KURRI progress report 2004. April 2004 - March 2005

The fiscal year 2004 was the 40-th anniversary of Kyoto University research Reactor (KUR) and also the 30-th anniversary of Kyoto University Critical Assembly (KUCA). The KUR and KUCA have been operated for 1,316 and 732 hours, respectively. Kyoto University Research Reactor Institute (KURRI) accepted 5,186 man-day researchers including students in total for their experiments in accordance with the joint use programs among Japanese universities and public research organizations, and for scientific meetings held at KURRI. Note here that, since the application of boron neutron capture therapy (BNCT) was expanded to the head and neck cancers in addition to the brain tumors and skin cancers, the number of patients treated with the BNCT was greatly increasing year by year. Number of clinical irradiations were 11 in FY2002, 36 in FY2003, and 54 in FY2004. The results of these activities are reported in this progress report. The total 153 research issues are categorized to the 10 topics as follows; (1) Slow Neutron Physics and Neutron Scattering includes the 8 issues as general researches. (2) Nuclear Physics and Nuclear Data includes the 15 issues for the project research and the 2 issues as general researches. (3) Reactor Physics and Reactor Engineering includes the 6 issues as general researches. (4) Material Science and Radiation Effects includes the 21 issues for the project research and the 21 issues as general researches. (5) Geochemistry and Environmental Science includes the 16 issues as general researches. (6) Life Science and Medical Science includes the 5 issues for the project research and the 14 issues as general researches. (7) Neutron Capture Therapy includes the 19 issues as general researches. (8) Neutron Radiography and Radiation Application includes the 9 issues for the project research and the 3 issues as general researches. (9) TRU and Nuclear Chemistry includes the 11 issues for the project research. (10) Health Physics and Waste Management includes the 3 issues as general researches. This progress report also includes organization, research divisions and laboratories, operation and development of facilities, radiation protection and monitoring, publications from April 2004 to March 2005, meeting, seminars and visiting scientists, and committee members. (J.P.N.)