Zobrazeno 1 - 10
of 130
pro vyhledávání: '"Masayoshi Wake"'
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 18, Iss 5, p 050101 (2015)
A novel scheme for a racetrack-shape fixed field induction accelerator (RAFFIA) capable of accelerating extremely heavy cluster ions (giant cluster ions) is described. The key feature of this scheme is rapid induction acceleration by localized induct
Externí odkaz:
https://doaj.org/article/b1636daf28344569b7c236b906049c89
Autor:
Ken Takayama, Katsuya Okamura, Masayoshi Wake, Koichi Takaki, Ryosuke Sasaki, Yutaka Osawa, Takashi Yoshimoto
Publikováno v:
Materials Science Forum. :883-886
Utilizing a high power discrete SiC-JFET developed by KEK, a switching power supply (SPS) that had a circuit topology of H-bridge was designed and constructed to drive the induction acceleration system for the KEK digital accelerator. Following the h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27f3da1be8ef2ced448381762a38ede6
https://doi.org/10.4028/www.scientific.net/msf.778-780.883
https://doi.org/10.4028/www.scientific.net/msf.778-780.883
Autor:
Kwee Wah Leo, Tomio Kubo, Yoshihito Okada, Ken Takayama, H. Nakanishi, T. Arai, Takashi Yoshimoto, Toshikazu Adachi, H. Someya, K. Okazaki, E. Kadokura, Shinya Harada, Katsuya Okamura, Xingguang Liu, Dai Arakawa, M. Barata, Hiroyuki Asao, T. Iwashita, T. Kawakubo, Masayoshi Wake
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 733:141-146
The procedure for induction acceleration of a heavy ion beam of A/Q=4 in the KEK digital accelerator is reported. This paper discusses essential issues associated with induction acceleration of ion beams from low energies, including injection error,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::487c8c06b671425e605b1f00abfffcbb
https://doi.org/10.1016/j.nima.2013.05.082
https://doi.org/10.1016/j.nima.2013.05.082
Autor:
Masayoshi Wake, Yoshihito Okada, Keiichi Ise, E. Kadokura, Tadamichi Kawakubo, Takashi Yoshimoto, T. Arai, T. Iwashita, Leo Kwee Wah, Toshikazu Adachi, Yuji Barata, Liu Xingguang, H. Nakanishi, Yutaka Osawa, Dai Arakawa, Toshiya Mizushima, Ken Takayama, H. Someya, Koichi Takagi, K. Okazaki, Shinya Harada, Katsuya Okamura, Hiroyuki Asao
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 733:182-188
This paper reports the early beam commissioning of the KEK digital accelerator, which consists of novel accelerator components such as a permanent-magnet x-band electron cyclotron resonance ion source, an Einzel lens longitudinal chopper, an electros
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49f36e12bfb66f70db5f754514211113
https://doi.org/10.1016/j.nima.2013.05.072
https://doi.org/10.1016/j.nima.2013.05.072
Autor:
Ken Takayama, Koichi Mochiki, Kwee Wah Leo, Kazuhiko Horioka, H. Nakanishi, H. Someya, Toshikazu Adachi, E. Kadokura, Yoshihito Okada, Dai Arakawa, Xingguaung Liu, Kazumasa Takahashi, Yuji Barata, S. Takano, Taiki Iwata, T. Arai, Hiroyuki Asao, Katsuya Okamura, Takashi Yoshimoto, Masayoshi Wake, Masahiro Okamura, Tomio Kubo, K. Okazaki, Naoya Munemoto, Shinya Harada, Tadamichi Kwakubo
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 314:11-17
The KEK digital accelerator (DA) is an alternative to high-voltage electrostatic accelerators and conventional cyclotrons and synchrotrons, which are commonly used as swift heavy ion beam drivers. Compared with conventional accelerators, KEK-DA is ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98d7ac60f0ee1f91ee544c523d823812
https://doi.org/10.1016/j.nimb.2013.05.029
https://doi.org/10.1016/j.nimb.2013.05.029
Publikováno v:
IEEE Transactions on Plasma Science. 40:2205-2210
Silicon carbide (SiC) is one of the most promising materials for next-generation power electronic devices, owing to its superior physical properties. Among existing SiC power devices, the SiC junction field-effect transistor (JFET) (SiC-JFET) has exc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e99f475fe5a60ec072f76f50624408b
https://doi.org/10.1109/tps.2012.2207129
https://doi.org/10.1109/tps.2012.2207129
Publikováno v:
Materials Science Forum. :1029-1032
A high power discrete SiC-JFET package for accelerator applications has been developed and tested. Successful operation with a dc voltage of 1 kV, a drain current of 27 A, and a repetition rate of 1 MHz was confirmed. Thermal analysis was carefully a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c31c904bd481616d2a31e73457bfe560
https://doi.org/10.4028/www.scientific.net/msf.717-720.1029
https://doi.org/10.4028/www.scientific.net/msf.717-720.1029
Autor:
Masayoshi Wake, Hiroshi Tanaka, Katsuya Okamura, Ken Takayama, Weihua Jiang, Koichi Takaki, Keiichi Ise
Publikováno v:
IEEE Transactions on Plasma Science. 39:730-736
This paper evaluates the capability of a silicon carbide junction field-effect transistor for an induction synchrotron. The device was operated with a repetition rate of 1 MHz, a drain-source voltage of 1 kV, and a drain current of 50 A in burst mode
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c426e5507f2109f66a8ee90a8187cab9
https://doi.org/10.1109/tps.2010.2090671
https://doi.org/10.1109/tps.2010.2090671
Autor:
Masayoshi Wake, D. Turrioni, Ryuji Yamada, Takao Takeuchi, Alexander Zlobin, M. Tartaglia, Allen Rusy, Vesselin Velev, Guram Chlachidze, Emanuela Barzi, Akihiro Kikuchi
Publikováno v:
IEEE Transactions on Applied Superconductivity. 20:1399-1403
The Nb3Al small racetrack magnet, SR07, has been successfully built and tested to its short sample limit beyond 10 Tesla without any training. Thus the practical application of Nb3Al strands for high field accelerator magnets is established. The char
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76174dce821f51ee5ee8c07765afd51c
https://doi.org/10.1109/tasc.2009.2039990
https://doi.org/10.1109/tasc.2009.2039990
Autor:
N. Andreev, Masayoshi Wake, M.J. Lamm, V.V. Kashikin, Emanuela Barzi, M.A. Tartaglia, R. Carcagno, Ryuji Yamada, Guram Chlachidze, Alexander V. Zlobin, Giorgio Ambrosio, Daniele Turrioni, J.C. Tompkins, D.F. Orris, C. Sylvester, Akihiro Kikuchi, S. Kotelnikov, Takao Takeuchi, A. Yuan, Igor Novitski
Publikováno v:
IEEE Transactions on Applied Superconductivity. 19:1116-1120
In collaboration between NIMS and Fermilab, we have made copper stabilized Nb3Al Rutherford cables, using Nb-matrixed and Ta-matrixed strands. First these cables were investigated at high current in low self field using a flux pump. Using these Ruthe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae0620d55097e63a49855425006239ea
https://doi.org/10.1109/tasc.2009.2018531
https://doi.org/10.1109/tasc.2009.2018531