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Bersweiler, M.*; Oba, Yojiro; Sinaga, E. P.*; Peral, I.*; Titov, I.*; Adams, M. P.*; Rai, V.*; Metlov, K. L.*; Michels, A.*
Physical Review B, 108(9), p.094434_1 - 094434_7, 2023/09
Times Cited Count:4 Percentile:54.88(Materials Science, Multidisciplinary)Bersweiler, M.*; Sato, Hirokazu*; Adachi, Nozomu*; Todaka, Yoshikazu*; Peral, I.*; Kohlbrecher, J.*; Zaporozhets, V. D.*; Metlov, K. L.*; Michels, A.*; Oba, Yojiro
IUCrJ, 10(4), p.411 - 419, 2023/07
Times Cited Count:2 Percentile:47.77(Chemistry, Multidisciplinary)Zaporozhets, V. D.*; Oba, Yojiro; Michels, A.*; Metlov, K. L.*
Journal of Applied Crystallography, 55(3), p.592 - 600, 2022/06
Times Cited Count:8 Percentile:81.17(Chemistry, Multidisciplinary)Oba, Yojiro; Bersweiler, M.*; Titov, I.*; Adachi, Nozomu*; Todaka, Yoshikazu*; Gilbert, E. P.*; Steinke, N.-J.*; Metlov, K. L.*; Michels, A.*
Physical Review Materials (Internet), 5(8), p.084410_1 - 084410_9, 2021/08
Times Cited Count:3 Percentile:14.38(Materials Science, Multidisciplinary)Bersweiler, M.*; Sinaga, E. P.*; Peral, I.*; Adachi, Nozomu*; Bender, P.*; Steinke, N.-J.*; Gilbert, E. P.*; Todaka, Yoshikazu*; Michels, A.*; Oba, Yojiro
Physical Review Materials (Internet), 5(4), p.044409_1 - 044409_7, 2021/04
Times Cited Count:8 Percentile:40.09(Materials Science, Multidisciplinary)Yang, Z. H.*; Kubota, Yuki*; Corsi, A.*; Yoshida, Kazuki; Sun, X.-X.*; Li, J. G.*; Kimura, Masaaki*; Michel, N.*; Ogata, Kazuyuki*; Yuan, C. X.*; et al.
Physical Review Letters, 126(8), p.082501_1 - 082501_8, 2021/02
Times Cited Count:56 Percentile:96.11(Physics, Multidisciplinary)A quasifree (,
) experiment was performed to study the structure of the Borromean nucleus
B, which had long been considered to have a neutron halo. By analyzing the momentum distributions and exclusive cross sections, we obtained the spectroscopic factors for
and
orbitals, and a surprisingly small percentage of 9(2)% was determined for
. Our finding of such a small
component and the halo features reported in prior experiments can be explained by the deformed relativistic Hartree-Bogoliubov theory in continuum, revealing a definite but not dominant neutron halo in
B. The present work gives the smallest
- or
-orbital component among known nuclei exhibiting halo features and implies that the dominant occupation of
or
orbitals is not a prerequisite for the occurrence of a neutron halo.
Kaya, L.*; Vogt, A.*; Reiter, P.*; Siciliano, M.*; Shimizu, Noritaka*; Utsuno, Yutaka; Wang, H.-K.*; Gargano, A.*; Coraggio, L.*; Itaco, N.*; et al.
Physical Review C, 100(2), p.024323_1 - 024323_18, 2019/08
Times Cited Count:13 Percentile:74.37(Physics, Nuclear)no abstracts in English
Jentschel, M.*; Blanc, A.*; de France, G.*; Kster, U.*; Leoni, S.*; Mutti, P.*; Simpson, G.*; Soldner, T.*; Ur, C.*; Urban, W.*; et al.
Journal of Instrumentation (Internet), 12(11), p.P11003_1 - P11003_33, 2017/11
Times Cited Count:43 Percentile:85.09(Instruments & Instrumentation)Koide, Yoshihiko; Yoshida, Kiyoshi; Wanner, M.*; Barabaschi, P.*; Cucchiaro, A.*; Davis, S.*; Decool, P.*; Di Pietro, E.*; Disset, G.*; Genini, L.*; et al.
