of the most important tasks for me and my colleagues.

Chair of SPRUC
Graduate School of Advanced Science and Engineering,
Hiroshima University
Akio Kimura

© SPring-8 Users Community 2021