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Journal Articles

Operation of the AVF cyclotron

Okumura, Susumu; Ishibori, Ikuo; Kurashima, Satoshi; Yoshida, Kenichi; Yuyama, Takahiro; Ishizaka, Tomohisa; Miyawaki, Nobumasa; Kashiwagi, Hirotsugu; Yuri, Yosuke; Nara, Takayuki; et al.

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 172, 2013/01

The AVF cyclotron was operated from May 9th in fiscal 2011 and all the planned experiments on April were cancelled due to scheduled blackouts originated from the Great East Japan Earthquake. The total operation time amounted to 3,038.4 hours. The extended operation from Friday evening to Saturday evening was carried out eight times in order to supply the cancellation on April. The regular yearly overhaul and maintenance were carried out.

JAEA Reports

Investigation on cause of outage of Wide Range Monitor (WRM) in High Temperature engineering Test Reactor (HTTR); Transport operation toward investigation for cause of outage

Shinohara, Masanori; Sawahata, Hiroaki; Kawamoto, Taiki; Motegi, Toshihiro; Saito, Kenji; Takada, Shoji; Yoshida, Naoaki; Isozaki, Ryosuke; Katsuyama, Kozo

JAEA-Technology 2012-025, 31 Pages, 2012/08

JAEA-Technology-2012-025.pdf:4.69MB

An event, in which one of WRMs were disabled to detect the neutron flux in the reactor core, occurred during the period of reactor shut down of HTTR in March, 2010. The actual life time of WRM was unexpectedly shorter than the past developed life time. Investigation of the cause of the outage of WRM toward the recovery of the life time up to the developed life is one of the issues to develop the technology basis of High Temperature Gas cooled Reactor (HTGR). Then, a post irradiation examination was planned to specify the damaged part causing the event in the WRM was also planned. For the investigation, the X-ray computed tomography scanner in Fuels Monitoring Facility (FMF). This report describes the preliminary investigation on the cause of outage of the WRM. The results of study for transportation method of the irradiated WRM from HTTR to FMF is also reported with the record to complete the transport operation.

Journal Articles

Operation of the AVF cyclotron

Nara, Takayuki; Ishibori, Ikuo; Kurashima, Satoshi; Yoshida, Kenichi; Yuyama, Takahiro; Ishizaka, Tomohisa; Okumura, Susumu; Miyawaki, Nobumasa; Kashiwagi, Hirotsugu; Yuri, Yosuke; et al.

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 172, 2012/01

no abstracts in English

Journal Articles

Operation of the AVF cyclotron

Nara, Takayuki; Ishibori, Ikuo; Kurashima, Satoshi; Yoshida, Kenichi; Yuyama, Takahiro; Ishizaka, Tomohisa; Okumura, Susumu; Miyawaki, Nobumasa; Kashiwagi, Hirotsugu; Yuri, Yosuke; et al.

JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 180, 2011/01

no abstracts in English

Journal Articles

Recent progress in the energy recovery linac project in Japan

Sakanaka, Shogo*; Akemoto, Mitsuo*; Aoto, Tomohiro*; Arakawa, Dai*; Asaoka, Seiji*; Enomoto, Atsushi*; Fukuda, Shigeki*; Furukawa, Kazuro*; Furuya, Takaaki*; Haga, Kaiichi*; et al.

Proceedings of 1st International Particle Accelerator Conference (IPAC '10) (Internet), p.2338 - 2340, 2010/05

Future synchrotron light source using a 5-GeV energy recovery linac (ERL) is under proposal by our Japanese collaboration team, and we are conducting R&D efforts for that. We are developing high-brightness DC photocathode guns, two types of cryomodules for both injector and main superconducting (SC) linacs, and 1.3 GHz high CW-power RF sources. We are also constructing the Compact ERL (cERL) for demonstrating the recirculation of low-emittance, high-current beams using above-mentioned critical technologies.

