Refine your search:     
Report No.
 - 
Search Results: Records 1-20 displayed on this page of 76

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Utilization status at TIARA facility

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%.

Journal Articles

Feature in FY2011, utilization status and beam time proportion at TIARA facility

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.

Journal Articles

Establishment of neutron fluence monitoring techniques for quasi-monoenergetic neutron calibration fields of high energy at TIARA

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

JAEA Reports

Ion generation method for TIARA Ion Implanter

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$$_{6}$$ plasma method for high melting point and low vapor pressure materials, the filament method for metals with melting point higher than 2400 $$^{circ}$$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.

Journal Articles

Development of a ion beam intensity distribution monitor for the TIARA 400kV ion implanter

Yamada, Keisuke; Agematsu, Takashi; Mizuhashi, Kiyoshi

JAEA-Conf 2008-012, p.134 - 137, 2009/03

no abstracts in English

Journal Articles

Beam emittance measurement of the RF ion source installed in the single-ended accelerator

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

Journal Articles

Current status of electrostatic accelerators at TIARA

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

Journal Articles

Development of beam generation and irradiation technology for electrostatic accelerator

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

Journal Articles

Operation of the electrostatic accelerators

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$$_{6}$$ is leaking from the SF$$_{6}$$ 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 $$mu$$A.

Journal Articles

Status of accelerators and technical development at TIARA

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

Journal Articles

Ion generation method at TIARA ion implanter

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

Journal Articles

Status of electrostatic accelerators at TIARA; Status of TANDEM accelerator

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

Journal Articles

Partial discharge damage of insulating plastic parts for the single-ended accelerator

Uno, Sadanori; Takayama, Terumitsu*; Koka, Masashi*; Mizuhashi, Kiyoshi

JAEA-Conf 2008-005, p.118 - 120, 2008/03

no abstracts in English

Journal Articles

Development of beam generation and irradiation technology for electrostatic accelerator

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

Journal Articles

High-resolution beam energy-spread measurements using combination of nuclear resonant reactions and a 0$$^{circ}$$ beam line separation

Ishii, 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$$^{-4}$$ was developed using resonance nuclear reactions with narrow energy spreads of $$^{27}$$A$$ell$$(p,$$gamma$$)$$^{28}$$Si and $$^{24}$$Mg(p,$$gamma$$)$$^{25}$$A$$ell$$ 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.

Journal Articles

Development of beam generation and irradiation technology for electrostatic accelerator

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

Journal Articles

The Effect of support gas in fullerene (C$$_{60}$$) ion production

Yamada, 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

Journal Articles

Operation of the electrostatic accelerators

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.

Journal Articles

The Effect of support gas in fullerene(C$$_{60}$$) ion generation

Yamada, 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

Journal Articles

Development of beam generation and irradiation technology for electrostatic accelerators

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

76 (Records 1-20 displayed on this page)