-
Improvement of reliability in long-term operation of the LHD cryogenic system
Shinji Hamaguchi, Akifumi Iwamoto, Sadatomo Moriuchi, Koki Oba, Shigeyuki Takami, Hiroki Noguchi, Hiroyuki Tanoue, Toshiyuki Mito
Fusion Engineering and Design Vol. 217 p. 115174-115174 2025/08 Research paper (scientific journal)
Publisher: Elsevier BV
-
Thermal Runaway of a REBCO Coil Co-Wound With a Copper Tape Immersed in Liquid Nitrogen/Hydrogen
Shinsaku Imagawa, Masayoshi Ohya, Yasuyuki Shirai, Akifumi Iwamoto, Shinji Hamaguchi, Hiroaki Kobayashi
IEEE Transactions on Applied Superconductivity Vol. 35 No. 5 p. 1-5 2025/08 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
-
Mechanical properties of bulk YBaCuO superconductor fabricated using the infiltration growth technique
Akira Murakami, Akifumi Iwamoto, Miryala Muralidhar
Journal of Physics: Conference Series Vol. 3054 No. 1 p. 012014-012014 2025/07/01 Research paper (scientific journal)
Publisher: IOP Publishing
-
Boosting fast ignition heating through interaction between ultrahigh-contrast heating lasers and a cone-shaped target
Ryunosuke Takizawa, Alessio Morace, Yuki Abe, Yasunobu Arikawa, Baojun Zhu, Hiroki Morita, Zechen Lan, Jinyuan Dun, Takumi Tsuido, Yuga Karaki, Hiroki Matsubara, King Fai Farley Law, Chang Liu, Kazuki Matsuo, Akifumi Yogo, Akifumi Iwamoto, Hideo Nagatomo, Tomoyuki Johzaki, Mitsuo Nakai, Hiroyuki Shiraga, Ryosuke Kodama, Yasuhiko Sentoku, Shinsuke Fujioka
Physical Review Research Vol. 7 No. 2 2025/04/24 Research paper (scientific journal)
Publisher: American Physical Society (APS)
-
Baseline design of laser fusion research reactor with MW class laser facility
Akifumi Iwamoto, Masahiro Tanaka, Keisuke Shigemori, Ryosuke Kodama
Nuclear Fusion Vol. 64 No. 8 p. 086068-086068 2024/07/15 Research paper (scientific journal)
Publisher: IOP Publishing
-
Study on irradiation effect of insulating materials for fusion superconducting magnets: temperature dependence of mechanical strength
Y Akiyama, A Ohta, Y Manabe, F Sato, A Iwamoto, S Imagawa, H Utoh, S Nishijima
IOP Conference Series: Materials Science and Engineering Vol. 1302 No. 1 p. 012003-012003 2024/05/01 Research paper (scientific journal)
Publisher: IOP Publishing
-
Co-simulation of cool down process from 300 to 80 K for ITER Tokamak
S Takami, A Iwamoto, R Maekawa, L Qiu, D Grillot
IOP Conference Series: Materials Science and Engineering Vol. 1301 No. 1 p. 012103-012103 2024/05/01 Research paper (scientific journal)
Publisher: IOP Publishing
-
Cryogenic solid deuterium target formation to realize highly pure deuteron acceleration by high-intensity laser
Tianyun Wei, Akifumi Iwamoto, Zechen Lan, Takehito Hayakawa, Yasunobu Arikawa, Daiki Tanabe, Takashi Ishimoto, Takato Mori, Masatoshi Takeshita, Masakatsu Murakami, Yanjun Gu, Alessio Morace, Mitsuo Nakai, Akifumi Yogo
Japanese Journal of Applied Physics Vol. 63 No. 4 p. 046002-046002 2024/04/01 Research paper (scientific journal)
Publisher: IOP Publishing
-
Overcurrent Test of High-Temperature Superconducting Coils With Liquid Hydrogen Immersion Cooling
H. Oya, Y. Shirai, R. Kawasaki, F. Matsumoto, Y. Maeda, G. Matsumoto, M. Shiotsu, S. Imagawa, A. Iwamoto, S. Hamaguchi, M. Tsuda, Y. Nagasaki, T. Yagai, H. Kobayashi, M. Ohya
IEEE Transactions on Applied Superconductivity Vol. 33 No. 5 p. 1-5 2023/08 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
-
Refractive index measurement of hydrogen isotopologue mixture and applicability for homogeneity of hydrogen solid at cryogenic temperature in fusion fuel system
Jiaqi Zhang, Akifumi Iwamoto, Keisuke Shigemori, Masanori Hara, Kohei Yamanoi
Nuclear Fusion Vol. 63 No. 7 p. 076020-076020 2023/06/06 Research paper (scientific journal)
Publisher: IOP Publishing
-
