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Fujita, Yoshitaka; Seki, Misaki; Namekawa, Yoji*; Nishikata, Kaori; Daigo, Fumihisa; Ide, Hiroshi; Tsuchiya, Kunihiko; Sano, Tadafumi*; Fujihara, Yasuyuki*; Hori, Junichi*; et al.
KURNS Progress Report 2020, P. 136, 2021/08
no abstracts in English
Fujita, Yoshitaka; Seki, Misaki; Namekawa, Yoji*; Nishikata, Kaori; Kato, Yoshiaki; Sayato, Natsuki; Tsuchiya, Kunihiko; Sano, Tadafumi*; Fujihara, Yasuyuki*; Hori, Junichi*; et al.
KURNS Progress Report 2019, P. 157, 2020/08
no abstracts in English
Fujita, Yoshitaka; Seki, Misaki; Namekawa, Yoji*; Nishikata, Kaori; Kimura, Akihiro; Shibata, Akira; Sayato, Natsuki; Tsuchiya, Kunihiko; Sano, Tadafumi*; Fujihara, Yasuyuki*; et al.
KURNS Progress Report 2018, P. 155, 2019/08
no abstracts in English
Fujita, Yoshitaka; Nishikata, Kaori; Namekawa, Yoji*; Kimura, Akihiro; Shibata, Akira; Sayato, Natsuki; Tsuchiya, Kunihiko; Sano, Tadafumi*; Fujihara, Yasuyuki*; Zhang, J.*
KURRI Progress Report 2017, P. 126, 2018/08
no abstracts in English
Suzuki, Yoshitaka; Kitagawa, Tomoya*; Namekawa, Yoji*; Matsukura, Minoru*; Nishikata, Kaori; Mimura, Hitoshi*; Tsuchiya, Kunihiko
Transactions of the Materials Research Society of Japan, 43(2), p.75 - 80, 2018/04
no abstracts in English
Tsuchiya, Kunihiko; Namekawa, Yoji; Ishida, Takuya
Journal of Nuclear Materials, 386-388, p.1056 - 1059, 2009/04
Times Cited Count:0 Percentile:0.01(Materials Science, Multidisciplinary)Beryllium alloys such as Be-Ti and Be-V have been expected as promising candidates for advanced neutron multipliers of DEMO blankets from viewpoints of high melting point, high beryllium content, low radio activation, good chemical stability. In this study, the compatibility between Be-V alloy and F82H was investigated. The Be-7at%V specimens that includes Be and BeV phases were tested. From the XRD analysis of the specimens after annealing of the Be-V alloy in contact with F82H, reaction products such as BeNi and BeFe were observed on the surface of F82H. The thickness of reaction layer between Be-V alloy and F82H was about 10m. Thus, it has been clarified that compatibility between Be-V alloy and F82H is better than that between Be and F82H.
Tsuchiya, Kunihiko; Namekawa, Yoji; Ishida, Takuya; Emori, Noriyasu
no journal, ,
Beryllium alloys such as Be-Ti and Be-V have been expected as promising candidates for advanced neutron multipliers of DEMO blankets from viewpoints of high melting point, high beryllium content, low radio activation, good chemical stability. In this study, the compatibility between Be-V and SUS316LN was investigated. The Be-7at%V specimens that includes Be and BeV phases were tested. After annealing of the Be-V in contact with SS316LN, white reaction zones were observed on the surface of SS316LN. From the XRD analysis, reaction products such as BeNi and BeFe were observed on the surface of SS316LN and intensity of these peaks increased with increasing annealing temperature and time. The thickness of reaction layer between Be-V and SS316LN was smaller than that between Be and SS316LN and the thickness was less than 1/5. Thus, it has been clarified that compatibility between Be-V and SS316LN is better than that between Be and SS316LN.
Kamiya, Junichiro; Noshiroya, Shiyoji; Namekawa, Yuya; Hikichi, Yusuke; Sato, Atsushi; Kinsho, Michikazu; Yanagibashi, Toru*
no journal, ,
The 3 GeV synchrotron (Rapid Cycling Synchrotron: RCS) in J-PARC facility is one of the highest proton beam power accelerators, aiming 1 MW beam power. The RCS was completed in 2007. Since then, the vacuum system of the RCS has been stably operated through the steady/non-steady maintenances and the additional upgrades. This report aims to introduce the upgrade in the RCS vacuum system and the vacuum status of the beam line during the accelerator operation period.
Suzuki, Yoshitaka; Namekawa, Yoji; Kitagawa, Tomoya*; Matsukura, Minoru*; Kurosaki, Fumio*; Nishikata, Kaori; Matsui, Yoshinori; Mimura, Hitoshi*; Tsuchiya, Kunihiko
no journal, ,
no abstracts in English
Kitagawa, Tomoya*; Kurosaki, Fumio*; Yoneyama, Takashi*; Matsukura, Minoru*; Mimura, Hitoshi*; Suzuki, Yoshitaka; Namekawa, Yoji; Tsuchiya, Kunihiko
no journal, ,
no abstracts in English
Suzuki, Yoshitaka; Namekawa, Yoji*; Kitagawa, Tomoya*; Kakei, Sadanori*; Matsukura, Minoru*; Yoshinaga, Hideo*; Mimura, Hitoshi*; Tsuchiya, Kunihiko
no journal, ,
no abstracts in English