Journal Articles

Operation of the AVF cyclotron

Nara, Takayuki; Ishibori, Ikuo; Kurashima, Satoshi; Yoshida, Kenichi; Yuyama, Takahiro; Ishizaka, Tomohisa; Okumura, Susumu; Miyawaki, Nobumasa; Kashiwagi, Hirotsugu; Yuri, Yosuke; et al.

JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 190, 2008/11

no abstracts in English

Journal Articles

Operation of AVF cyclotron

Nara, Takayuki; Agematsu, Takashi; Ishibori, Ikuo; Kurashima, Satoshi; Yoshida, Kenichi; Yuyama, Takahiro; Ishizaka, Tomohisa; Okumura, Susumu; Miyawaki, Nobumasa; Kashiwagi, Hirotsugu; et al.

JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 204, 2008/03

no abstracts in English

Journal Articles

Present status of AVF cyclotron at JAEA

Yuyama, Takahiro; Nara, Takayuki; Ishibori, Ikuo; Kurashima, Satoshi; Yoshida, Kenichi; Ishizaka, Tomohisa; Okumura, Susumu; Miyawaki, Nobumasa; Kashiwagi, Hirotsugu; Yuri, Yosuke; et al.

Proceedings of 5th Annual Meeting of Particle Accelerator Society of Japan and 33rd Linear Accelerator Meeting in Japan (CD-ROM), p.259 - 261, 2008/00

no abstracts in English

Journal Articles

Operation of JAEA AVF cyclotron system

Nara, Takayuki; Agematsu, Takashi; Ishibori, Ikuo; Kurashima, Satoshi; Yoshida, Kenichi; Okumura, Susumu; Miyawaki, Nobumasa; Kashiwagi, Hirotsugu; Yuri, Yosuke; Yokota, Wataru; et al.

JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 196, 2007/02

no abstracts in English

Journal Articles

Operation of JAERI AVF cyclotron system

Nara, Takayuki; Agematsu, Takashi; Ishibori, Ikuo; Kurashima, Satoshi; Yoshida, Kenichi; Fukuda, Mitsuhiro; Okumura, Susumu; Miyawaki, Nobumasa; Kashiwagi, Hirotsugu; Nakamura, Yoshiteru; et al.

JAEA-Review 2005-001, TIARA Annual Report 2004, P. 370, 2006/01

no abstracts in English

Journal Articles

Status report on JAERI-AVF cyclotron system

Nara, Takayuki; Agematsu, Takashi; Ishibori, Ikuo; Kurashima, Satoshi; Yoshida, Kenichi; Fukuda, Mitsuhiro; Okumura, Susumu; Miyawaki, Nobumasa; Nakamura, Yoshiteru; Akaiwa, Katsuhiro*; et al.

Proceedings of 1st Annual Meeting of Particle Accelerator Society of Japan and 29th Linear Accelerator Meeting in Japan, p.209 - 211, 2004/08

no abstracts in English

Journal Articles

Development of a knowledge based system linked to a materials database

Kaji, Yoshiyuki; Tsuji, Hirokazu; Fujita, Mitsutane*; Xu, Y.*; Yoshida, Kenji*; Mashiko, Shinichi*; Shimura, Kazuki*; Miyakawa, Shunichi*; Ashino, Toshihiro*

Data Science Journal (Internet), 3, p.88 - 94, 2004/07

The distributed material database system named "Data-Free-Way" has been developed by four organizations (the National Institute for Materials Science, the Japan Atomic Energy Research Institute, the Japan Nuclear Cycle Development Institute, and the Japan Science and Technology Corporation) under a cooperative agreement. In order to create additional values of the system, knowledge base system, in which knowledge extracted from the material database is expressed, is planned to be developed for more effective utilization of Data-Free-Way. XML (eXtensible Markup Language) has been adopted as the description method of the retrieved results and the meaning of them. One knowledge note described with XML is stored as one knowledge which composes the knowledge base. This paper describes the current status of Data-Free-Way, the description method of knowledge extracted from the material database with XML and the distributed material knowledge base system.

