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Ishizawa, Akihiro*; Idomura, Yasuhiro; Imadera, Kenji*; Kasuya, Naohiro*; Kanno, Ryutaro*; Satake, Shinsuke*; Tatsuno, Tomoya*; Nakata, Motoki*; Nunami, Masanori*; Maeyama, Shinya*; et al.
Purazuma, Kaku Yugo Gakkai-Shi, 92(3), p.157 - 210, 2016/03
The high-performance computer system Helios which is located at The Computational Simulation Centre (CSC) in The International Fusion Energy Research Centre (IFERC) started its operation in January 2012 under the Broader Approach (BA) agreement between Japan and the EU. The Helios system has been used for magnetised fusion related simulation studies in the EU and Japan and has kept high average usage rate. As a result, the Helios system has contributed to many research products in a wide range of research areas from core plasma physics to reactor material and reactor engineering. This project review gives a short catalogue of domestic simulation research projects. First, we outline the IFERC-CSC project. After that, shown are objectives of the research projects, numerical schemes used in simulation codes, obtained results and necessary computations in future.
Sakanaka, Shogo*; Akemoto, Mitsuo*; Aoto, Tomohiro*; Arakawa, Dai*; Asaoka, Seiji*; Enomoto, Atsushi*; Fukuda, Shigeki*; Furukawa, Kazuro*; Furuya, Takaaki*; Haga, Kaiichi*; et al.
Proceedings of 1st International Particle Accelerator Conference (IPAC '10) (Internet), p.2338 - 2340, 2010/05
Future synchrotron light source using a 5-GeV energy recovery linac (ERL) is under proposal by our Japanese collaboration team, and we are conducting R&D efforts for that. We are developing high-brightness DC photocathode guns, two types of cryomodules for both injector and main superconducting (SC) linacs, and 1.3 GHz high CW-power RF sources. We are also constructing the Compact ERL (cERL) for demonstrating the recirculation of low-emittance, high-current beams using above-mentioned critical technologies.
Sakanaka, Shogo*; Ago, Tomonori*; Enomoto, Atsushi*; Fukuda, Shigeki*; Furukawa, Kazuro*; Furuya, Takaaki*; Haga, Kaiichi*; Harada, Kentaro*; Hiramatsu, Shigenori*; Honda, Toru*; et al.
Proceedings of 11th European Particle Accelerator Conference (EPAC '08) (CD-ROM), p.205 - 207, 2008/06
Future synchrotron light sources based on the energy-recovery linacs (ERLs) are expected to be capable of producing super-brilliant and/or ultra-short pulses of synchrotron radiation. Our Japanese collaboration team is making efforts for realizing an ERL-based hard X-ray source. We report recent progress in our R&D efforts.
Kakizaki, Takehiko; Hamada, Nobuyuki*; Sakashita, Tetsuya; Wada, Seiichi*; Hara, Takamitsu*; Funayama, Tomoo; Hodatsu, Tsutomu*; Natsuhori, Masahiro*; Sano, Tadashi*; Kobayashi, Yasuhiko; et al.
Journal of Veterinary Medical Science, 69(6), p.605 - 609, 2007/06
Times Cited Count：1 Percentile：13.67(Veterinary Sciences)no abstracts in English
-rays and energetic carbon ionsKakizaki, Takehiko; Hamada, Nobuyuki*; Funayama, Tomoo; Sakashita, Tetsuya; Wada, Seiichi*; Hodatsu, Tsutomu*; Natsuhori, Masahiro*; Sano, Tadashi*; Kobayashi, Yasuhiko; Ito, Nobuhiko*
Journal of Veterinary Medical Science, 68(12), p.1269 - 1273, 2006/12
Times Cited Count：3 Percentile：23.41(Veterinary Sciences)no abstracts in English
Kakizaki, Takehiko; Hamada, Nobuyuki*; Wada, Seiichi*; Funayama, Tomoo; Sakashita, Tetsuya; Hodatsu, Tsutomu*; Sano, Tadashi*; Natsuhori, Masahiro*; Kobayashi, Yasuhiko; Ito, Nobuhiko*
Journal of Radiation Research, 47(3-4), p.237 - 243, 2006/11
no abstracts in English
Akai, Masanobu; Ito, Nobuyuki*; Yamaguchi, Tetsuji; Tanaka, Tadao; Iida, Yoshihisa; Nakayama, Shinichi; Inagaki, Shingo*
JAERI-Tech 2004-058, 47 Pages, 2004/09
JAERI-Tech-2004-058.pdf:7.27MB
Geochemistry Research Equipment for TRU Waste Elements has been installed in Back-end Cycle Key Elements Research Facility (BECKY) of Nuclear Fuel Cycle Safety Engineering Research Facility (NUCEF). This equipment is designed to study geochemical behavior of TRU elements and other radionuclides contained in TRU waste (TRU waste elements) and to acquire data for safety assessments of radioactive wastes disposal. The equipment consists of anaerobic glove box systems, aerobic glove box systems equipped with built-in barrier performance testing apparatus, and analytical instruments. This report describes principles, structure, performance and safety designs of each component of the equipment, and results of research performed in the equipment.
