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Yamamoto, Kazami; Kinsho, Michikazu; Hayashi, Naoki
Proceedings of 5th International Particle Accelerator Conference (IPAC '14) (Internet), p.3379 - 3381, 2014/07
Last summer shutdown an injection energy of J-PARC rapid cycling synchrotron was upgraded from 181 MeV to 400 MeV to aim for reduction of the space charge effect during injection period. By the commissioning after the shutdown, 300 kW operation condition was established. In this condition, the doses of most areas were kept at the same level as 181 injection energy operation or decreased except to the injection foil chamber, 100 degrees and H dumps.
Nakane, Yoshihiro; Nakano, Hideo*; Abe, Teruo*; Nakashima, Hiroshi
Proceedings of 11th International Congress of the International Radiation Protection Association (IRPA-11) (CD-ROM), 6 Pages, 2004/05
no abstracts in English
; Shinohara, Kunihiko; ; ; ; Isozaki, Tokuju; ; *
JNC TN8440 2000-003, 93 Pages, 2000/08
The investigation on the radioactivity concentration for gross beta, H and Cs in seawater collected around the discharge point had been performed in order to grasp the change of the activity level of the coastal seawater offshore the JNC Tokai Works from the low level liquid effluent of the reprocessing plant. After the investigation on the radioactivity in seawater during the hot examination, the detailed investigation on the environmental effects from the liquid effluent of JNC reprocessing plant has been performed since July 1978 on the basis of the request from Ibaraki prefecture as the full-scale operation of the reprocessing plant. Consequently, no increase of the radioactive concentration due to the discharged effluent has been observed. And also, as the result of the consideration to the investigation on the environmental effect from the liquid effluent throughout 22 years since 1978, no change of the radioactive concentration level in seawater was recognized.
Fujiki, Kazuo;
EUR-15691, 0, p.133 - 146, 1994/00
no abstracts in English
Fujiki, Kazuo; Nakamura, Hisashi; Kanazawa, Katsuo
1st JSME/ASME Joint Int. Conf. on Nuclear Engineering, p.47 - 52, 1991/00
no abstracts in English
IEEE Transactions on Nuclear Science, NS-31(1), p.316 - 319, 1984/00
no abstracts in English