Journal Articles

Status report on the JAERI AVF cyclotron system

Nakamura, Yoshiteru; Nara, Takayuki; Agematsu, Takashi; Ishibori, Ikuo; Tamura, Hiroyuki; Kurashima, Satoshi; Yokota, Wataru; Okumura, Susumu; Fukuda, Mitsuhiro; Akaiwa, Katsuhiro*; et al.

Proceedings of 13th Symposium on Accelerator Science and Technology, p.193 - 195, 2001/00

The AVF cyclotron system at JAERI Takasaki has been smoothly operated without serious troubles since the first beam extraction in March, 1991. A yearly operation time is about 3200 hours on an average for recent eight years. In last two years, we performed some improvements and developments as followings: stabilization of the cyclotron beam by addition on an exclusive cooling system, designing and investigation of the flat-top system using fifth-harmonic RF, reconstruction of the rotary shutter for radiation shielding and reinforcement of the magnetic channel and its power supply. Furthermore, the renewal of main circulation pump for cooling system, replacement of shunt resistor in the power supplies and re-alignment of the several magnets along the trunk beam transport line were also carried out.

Journal Articles

Improvement of SiO$$_{2}$$/4H-SiC interface by using high temperature hydrogen annealing at 1000$$^{circ}$$C

Fukuda, Kenji*; Nagai, Kiyoko*; Sekigawa, Toshihiro*; Yoshida, Sadafumi*; Arai, Kazuo*; Yoshikawa, Masahito

Proceedings of 1998 International Conference on Solid State Devices and Materials (SSDM 1998), p.100 - 101, 1998/00

no abstracts in English

Journal Articles

Investigation of causality in the H-L transition on the JFT-2M tokamak

*; *; *; *; *; *; *; Oikawa, Toshihiro; *; *; et al.

Fusion Energy 1996, p.885 - 890, 1997/05

no abstracts in English

JAEA Reports

None

; ; Yoshida, Hidekazu; Todaka, Norifumi; ; Koide, Kaoru; Seo, Toshihiro

PNC TN7070 96-002, 20 Pages, 1996/11

PNC-TN7070-96-002.pdf:1.35MB

no abstracts in English

JAEA Reports

None

Niimi, Ken; Osawa, Hideaki; Yanagizawa, Koichi; ; Yoshida, Hidekazu; Seo, Toshihiro;

PNC TN7410 94-022, 190 Pages, 1994/03

PNC-TN7410-94-022.pdf:6.06MB

None

JAEA Reports

Data compilation of geoscientific studies of Tono urnium deposits,central Japan

Yoshida, Hidekazu; Seo, Toshihiro; ; ; ; ;

PNC TN7410 94-015, 65 Pages, 1994/03

PNC-TN7410-94-015.pdf:7.63MB

Results to data of the geological, geochemical and hydrogeological studies in the To site has been prepared as an aid to discussion of the joint PNC/Nagra Tono AnaloguProject (TAP). It forms a outline of a geological, geochemical and hydrogeological sdies which have been conducted in the Tono site and includes an data which could be sessed by participants of the TAP. This catalogue has been compiled as a rather overl information which will act as a basis to evaluate the feasibility of the TAP.

Oral presentation

Present status of AVF cyclotron system

Nara, Takayuki; Agematsu, Takashi; Ishibori, Ikuo; Kurashima, Satoshi; Yoshida, Kenichi; Yokota, Wataru; Fukuda, Mitsuhiro*; Okumura, Susumu; Miyawaki, Nobumasa; Kashiwagi, Hirotsugu; et al.

no journal, , 

no abstracts in English

Oral presentation

Present status of JAEA AVF cyclotron system

Nara, Takayuki; Agematsu, Takashi; Ishibori, Ikuo; Kurashima, Satoshi; Yoshida, Kenichi; Yuyama, Takahiro; Ishizaka, Tomohisa; Yokota, Wataru; Okumura, Susumu; Miyawaki, Nobumasa; et al.

no journal, , 

no abstracts in English

25 (Records 1-20 displayed on this page)