Fabrication of high-concentration Cu-doped deuterated targets for fast ignition experiments
Tomokazu Ikeda, Yumi Kaneyasu, Hitomi Hosokawa, Keisuke Shigemori, Takayoshi Norimatsu, Marilou Cadatal-Raduban, Keiji Nagai, Sadaoki Kojima, Yuki Abe, Eisuke Miura, Yoneyoshi Kitagawa, Mao Takemura, Yubo Wang, Jinyuan Dun, Shuwang Guo, Shoui Asano, Ryunosuke Takizawa, Shinsuke Fujioka, Hiroyuki Shiraga, Yasunobu Arikawa, Tetsuo Ozaki, Akifumi Iwamoto, Hitoshi Sakagami, Hiroshi Sawada, Yoshitaka Mori, Kohei Yamanoi
Nuclear Fusion Vol. 63 No. 1 2022/11/15 Research paper (scientific journal)
Publisher: IOP Publishing
-
Author Correction: Proof-of-principle experiment for laser-driven cold neutron source (Scientific Reports, (2020), 10, 1, (20157), 10.1038/s41598-020-77086-y)
S. R. Mirfayzi, A. Yogo, Z. Lan, T. Ishimoto, A. Iwamoto, M. Nagata, M. Nakai, Y. Arikawa, Y. Abe, D. Golovin, Y. Honoki, T. Mori, K. Okamoto, S. Shokita, D. Neely, S. Fujioka, K. Mima, H. Nishimura, S. Kar, R. Kodama
Scientific Reports Vol. 11 No. 1 2021/12 Research paper (scientific journal)
-
Preliminary Cryogenic Layering by the Infrared Heating Method Modified with Cone Temperature Control for the Polystyrene Shell FIREX Target
Keisuke IWANO, Akifumi IWAMOTO, Kohei YAMANOI, Yasunobu ARIKAWA, Hideo NAGATOMO, Mitsuo NAKAI, Takayoshi NORIMATSU
Plasma and Fusion Research Vol. 16 p. 1404099-1404099 2021/11/25 Research paper (scientific journal)
Publisher: Japan Society of Plasma Science and Nuclear Fusion Research
-
Improvement of I<inf>c</inf>degradation of HTS Conductor (FAIR Conductor) and FAIR Coil Structure for Fusion Device
Toshiyuki Mito, Yuta Onodera, Maki Otsuji, Naoki Hirano, Kazuya Takahata, Nagato Yanagi, Akifumi Iwamoto, Shinji Hamaguchi, Suguru Takada, Tomosumi Baba, Noriko Chikumoto, Akifumi Kawagoe, Ryozo Kawanami
IEEE Transactions on Applied Superconductivity Vol. 31 No. 5 2021/08 Research paper (scientific journal)
-
Effect of Direction of External Magnetic Field on Minimum Propagation Current of a Composite Conductor for LHD Helical Coils
S. Imagawa, H. Chikaraishi, S. Hamaguchi, T. Obana, A. Iwamoto, N. Yanagi, K. Takahata, T. Mito
IEEE Transactions on Applied Superconductivity Vol. 31 No. 5 2021/08 Research paper (scientific journal)
-
Proof-of-principle experiment for laser-driven cold neutron source
S. R. Mirfayzi, A. Yogo, Z. Lan, T. Ishimoto, A. Iwamoto, M. Negata, M. Nakai, Y. Arikawa, Y. Abe, D. Golovin, Y. Honoki, T. Mori, K. Okamoto, S. Shokita, D. Neely, S. Fujioka, K. Mima, H. Nishimura, S. Kar, R. Kodama
SCIENTIFIC REPORTS Vol. 10 No. 1 2020/11 Research paper (scientific journal)
-
Development of Tritium Tracer Doped Liquid Fuel Target for Inertial Confinement Fusion at the Gekko XII-LFEX Facility
Yasunobu Arikawa, Yuki Iwasa, Kohei Yamanoi, Keisuke Iwano, Shinsuke Fujioka, Akifumi Iwamoto, Mitsuo Nakai, Yuji Hatano, Masanori Hara, Satoshi Akamaru, Takayoshi Norimatsu, Ryosuke Kodama
Fusion Science and Technology Vol. 76 No. 4 p. 464-470 2020/05/18 Research paper (scientific journal)
-
Void free fuel solidification in a foam shell FIERX target
Akifumi Iwamoto, Takeshi Fujimura, Takayoshi Norimatsu
Plasma and Fusion Research Vol. 15 2020 Research paper (scientific journal)
Publisher: Japan Society of Plasma Science and Nuclear Fusion Research
-
Development of FAIR conductor and HTS coil for fusion experimental device
Toshiyuki Mito, Yuta Onodera, Naoki Hirano, Kazuya Takahata, Nagato Yanagi, Akifumi Iwamoto, Shinji Hamaguchi, Suguru Takada, Tomosumi Baba, Noriko Chikumoto, Akifumi Kawagoe, Ryozo Kawanami
Journal of Physics Communications Vol. 4 No. 3 2020 Research paper (scientific journal)
-
Assessing infrared intensity using the evaporation rate of liquid hydrogen inside a cryogenic integrating sphere for laser fusion targets
