Quantitative measurements of element distributions using the neutron-transmission resonance-absorption method

Harada, Masahide; Parker, J. D.*; Sawano, Tatsuya*; Kubo, Hidetoshi*; Tanimori, Toru*; Shinohara, Takenao; Maekawa, Fujio; Sakai, Kenji

Physics Procedia, 43, p.314 - 322, 2013/00

https://doi.org/10.1016/j.phpro.2013.03.037

The purposes of this study are to perform Neutron Resonance Absorption NRA test experiments using the Micro Pixel Chamber, and to confirm its quantitativity. The detector was located at 14.5 m from the moderator in the experimental room of NOBORU. The samples, consisting of thin Tantalum (Ta) foils, with thicknesses of 5, 10, 20 and 100 m, were placed individually at 15 cm upstream from the detector. In the experiment, the transmission spectra with the Ta samples and no sample were obtained. Background components were not so small in these measurements. From the neutron transport simulation, it was surmised that the origin of this background was due to scattering of neutrons in the experimental room. Therefore, the assumed background components were subtracted from the measurement data. Finally, it was found that the difference between the measurement data and the nuclear data was within about 7%.

Overview of the national centralized tokamak programme

Kikuchi, Mitsuru; Tamai, Hiroshi; Matsukawa, Makoto; Fujita, Takaaki; Takase, Yuichi*; Sakurai, Shinji; Kizu, Kaname; Tsuchiya, Katsuhiko; Kurita, Genichi; Morioka, Atsuhiko; et al.

Nuclear Fusion, 46(3), p.S29 - S38, 2006/03

https://doi.org/10.1088/0029-5515/46/3/S05

The National Centralized Tokamak (NCT) facility program is a domestic research program for advanced tokamak research to succeed JT-60U incorporating Japanese university accomplishments. The mission of NCT is to establish high beta steady-state operation for DEMO and to contribute to ITER. The machine flexibility and mobility is pursued in aspect ratio and shape controllability, feedback control of resistive wall modes, wide current and pressure profile control capability for the demonstration of the high-b steady state.

Experimental and theoretical elastic cross sections for electron collisions with the CH isomers

Makochekanwa, C.*; Kato, Hidetoshi*; Hoshino, Masamitsu*; Tanaka, Hiroshi*; Kubo, Hirotaka; Bettega, M. H. F.*; Lopes, A. R.*; Lima, M. A. P.*; Ferreira, L. G.*

Journal of Chemical Physics, 124(2), p.024323_1 - 024323_9, 2006/00

https://doi.org/10.1063/1.2141950

no abstracts in English

Sequence analysis of the gliding protein Gli349 in

Metsugi. Shoichi; Uenoyama, Atsuko*; Kubo, Jun*; Miyata, Makoto*; Yura, Kei; Kono, Hidetoshi; Go, Nobuhiro

Biophysics, 1, p.33 - 43, 2005/05

https://doi.org/10.2142/biophysics.1.33

The motile mechanism of Mycoplasma mobile remains unknown but is believed to differ from any previously identified mechanism in bacteria. Gli349 of M. mobile is known to be responsible for both adhesion to glass surfaces and mobility. We therefore carried out sequence analyses of Gli349 and its homolog MYPU2110 from M. pulmonis to decipher their structures. We found that the motif "YxxxxxGF" appears 11 times in Gli349 and 16 times in MYPU2110. Further analysis of the sequences revealed that Gli349 contains 18 repeats of about 100 amino acid residues each, and MYPU2110 contains 22. No sequence homologous to any of the repeats was found in the NCBI RefSeq non-redundant sequence database, and no compatible fold structure was found among known protein structures, suggesting that the repeat found in Gli349 and MYPU2110 is novel and takes a new fold structure. Proteolysis of Gli349 using chymotrypsin revealed that cleavage positions were often located between the repeats, implying that regions connecting repeats are unstructured, flexible and exposed to the solvent.

Improvement of confinement and remote radiative cooling of beam heated plasmas in JT-60 with ion ▽B drift towards the X-point

Tsuji, Shunji; Hosogane, Nobuyuki; Itami, Kiyoshi; Kubo, Hirotaka; Nishitani, Takeo; Shimada, Michiya; Koide, Yoshihiko; ; Sugie, Tatsuo; Nagashima, Keisuke; et al.

Nuclear Fusion, 32(8), p.1313 - 1330, 1992/00

https://doi.org/10.1088/0029-5515/32/8/I02

no abstracts in English

Helium ash exhaust studies with core fueling by a helium beam; L-mode divertor discharges with neutral-beam heating in the JT-60 tokamak

Nakamura, Hiroo; Hirayama, Toshio; Koide, Yoshihiko; Tobita, Kenji; Tani, Keiji; Fukuda, Takeshi; Kubo, Hirotaka; Kuriyama, Masaaki; Kusama, Yoshinori; Sakasai, Akira; et al.

Physical Review Letters, 67(19), p.2658 - 2661, 1991/11

https://doi.org/10.1103/PhysRevLett.67.2658

no abstracts in English

Impurity behavior

Sugie, Tatsuo; Kubo, Hirotaka; Sakasai, Akira; Koide, Yoshihiko; Hirayama, Toshio; Shimada, Michiya; Itami, Kiyoshi; Kawano, Yasunori; Nishitani, Takeo; Nagashima, Keisuke; et al.

Kaku Yugo Kenkyu, 65(SPECIAL ISSUE), p.287 - 306, 1991/03

no abstracts in English

Radiation losses and global power balance of JT-60 plasmas

Nishitani, Takeo; Itami, Kiyoshi; Nagashima, Keisuke; Tsuji, Shunji; Hosogane, Nobuyuki; Yoshida, Hidetoshi; Ando, Toshiro; Kubo, Hirotaka; Takeuchi, Hiroshi

Nuclear Fusion, 30(6), p.1095 - 1105, 1990/06

https://doi.org/10.1088/0029-5515/30/6/011

no abstracts in English

Lower hybrid current drive efficiency in the JT-60 tokamak

Ushigusa, Kenkichi; Imai, Tsuyoshi; Ikeda, Yoshitaka; Naito, Osamu; Uehara, Kazuya; Yoshida, Hidetoshi; Kubo, Hirotaka; JT-60 Team

Nuclear Fusion, 29(6), p.1052 - 1055, 1989/06

https://doi.org/10.1088/0029-5515/29/6/015

no abstracts in English

Lower hybrid wave heating into neutral beam heated plasma in the JT-60 tokamak

Ushigusa, Kenkichi; Imai, Tsuyoshi; Ikeda, Yoshitaka; Sakamoto, Keishi; F.X.Soldner*; ; Tsuji, Shunji; Shimizu, Katsuhiro; Naito, Osamu; Uehara, Kazuya; et al.

JAERI-M 88-115, 28 Pages, 1988/06

JAERI-M-88-115.pdf:0.87MB

no abstracts in English