Nuclear Fusion, 55(8), p.086001_1 - 086001_7, 2015/08
Times Cited Count:35 Percentile:83.16(Physics, Fluids & Plasmas)The most distinctive feature of the superconducting magnet system for JT-60SA is the optimized coil structure in terms of the space utilization as well as the highly accurate coil manufacturing, thus meeting the requirements for the steady-state tokamak research: A conceptually new outer inter-coil structure separated from the casing is introduced to the toroidal field coils to realize their slender shape, allowing large-bore diagnostic ports for detailed plasma measurements. A method to minimize the manufacturing error of the equilibrium-field coils has been established, aiming at the precise plasma shape/position control. A compact butt-joint has been successfully developed for the Central Solenoid, which allows an optimized utilization of the limited space for the Central Solenoid to extend the duration of the plasma pulse.
Sahin, E.*; Doncel, M.*; Sieja, K.*; De Angelis, G.*; Gadea, A.*; Quintana, B.*; Grgen, A.*; Modamio, V.*; Mengoni, D.*; Valiente-Dob
n, J. J.*; et al.
Physical Review C, 91(3), p.034302_1 - 034302_9, 2015/03
Times Cited Count:26 Percentile:82.48(Physics, Nuclear)Yoshida, Kiyoshi; Murakami, Haruyuki; Kizu, Kaname; Tsuchiya, Katsuhiko; Kamiya, Koji; Koide, Yoshihiko; Phillips, G.*; Zani, L.*; Wanner, M.*; Barabaschi, P.*; et al.
IEEE Transactions on Applied Superconductivity, 24(3), p.4200806_1 - 4200806_6, 2014/06
Times Cited Count:13 Percentile:54.93(Engineering, Electrical & Electronic)The upgrade of the JT-60U magnet system to the superconducting coils (JT-60SA) is progressing as a satellite facility for ITER by Japan and EU in the BA agreement. All components of magnet system are now under manufacturing in mass production. The first superconducting EF conductor was manufactured in 2010 in Japan. First superconducting coil EF4 was manufactured in 2012. Other EF5 and EF6 coils shall be manufactured by 2013 to install temporally on the cryostat base before the assembly of the plasma vacuum vessel. CS model coil is fabricated to qualify all manufacturing process of NbSn conductor. The first TF conductor was manufactured in 2012. The cryogenic requirements for JT-60SA are about 9 kW at 4.5K. Each coil is connected through an in-cryostat feeder to the current leads located outside the cryostat in the CTB. A total of 26 HTS current leads are installed in the CTB. The manufacturing of the magnet system is in progress to provide components to assembly the Tokamak machine.
Yoshida, Kiyoshi; Kizu, Kaname; Tsuchiya, Katsuhiko; Murakami, Haruyuki; Kamiya, Koji; Payrot, M.*; Zani, L.*; Wanner, M.*; Barabaschi, P.*; Heller, R.*; et al.
IEEE Transactions on Applied Superconductivity, 22(3), p.4200304_1 - 4200304_4, 2012/06
Times Cited Count:22 Percentile:69.43(Engineering, Electrical & Electronic)The JT-60SA is progressing as a "satellite" facility for ITER in the Broader Approach agreement. The fabrications of the conductor for CS and EF coils were started in 2008. The first superconducting conductor of EF4 coil was manufactured at March 2010. The manufacturing tools for EF coils are design and prepared from 2009. The double pancake using the superconductor has been started at 2011. The TF coil case encloses the winding pack and is the main structural component of the magnet system. The interface between TF case and CS and EF coil were designed. The conductor for TF coils fabrication has been started. The cryogenic system is equivalent to be about 9 kW refrigeration at 4.5 K. Each coil is electrically connected through the in-cryostat feeder and the coil terminal boxes. The 26 current leads using high temperature superconductor. The manufacturing of superconducting magnet for JT-60SA are started by solving its cost and technology.
Matsukawa, Makoto; Kikuchi, Mitsuru; Fujii, Tsuneyuki; Fujita, Takaaki; Hayashi, Takao; Higashijima, Satoru; Hosogane, Nobuyuki; Ikeda, Yoshitaka; Ide, Shunsuke; Ishida, Shinichi; et al.