K. Iwano, A. Iwamoto, T. Asahina, K. Yamanoi, Y. Arikawa, H. Nagatomo, M. Nakai, T. Norimatsu, H. Azechi
REVIEW OF SCIENTIFIC INSTRUMENTS Vol. 88 No. 7 2017/06 Research paper (scientific journal)
-
In-situ calibration method of orifice flow meter equipped in 600W helium refrigerator/liquefier with variable temperature supplies
Akifumi Iwamoto, Minoru Nobutoki, Takuya Kumaki, Haruhiro Higaki, Shinji Hamaguchi, Kazuya Takahata, Shinsaku Imagawa, Toshiyuki Mito, Suguru Takada, Kouji Nadehara
Fusion Engineering and Design 2016/09 Research paper (scientific journal)
-
Mechanical issues of FIREX target under cryogenic environment
Akifumi Iwamoto, Takeshi Fujimura, Atsushi Sunahara, Hitoshi Sakagami, Takayoshi Norimatsu
Plasma and Fusion Research Vol. 6 No. 1 2011 Research paper (scientific journal)
-
TEMPERATURE CONTROL IN A CRYOGENIC TARGET WITH A CONICAL LASER GUIDE FOR FUEL LAYERING
A. Iwamoto, T. Fujimura, M. Nakai, T. Norimatsu, K. Nagai, R. Maekawa, H. Sakagami, T. Mito, O. Motojima, H. Azechi, K. Mima
FUSION SCIENCE AND TECHNOLOGY Vol. 56 No. 1 p. 427-431 2009/07 Research paper (scientific journal)
-
Laser machining of RF foam by second harmonics of Nd : Yag laser
Takeshi Fujimura, Takayoshi Norimatsu, Mitsuo Nakai, Keiji Nagai, Akifumi Iwamoto, Kunioki Mima
FUSION SCIENCE AND TECHNOLOGY Vol. 51 No. 4 p. 677-681 2007/05 Research paper (scientific journal)
-
Preliminary results of fuel layering on the cryogenic target for the firex project
A. Iwamoto, R. Maekawa, T. Mito, H. Sakagami, O. Motojima, M. Nakai, K. Nagai, T. Fujimura, T. Norimatsu, H. Azechi, K. Mitna
FUSION SCIENCE AND TECHNOLOGY Vol. 51 No. 4 p. 753-757 2007/05 Research paper (scientific journal)
-
Achievement of high availability in long-term operation and upgrading plan of the LHD superconducting system
S. Imagawa, N. Yanagi, S. Hamaguchi, T. Mito, K. Takahata, H. Tamura, S. Yamada, R. Maekawa, A. Iwamoto, H. Chikaraishi, S. Moriuchi, H. Sekiguchi, K. Ooba, M. Shiotsu, T. Okamura, A. Komori, O. Motojima
NUCLEAR FUSION Vol. 47 No. 4 p. 353-360 2007/04 Research paper (scientific journal)
-
Steady state heat transfer of an oxidized copper surface in subcooled liquid helium
A. Iwamoto, R. Maekawa, T. Mito
FUSION ENGINEERING AND DESIGN Vol. 81 No. 23-24 p. 2611-2615 2006/11 Research paper (scientific journal)
-
Cool-down performance of the apparatus for the cryogenic target of the FIREX project
A Iwamoto, R Maekawa, T Mito, M Okamoto, O Motojima, S Sugito, K Okada, A Nakai, T Norimatsu, K Nagai
FUSION ENGINEERING AND DESIGN Vol. 81 No. 8-14 p. 1647-1652 2006/02 Research paper (scientific journal)
-
Foam materials for cryogenic targets of fast ignition realization experiment (FIREX)
K Nagai, H Azechi, F Ito, A Iwamoto, Y Izawa, T Johzaki, R Kodama, K Mima, T Mito, M Nakai, N Nemoto, T Norimatsu, Y Ono, K Shigemori, H Shiraga, KA Tanaka
NUCLEAR FUSION Vol. 45 No. 11 p. 1277-1283 2005/11 Research paper (scientific journal)
-
Development of evaluation technique on thermal impedance between dissimilar solids
A Iwamoto, R Maekawa, T Mito
ADVANCES IN CRYOGENIC ENGINEERING, VOLS. 49A AND B Vol. 710 p. 643-650 2004 Research paper (international conference proceedings)
-
Kapitza conductance of an oxidized copper surface in saturated HeII
A Iwamoto, R Maekawa, T Mito
CRYOGENICS Vol. 41 No. 5-6 p. 367-371 2001/05 Research paper (scientific journal)
-
Stability and Safety Estimates and Tests of a Superconducting Bus-Line for Large-Scale Superconducting Coils
Toshiyuki Mito, Shuichi Yamada, Hirotaka Chikaraishi, Kazuya Takahata, Nagato Yanagi, Akifumi Iwamoto, Arata Nishimura, Shugo Tanahashi, Osamu Motojima, Junya Yamamoto, Toshio Uede, Hisaaki Hiue, Kazuo Ueda, Ikuo Itoh
IEEE Transactions on Applied Superconductivity Vol. 5 No. 2 p. 917-920 1995/06 Research paper (scientific journal)