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Minehara, Eisuke; Hajima, Ryoichi; Sawamura, Masaru; Nagai, Ryoji; Nishimori, Nobuyuki; Kikuzawa, Nobuhiro; Sugimoto, Masayoshi; Yamauchi, Toshihiko; Hayakawa, Takehito; Shizuma, Toshiyuki
Proceedings of 13th Symposium on Accelerator Science and Technology, p.150 - 154, 2001/10
We need a powerful and efficient free-electron laser(FEL) for industrial uses, for examples, pharmacy, medical, defense, shipbuilding, semiconductor industry, chemical industries, environmental sciences, space-debris, power beaming and so on. In order to realize such a tunable, highly-efficient, high average power, high peak power and ultra-short pulse FEL, the JAERI FEL group and I have successfully demonstrated the efficient and powerful FEL driven by a compact, stand-alone and zero-boil-off super-conducting rf linac with an energy-recovery geometry. Our discussions on the FEL will cover market-requirements for the industrial FELs, some answers from the JAERI compact, stand-alone and zero-boil-off cryostat concept and operational experience over these 8 years, our discovery of the new, highly-efficient, high-power, and ultra-short pulse lasing mode, and the energy-recovery geometry.
Minehara, Eisuke
Isotope News, (559), p.8 - 10, 2000/12
no abstracts in English
Kusunoki, Tsuyoshi; Tanimoto, Masataka; Kaminaga, Masanori; Ishihara, Masahiro; Araki, Masanori
no journal, ,
In August 2006, operation of the JMTR in JAEA was terminated due to assessment for the operation continuation decision. As a result of the national discussion, the JMTR was decided to continue operation after necessary refurbishment works. The refurbishment was finished in March 2011.However, in March 2011 just after the completion of the refurbishment, the Great-Eastern-Japan-Earthquake occurred, and the JMTR restart were delayed. On the other hand, based on the safety assessments considering the 2011 earthquake new regulatory requirements for research and test reactors have established on Dec., 2013 by the NRA. After evaluation and analyses to the new regulatory requirements were carried out, an application to the NRA was submitted on March, 2015. After taking measures for the safety requirements and the permission by the NRA, the renewed JMTR will be operated for a safety research of LWRs, basic research for nuclear engineering, industrial use, and education and training.