Fusion Engineering and Design, 83(7-9), p.795 - 803, 2008/12
Times Cited Count:17 Percentile:71.33(Nuclear Science & Technology)no abstracts in English
Henry, D.*; Michel, F.*; Roussel, P.*; Reynaud, P.*; Journeaux, J. Y.*; Marchal, J. L.*; Balaguer, D.*; Roux, C.*; Matsukawa, Makoto; Yoshida, Kiyoshi
AIP Conference Proceedings 985, p.445 - 452, 2008/03
Times Cited Count:0 Percentile:0.00(Thermodynamics)In the framework of the ITER Broader Approach, CEA is carrying out the procurement of the Cryogenic System to the JA-EU Satellite Tokamak JT-60SA, which should be operated in Japan at JAEA, Naka in 2014. According to the Conceptual Design Report, JT-60SA is to operate for periods of at least 6 months per year, with major shutdown periods in between for maintenance and further installation upgrades. For this operation scenario, the cryoplant and the cryodistribution have to cope with different heat loads which depend on the different JT-60SA operating states. The cryoplant consists of one 4.5 K refrigerator and one 80 K helium loop, each pre-cooled by LN2. These cryogenic subsystems have to operate simultaneously in order to remove the heat loads from the superconducting magnets, 80 K shields and the divertor cryopumps. The first part of this study is based on the Process Flow Diagram (PFD) and presents the current design status of the JT-60SA cryogenic system. The second part is dedicated to the analysis of the cryoplant normal operation modes including the regeneration mode of the divertor cryopumps.
Dong, M. A.*; Bufford, J. L.*; Ono, Yutaka; Church, K.*; Dau, M. Q.*; Michels, K.*; Haughton, M.*; Tallman, G.*
Plant Physiology, 145(2), p.367 - 377, 2007/10
Times Cited Count:3 Percentile:8.94(Plant Sciences)Cultured guard cell protoplasts (GCP) of Nicotiana glauca, tree tobacco, comprise a novel system for investigating the cell signaling mechanisms that lead to acquired thermotolerance and thermoinhibition. At 32 C in a medium containing an auxin and a cytokinin, GCP expand, regenerate cell walls, dedifferentiate, and divide. At 38
C, GCP acquire thermotolerance, but their expansion is limited and they neither regenerate walls nor re-enter the cell cycle. Protoplasts were transformed with the fusion gene of BA auxin-responsive promoter and green fluorescent protein (GFP) gene. Heat suppressed auxin-mediated activation of BA. Heat-stressed cells accumulate reactive oxygen species, and H
O
suppresses auxin-responsive promoter activation. H
O
did not suppress BA activation at 32
C, nor did superoxide and H
O
scavengers prevent BA suppression at 38
C.
Kato, Takashi; ; ; Matsui, Kunihiro; ; Tsuji, Hiroshi; N.Michel*; Yoshida, Kiyoshi; Shimamoto, Susumi
Fusion Technology, 30(3), p.1253 - 1257, 1996/12
no abstracts in English
Kamiya, Koji; Onishi, Yoshihiro; Koide, Yoshihiko; Yoshida, Kiyoshi; Michel, F.*
no journal, ,
A final specification of the JT-60SA helium refrigerator was agreed between EU and Japan on September 2012, and the procurement arrangement was signed in November 2012. The JT-60SA helium refrigerator consists of the cold box, auxiliary cold box, helium compressors, and helium gas storage tanks. JT-60SA helium refrigerator cools superconducting coils, structures, high temperature superconducting current leads, thermal shield, and cryopanel. A cooling power of the refrigerator is approximately 9 kW at 4.5 K. This study reports detailed specification and schedule of the JT-60SA helium refrigerator.
Dong, M.*; Bufford, J. L.*; Ono, Yutaka; Church, K.*; Dau, M. Q.*; Michels, K.*; Haughton, M.*; Tallman, G.*
no journal, ,
At 32C in media containing an auxin and a cytokinin, cultured guard cell protoplasts (GCP) of Nicotiana glauca (Graham), expand, regenerate cell walls, dedifferentiate, and divide. At 38
C, GCP acquire thermotolerance within 24 h but their expansion is limited and they neither regenerate walls nor re-enter the cell cycle. Protoplasts were transformed with BA-mgfp5-ER. After 21 h in media with NAA, 49.0% and 7.9% of GCP transformed with BA-mgfp5-ER expressed GFP at 32
C and 38
C, respectively. Expression at 38
C was not increased by incubating GCP for 48 h or by increasing NAA concentrations 20X. Tiron and N-acetylcysteine, superoxide and H
O
scavengers, respectively, did not prevent BA suppression at 38
C nor did H
O
suppress BA activation at 32
C.
Bersweiler, M.*; Sinaga, E. P.*; Peral, I.*; Adachi, Nozomu*; Bender, P.*; Steinke, N.-J.*; Gilbert, E. P.*; Todaka, Yoshikazu*; Oba, Yojiro; Michels, A.*
no journal, ,