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Haruyama, Yasuyuki; Takizawa, Haruki; Hosono, Masakazu; Mizuhashi, Kiyoshi*; Nakamura, Yoshiteru*; Kaneya, Satoshi*; Asai, Takahiro*; Kawabata, Michiko*; Imai, Koji*
JAEA-Review 2013-059, JAEA Takasaki Annual Report 2012, P. 177, 2014/03
Cyclotron use in FY 2012, was 2243.5 hours beam time. Among them, the use time of Bio technology and Medical application relationship most, I occupy the time spent for the Quarter of the total. Use offer to the outside utilization was 17%. Use the number of days in Electrostatic Accelerators was 490 days. Among them, Basic technology is accounted for using the percentage of 46%, but the use of irradiation Reactor materials and irradiation of Material for space even more, I accounted for 18 percent utilization rate, respectively, of 15%. Use offer to the outside utilization was 8%.
Mizuhashi, Kiyoshi; Takizawa, Haruki; Hosono, Masakazu; Nakamura, Yoshiteru*; Kaneya, Satoshi*; Mochizuki, Seigo*; Asai, Takahiro*; Kawabata, Michiko*; Daikubara, Kazuko*
JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 171, 2013/01
Fiscal year 2011 was significantly influenced by the East Japan Great Earthquake (March 11, 2011). The operation of the TIARA facility which was being planned from April started from the middle of May. Lost beam-time of the experiment due to the great earthquake was compensated with operations on Saturday biweekly. And it was obliged to re-examine the operation plan during the period of electric power reduction in July, August, and September. The demanded reduction rate of electric power in daytime for summer season was 15% as compared with 2010. The limited value in daytime was 3,600 kW. Therefore, the experiment in daytime was conducted with light ions (H, D with 
20 MeV) only by the AVF Cyclotron. As mentioned above, the electric power in the daytime of summer did not exceed 3,200 kW. Moreover, the beam time as an ordinary year was secured.
Shikaze, Yoshiaki; Tanimura, Yoshihiko; Saegusa, Jun; Tsutsumi, Masahiro; Uchida, Yoshiaki*; Yoshizawa, Michio; Harano, Hideki*; Matsumoto, Tetsuro*; Mizuhashi, Kiyoshi
JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 158, 2011/01
no abstracts in English
Yamada, Keisuke; Okoshi, Kiyonori; Saito, Yuichi; Orimo, Takao*; Omae, Akiomi*; Yamada, Naoto*; Mizuhashi, Kiyoshi
JAEA-Technology 2008-090, 95 Pages, 2009/03
JAEA-Technology-2008-090.pdf:11.36MB
The 400 kV ion implanter at the Takasaki Ion Accelerators for Advanced Radiation Application facility (TIARA) provides ion beams for various experiments of research and development (R&D's) mainly on materials science and biotechnology using Freeman ion sources. Two methods of ionization are generally used to a Freeman ion source. In one method, a sample gas is directly fed to the plasma chamber, and in the other, vapor of a solid material having high vapor pressure is vaporized by an oven and fed. Those methods, however, can supply limited number of ion species of those required from various R&D's. We have developed new methods available to materials which are difficult to vaporize by an oven: the disc method for high melting point materials, the SF
plasma method for high melting point and low vapor pressure materials, the filament method for metals with melting point higher than 2400 
C, and one of them is chosen according to the nature of a material. Forty four ion species from hydrogen to bismuth are generated by using the Freeman ion sources to date. Furthermore, a small ECR (electron cyclotron resonance) ion source is also developed to generate multiply charged ions for acceleration to higher energies.
Yamada, Keisuke; Agematsu, Takashi; Mizuhashi, Kiyoshi
JAEA-Conf 2008-012, p.134 - 137, 2009/03
no abstracts in English
Yokoyama, Akihito; Ishii, Yasuyuki; Chiba, Atsuya; Uno, Sadanori; Agematsu, Takashi; Takayama, Terumitsu*; Koka, Masashi*; Mizuhashi, Kiyoshi
JAEA-Conf 2008-012, p.138 - 141, 2009/03
no abstracts in English
Uno, Sadanori; Chiba, Atsuya; Yamada, Keisuke; Yokoyama, Akihito; Agematsu, Takashi; Mizuhashi, Kiyoshi; Kitano, Toshihiko*; Takayama, Terumitsu*; Orimo, Takao*; Koka, Masashi*; et al.
JAEA-Conf 2008-012, p.44 - 47, 2009/03
no abstracts in English
Yamada, Keisuke; Uno, Sadanori; Chiba, Atsuya; Yokoyama, Akihito; Saito, Yuichi; Ishii, Yasuyuki; Sato, Takahiro; Okubo, Takeru; Agematsu, Takashi; Mizuhashi, Kiyoshi
JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 185, 2008/11
no abstracts in English
Agematsu, Takashi; Uno, Sadanori; Chiba, Atsuya; Yamada, Keisuke; Yokoyama, Akihito; Saito, Yuichi; Ishii, Yasuyuki; Sato, Takahiro; Okubo, Takeru; Mizuhashi, Kiyoshi; et al.
JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 191, 2008/11
Three electrostatic accelerators were operated smoothly in FY 2007, and all the planned experiments were carried out except those canceled by users. The yearly operation time of the tandem accelerator, the single-ended accelerator and the ion implanter amounted to 1949, 2437 and 1900 hours. The high-pressure residual gas of SF is leaking from the SF gas handling system of the tandem accelerator. The most amount of the leak comes out when the accelerator tank pressure is high. Therefore, in order to reduce the leak by lowering the residual gas pressure, a pipe was installed to carry the gas in the high-pressure part of the system for the accelerator to the low-pressure storage tank. As to the ion implanter, Pb ion, which was requested by users, was successfully generated using oven method and accelerated with intensity of 1.5 
A.
Yokota, Wataru; Nara, Takayuki; Ishibori, Ikuo; Kurashima, Satoshi; Yoshida, Kenichi; Yuyama, Takahiro; Ishizaka, Tomohisa; Agematsu, Takashi; Uno, Sadanori; Chiba, Atsuya; et al.
Proceedings of 5th Annual Meeting of Particle Accelerator Society of Japan and 33rd Linear Accelerator Meeting in Japan (CD-ROM), p.22 - 24, 2008/08
no abstracts in English
Yamada, Keisuke; Saito, Yuichi; Mizuhashi, Kiyoshi; Okoshi, Kiyonori; Orimo, Takao*; Omae, Akiomi*; Yamada, Naoto*
JAEA-Conf 2008-005, p.114 - 117, 2008/03
no abstracts in English
Chiba, Atsuya; Ishii, Yasuyuki; Mizuhashi, Kiyoshi; Kitano, Toshihiko*; Kanai, Shinji*; Aoki, Yuki*
JAEA-Conf 2008-005, p.107 - 109, 2008/03
no abstracts in English
Uno, Sadanori; Takayama, Terumitsu*; Koka, Masashi*; Mizuhashi, Kiyoshi
JAEA-Conf 2008-005, p.118 - 120, 2008/03
no abstracts in English
Yamada, Keisuke; Uno, Sadanori; Okoshi, Kiyonori; Chiba, Atsuya; Saito, Yuichi; Ishii, Yasuyuki; Sato, Takahiro; Mizuhashi, Kiyoshi
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 194, 2008/03
no abstracts in English
beam line separationIshii, Yasuyuki; Chiba, Atsuya; Uno, Sadanori; Saito, Yuichi; Mizuhashi, Kiyoshi; Tajima, Satoshi*; Kamiya, Tomihiro
Nuclear Instruments and Methods in Physics Research B, 260(1), p.15 - 19, 2007/07
Times Cited Count：0 Percentile：0.01(Instruments & Instrumentation)Measurement of beam energy spreads caused by an accelerator are needed to evaluation the choromatic aberration when ion beams with micorometer or nanometer sizes are formed at a focusing point. A measurement method of the beam energy spreads without using a analyzing magnet with a high resolution was developed to evaluate the chromatic aberration in a light-ion micorbeam system connected to the 3MV JAEA single-ended accelerator. The accurate beam energy spread measurement method within a resolution of 10
was developed using resonance nuclear reactions with narrow energy spreads of 
A
(p,
)
Si and 
Mg(p,)
A in a MeV energy range. Furthermore, ion species separating method, in a 0-degree beam line connected to the accelerator, was developed using parmanent magnets attached on the accelerator tube in the accelerator. The two kinds of developmet resulted in measuring baem energy spreads generated from the accelerator directly.
Okoshi, Kiyonori; Uno, Sadanori; Chiba, Atsuya; Yamada, Keisuke; Saito, Yuichi; Ishii, Yasuyuki; Sakai, Takuro; Sato, Takahiro; Mizuhashi, Kiyoshi
JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 192, 2007/02
no abstracts in English
) ion productionYamada, Keisuke; Okoshi, Kiyonori; Saito, Yuichi; Mizuhashi, Kiyoshi; Yokota, Wataru
JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 189, 2007/02
no abstracts in English
Mizuhashi, Kiyoshi; Uno, Sadanori; Okoshi, Kiyonori; Chiba, Atsuya; Yamada, Keisuke; Saito, Yuichi; Ishii, Yasuyuki; Sato, Takahiro; Sakai, Takuro; Yokota, Wataru; et al.
JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 197, 2007/02
Three electrostatic accelerators were almost operated smoothly for various experiments in FY 2005. The yearly operation time of each accelerator amounts to 1974, 2359.9, 1859.9 hour for the tandem, the single-ended and the ion implanter, respectively. Main trouble was a short circuit of a part of the ion source in the single-ended accelerator. This lets to the suspension of operation for fifteen days. As features in FY 2005, the generation of the power cut by thunderbolts and large earthquakes were abounding. By this natural force, the Turbo-molecular pump was broken, experiment was interrupted and then the inspection of accelerator facility was carried out every time. New beam acceleration and improvement of each accelerator were carried out.
) ion generationYamada, Keisuke; Okoshi, Kiyonori; Saito, Yuichi; Mizuhashi, Kiyoshi; Yokota, Wataru
Dai-19-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.106 - 109, 2007/01
no abstracts in English
Chiba, Atsuya; Uno, Sadanori; Okoshi, Kiyonori; Yamada, Keisuke; Saito, Yuichi; Ishii, Yasuyuki; Sakai, Takuro; Sato, Takahiro; Mizuhashi, Kiyoshi
JAEA-Review 2005-001, TIARA Annual Report 2004, p.358 - 360, 2006/01
no abstracts in English
