Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Takaaki Furuya"'
Autor:
Hiroshi Sakai, Enrico Cenni, Kazuhiro Enami, Takaaki Furuya, Masaru Sawamura, Kenji Shinoe, Kensei Umemori
Publikováno v:
Physical Review Accelerators and Beams, Vol 22, Iss 2, p 022002 (2019)
Field emission is one of the most serious issues in the degradation of superconducting cavity performance. However, surveying field emission sources during the cavity performance test (called the “vertical test”) and cryomodule operation is diffi
Externí odkaz:
https://doaj.org/article/b9f61a3ae9514a378c670171f0d3d40f
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 882:30-40
A new type of waveguide, named the C-shaped waveguide (CSWG), has a structure similar to that of a coaxial line but with a plate connecting the inner conductor to the outer conductor. The CSWG has unique characteristics, such as a cutoff frequency an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c314cb421901615cbd54b64c5c2b4f39
https://doi.org/10.1016/j.nima.2017.09.067
https://doi.org/10.1016/j.nima.2017.09.067
Autor:
Yasunori Tanimoto, K. Endo, Ryota Takai, H. Matsushita, Eiji Kako, Kentaro Harada, Kenji Hosoyama, Kota Nakanishi, Seiji Asaoka, Shuichi Noguchi, Ken Watanabe, Feng Qiu, Yuuji Kojima, Enrico Cenni, Kazufumi Hara, Kaiichi Haga, Masao Kuriki, Yosuke Honda, Hiromitsu Nakajima, Teruya Honma, Yukinori Kobayashi, Shinichiro Michizono, Ryoichi Hajima, Kazuhiro Enami, Tatsuya Kume, Shigeki Fukuda, Hirotaka Nakai, K. Umemori, Masaru Sawamura, Kotaro Satoh, M. Tadano, Mitsuo Akemoto, Hidenori Sagehashi, Hiroshi Matsumura, Hiroshi Kawata, Takako Miura, Shinichi Sasaki, Toshio Shishido, Takaaki Furuya, Masato Egi, Tateru Takenaka, Hiroshi Sakai, Kenji Shinoe, Y. Kondou, Tohru Honda, Miho Shimada, Hiroaki Katagiri, Takashi Nogami, Akira Ueda, Takashi Uchiyama, Norio Nakamura, Tsukasa Miyajima, Dai Arakawa, Shinya Nagahashi, Shogo Sakanaka, Takashi Obina, Takeshi Takahashi, Olga Tanaka, Masahiro Yamamoto, Kazuyuki Nigorikawa, Nobuyuki Nishimori, Ryoji Nagai
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 877:197-219
Energy-recovery linacs (ERLs) are promising for advanced synchrotron light sources, high-power free electron lasers (FELs), high-brightness gamma-ray sources , and electron–ion colliders. To demonstrate the critical technology of ERL-based light so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1952effdd5de9bc5fae9a38c16bee59
https://doi.org/10.1016/j.nima.2017.08.051
https://doi.org/10.1016/j.nima.2017.08.051
Autor:
K. Umemori, Masaru Sawamura, Kenji Shinoe, Kazuhiro Enami, Hiroshi Sakai, Takaaki Furuya, Enrico Cenni
Publikováno v:
Physical Review Accelerators and Beams, Vol 22, Iss 2, p 022002 (2019)
Field emission is one of the most serious issues in the degradation of superconducting cavity performance. However, surveying field emission sources during the cavity performance test (called the ``vertical test'') and cryomodule operation is difficu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37ed19ba3516ce922a0ed7989166c70c
https://doi.org/10.1103/physrevaccelbeams.22.022002
https://doi.org/10.1103/physrevaccelbeams.22.022002
Publikováno v:
Chemical Engineering Journal. 377:120203
Dry reforming of methane (DRM) is a useful reaction because it can produce syngas with a low H2/CO molar ratio, which is suitable for the production of hydrocarbons and alcohols. However, deactivation of the catalysts typically occurs because of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7a733545b47ee2213a232ccda231616
https://doi.org/10.1016/j.cej.2018.10.140
https://doi.org/10.1016/j.cej.2018.10.140
Autor:
Hiroshi Matsumura, Kaiichi Haga, Masaru Sawamura, Akihiro Toyoda, Hajime Nakamura, Shogo Sakanaka, Hiroshi Sakai, Takaaki Furuya, K. Umemori, Kenji Shinoe, Enrico Cenni, Ken-ichi Hozumi, Kazuhiro Enami
Publikováno v:
EPJ Web of Conferences, Vol 153, p 07011 (2017)
The field emission electron currents from the main superconducting cavities (Cavities #3 and #4) of compact ERL at KEK, Japan, were estimated indirectly from photon dose rates measured around the cavities and on the roof of the compact ERL room. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d959d2534745ffdcf02c07376405e37
https://doaj.org/article/89e2ac6cc1de4bb6b7302c10d4b501e8
https://doaj.org/article/89e2ac6cc1de4bb6b7302c10d4b501e8
Autor:
Weimin Pan, S. Mitsunobu, Zhanjun Zhang, Xuwen Dai, Qiang Ma, Tong-Ming Huang, Takaaki Furuya, Guang-Wei Wang
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 623:895-902
A high power input coupler for a 500 MHz superconducting cavity (SCC) of the upgrade project of Beijing Electron Positron Collider (BEPCII) has been developed in China. Several prototypes have been fabricated and tested successfully. A maximum of 420
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9154b56ef4f32b75d5877d4870dca5e4
https://doi.org/10.1016/j.nima.2010.08.108
https://doi.org/10.1016/j.nima.2010.08.108
Autor:
Takaaki Furuya
Publikováno v:
Reviews of Accelerator Science and Technology. :211-235
The development of superconducting RF cavity technology started in the 1960s, aiming for continuous wave operation of high gradient linacs with excellent electric power efficiency. After continuous efforts for more than four decades, the initial achi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52c8846297168a42b1cd18925b358fbf
https://doi.org/10.1142/s1793626808000149
https://doi.org/10.1142/s1793626808000149
Autor:
Takaaki Furuya
Publikováno v:
TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan). 39:452-462
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11dc119d3130b64cc04678070b82b9f9
https://doi.org/10.2221/jcsj.39.452
https://doi.org/10.2221/jcsj.39.452
Autor:
Takaaki Furuya, Yoshiyuki Morita, Hirotaka Nakai, H. Nakanishi, Masaaki Ono, Kiyokazu Ebihara, S. Isagawa, S. Mitsunobu, N. Akasaka, K. Akai, Atsushi Kabe, Yoshishige Yamazaki, Kenji Hosoyama, Tatsuya Kageyama, S. Yoshimoto, Hiroshi Sakai, Masaaki Suetake, H. Mizuno, Keigo Hara, Tsuyoshi Tajima, Y. Takeuchi, E. Ezura, Y. Kojima
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 499:45-65
This paper describes the design features and operational status of the RF systems for the KEK B-Factory (KEKB). Two types of new RF cavities have been developed to store very high-intensity beams with many short bunches. The design and performance of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5df112dbb8a698cd06744cc5a00cc3dd
https://doi.org/10.1016/s0168-9002(02)01773-4
https://doi.org/10.1016/s0168-9002(02)01773-4