Eu M
ssbauer spectroscopic study on the Eu
M
O
(0
y1.0)(M=Th, U)Masaki, Nobuyuki; Otobe, Haruyoshi; Nakamura, Akio; Harada, Daijitsu*; Ito, Kentaro*; Sasaki, Yoshinobu*; Hinatsu, Yukio*
Journal of Nuclear Science and Technology, 39(Suppl.3), p.217 - 220, 2002/11
no abstracts in English
Yamauchi, Toshihiko; Minehara, Eisuke; Kikuzawa, Nobuhiro; Hayakawa, Takehito; Sawamura, Masaru; Nagai, Ryoji; Nishimori, Nobuyuki; Hajima, Ryoichi; Shizuma, Toshiyuki; Kamei, Yasutaka*; et al.
Kankyo Kagakkai-Shi, 13(3), p.383 - 390, 2000/09
no abstracts in English
Funayama, Tomoo; Kakizaki, Takehiko; Wada, Seiichi; Hamada, Nobuyuki*; Sakashita, Tetsuya; Hodatsu, Tsutomu*; Yamada, Naoaki*; Sano, Tadashi*; Natsuhori, Masahiro*; Kobayashi, Yasuhiko; et al.
no journal, ,
Responses of two lines of feline T lymphocytes, FeT-J and FL-4, to ionizing radiation were examined in the present study. FL-4 cells, but not FeT-J, were persistently infected with feline immunodeficiency virus. Cells were irradiated with 
Co- rays at 2 Gy/min. Surviving fractions were evaluated with clonogenic assay. Apoptosis was detected using TdT-mediated dUTP-biotin nick end labeling (TUNEL) method. Changes in nuclear morphology of viable cells were evaluated by double staining with Hoechst 33342 and ethidium bromide. Mean surviving fractions of FL-4 cells were slightly higher than FeT-J for each radiation dose given. However, dose required to reduce to 63 % of surviving fraction was 1.9 Gy in both cell lines. TUNEL assay, however, revealed the maximum frequency of apoptosis in FL-4 cells (
20 %) was lower than in FeT-J cells (
40 %). The time of frequency peak of TUNEL-positive cells in FL-4 was shorter than that of FeT-J. FL-4 cells reached peak level within 24 hours after irradiation, but FeT-J cells needed later than 48 hours after irradiation. Exposure of FL-4 cells to rays resulted in the giant- and the multi- nucleus formation. Nuclear swelling occurred to less extent in FeT-J than FL-4 cells. In conclusion, we found the difference in cellular responses to radiation in two lines of feline T lymphocytes. Modes of cell death of FL-4 cells were non-apoptotic and more research would discover new mechanism associated with apoptosis.
Kakizaki, Takehiko; Hamada, Nobuyuki*; Wada, Seiichi*; Sakashita, Tetsuya; Hara, Takamitsu*; Hodatsu, Tsutomu*; Natsuhori, Masahiro*; Sano, Tadashi*; Funayama, Tomoo; Fukamoto, Kana; et al.
no journal, ,
no abstracts in English
Kakizaki, Takehiko; Hamada, Nobuyuki*; Wada, Seiichi*; Sakashita, Tetsuya; Funayama, Tomoo; Hodatsu, Tsutomu*; Natsuhori, Masahiro*; Sano, Tadashi*; Kobayashi, Yasuhiko; Ito, Nobuhiko*
no journal, ,
no abstracts in English
Wada, Seiichi*; Funayama, Tomoo; Sakashita, Tetsuya; Fukamoto, Kana; Yokota, Yuichiro; Kakizaki, Takehiko*; Hamada, Nobuyuki*; Hara, Takamitsu*; Ito, Nobuhiko*; Kobayashi, Yasuhiko
no journal, ,
no abstracts in English
Wada, Seiichi*; Funayama, Tomoo; Sakashita, Tetsuya; Hamada, Nobuyuki*; Kakizaki, Takehiko*; Ito, Nobuhiko*; Kobayashi, Yasuhiko
no journal, ,
CHO-K1 cells attached on ion track detector CR-39 were irradiated with the same LET value but different nuclide (
C and 
Ne). DNA strand breaks were immunohistochemically detected with tdt for total breaks, and with H2AX antibody for double strand breaks only. The fluorescent signal observed in nuclei by immunochemistry was co-localized at the site of etched pit where the ion was traversed on the cell. To evaluate the spatial distribution of DNA damage, the diameter of the area of fluorescent signal was measured. The area of H2AX induced by C ion and Ne ion were not significantly different, however, the area of DNA strand breaks induced by Ne ion was larger than that induced by C ion. This result indicates that the difference of ion track structure influences the pattern of induction of DNA damage.
Osugi, Takeshi; Hanawa, Ritsu; Ito, Keisuke; Kuwahara, Akira; Nakashio, Nobuyuki; Kozawa, Kazushige; Nakashima, Kunihiko*; Saito, Noritaka*; Okoshi, Minoru
no journal, ,
no abstracts in English
Kuwahara, Akira; Osugi, Takeshi; Hanawa, Ritsu; Ito, Keisuke; Nakashio, Nobuyuki; Kozawa, Kazushige; Meguro, Yoshihiro; Akabori, Mitsuo; Okamoto, Yoshihiro; Nakashima, Kunihiko*; et al.
no journal, ,
In order to obtain the knowledge about cesium accumulations into the refractory in ash melting of decontamination waste, the immersion test was worked by immersing the refractory into melting slug including cesium, and cesium chemical forms in the refractory were analyzed.
