Present status of the injector for IFMIF Linear Prototype Accelerator (LIPAc)

Shinto, Katsuhiro; Ichikawa, Masahiro; Takahashi, Hiroki; Kondo, Keitaro; Kasugai, Atsushi; Gobin, R.*; Sene, F.*; Chauvin, N.*; Ayala, J.-M.*; Marqueta, A.*; et al.

Proceedings of 12th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.493 - 495, 2015/09

http://www.pasj.jp/web_publish/pasj2015/proceedings/PDF/WEP0/WEP032.pdf

Development of the prototype accelerator (LIPAc) for the engineering validation of the International Fusion Materials Irradiation Facility (IFMIF) which is an accelerator driven neutron source has been progressed at Rokkasho. The LIPAc is a deuteron linear accelerator consisting of an injector, a radio-frequency quadrupole (RFQ) linac and a superconducting linac. The objective of LIPAc is to produce a CW beam with the energy and current of 9 MeV and 125 mA, respectively. The injector was developed at CEA/Saclay and succeeded to produce CW proton and deuteron beams of 100 keV/140 mA by autumn 2012. After the test at CEA/Saclay, the injector was shipped to the International Fusion Energy Research Centre (IFERC) in Rokkasho, Aomori and started to reassemble from the end of 2013. It was successfully produced proton beams in November 2014 at Rokkasho. While the ion source conditioning was done, the beam test was progressed. In this paper, the present status of the LIPAc injector at Rokkasho with some experimental results will be presented.

Activation analyses of air by deuteron beam at 5-9 MeV

Takahashi, Hiroki; Maebara, Sunao; Sakaki, Hironao; Ichikawa, Masahiro; Suzuki, Hiromitsu; Sugimoto, Masayoshi

Progress in Nuclear Science and Technology (Internet), 4, p.261 - 263, 2014/04

https://doi.org/10.15669/pnst.4.261

An development of accelerator-based neutron irradiation facility is planning to develop materials for a demonstration fusion reactor. To obtain a 14 MeV neutron energy using the neutron-generating D-Li stripping reaction, an injection into liquid lithium flow by a 40 MeV deuteron beam is employed in IFMIF design concept. In the acceleration of deuteron beam, the activation due to the beam loss is critical issue. The activation analyses for the air in an accelerator vault are carried out by PHITS code and DCHAIN code using the experimental data for deuteron induced thick target neutron yield at 5 MeV and 9 MeV for source term.

Effect of hydrogenation on the electronic state of metallic La hydrides probed by X-ray absorption sectroscopy at the La -edges

Ishimatsu, Naoki*; Sasada, Ryohei*; Maruyama, Hiroshi*; Ichikawa, Takayuki*; Miyaoka, Hiroki*; Kimura, Toru*; Tsubota, Masami*; Kojima, Yoshitsugu*; Tsumuraya, Takao*; Oguchi, Tamio*; et al.

Journal of Physics; Conference Series, 190, p.012070_1 - 012070_4, 2009/11

https://doi.org/10.1088/1742-6596/190/1/012070

We have investigated the effect of hydrogenation on La and electronic states in metallic LaH by X-ray absorption near edge structure at the La -edges. As the hydrogen content increases from 0 to 2.6, white-line intensity at the La -edges shows a remarkable increase in the range of 2.0. This is interpreted as the increase in La hole induced by interstitial H atoms on the octahedral sites. On the other hand, the shoulder structure at the La -edge disappears in the process of = 0.0 2.0, indicating that the - hybridization is weakened by H atoms on the tetrahedral sites. This study demonstrates that H atoms on the two interstitial H sites provide different contribution to the modification of the electronic states.

Fracture toughness and mechanical properties of aluminum alloys for research reactors

Shibata, Katsuyuki; ; ; Kodaira, Tsuneo; Ichikawa, Hiroki

JAERI-Research 97-015, 59 Pages, 1997/03

JAERI-Research-97-015.pdf:2.36MB

no abstracts in English

Fuel melting and mechanical energy generation during power burst experiments with aluminum-cladding uranium silicide fuel plate

Fuketa, Toyoshi; Ishijima, Kiyomi; ; Soyama, Kazuhiko; Ichikawa, Hiroki; Kodaira, Tsuneo

JAERI-Research 95-077, 28 Pages, 1995/10

JAERI-Research-95-077.pdf:2.49MB

no abstracts in English

Transient behavior of low enriched uranium silicide plate type fuel for research reactors during reactivity initiated accident conditions

Yanagisawa, Kazuaki; ; Horiki, Oichiro; Soyama, Kazuhiko; Ichikawa, Hiroki; Kodaira, Tsuneo

Journal of Nuclear Science and Technology, 30(8), p.741 - 751, 1993/08

https://doi.org/10.3327/jnst.30.741

no abstracts in English

Transient behavior of silicide plate-type fuel during reactivity initiated accident conditions

Yanagisawa, Kazuaki; ; Soyama, Kazuhiko; Ichikawa, Hiroki; Kodaira, Tsuneo

Proc. of the 16th RERTR Meeting, 16 Pages, 1993/00

no abstracts in English

Dimensional stability of low enriched uranium silicide plate-type fuel for research reactors at transient conditions

Yanagisawa, Kazuaki; ; Horiki, Oichiro; Soyama, Kazuhiko; Ichikawa, Hiroki; Kodaira, Tsuneo

Journal of Nuclear Science and Technology, 29(3), p.233 - 243, 1992/03

https://doi.org/10.3327/jnst.29.233

no abstracts in English

Technical report: Technical development on silicide plate-type fuel experiment at Nuclear Safety Research Reactor

Yanagisawa, Kazuaki; Soyama, Kazuhiko; Ichikawa, Hiroki; ; Hoshino, Osamu; ; ; ; Kanazawa, Hiroyuki; Kimura, Yasuhiko; et al.

JAERI-M 91-114, 67 Pages, 1991/08

JAERI-M-91-114.pdf:4.28MB

no abstracts in English

Design study on a very long life light water power reactor core

Naito, Yoshitaka; Furuta, Teruo; Ichikawa, Hiroki; Takano, Hideki

JAERI-M 91-028, 151 Pages, 1991/03

JAERI-M-91-028.pdf:4.53MB

no abstracts in English