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570 results on '"Ichikawa, M."'

1. Construction of gas electron multiplier tracker for the J-PARC E16 experiment

Author

Murakami, T.N., Aoki, K., Ashikaga, S., En’yo, H., Gunji, T., Hamagaki, H., Ichikawa, M., Kanno, K., Kobayashi, S., Komatsu, Y., Kondo, T.K., Morino, Y., Murakami, H., Muto, R., Nakai, W., Nakasuga, S., Naruki, M., Obara, Y., Ozawa, K., Sekimoto, M., Shibukawa, T., Shigaki, K., Suzuki, K.N., Takagi, A., Takahashi, T.N., Watanabe, Y-S., and Yokkaichi, S.

Published
2024
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2. Empagliflozin in the treatment of heart failure with reduced ejection fraction in addition to background therapies and therapeutic combinations (EMPEROR-Reduced): a post-hoc analysis of a randomised, double-blind trial

Author

Packer, M, Anker, S, Butler, J, Filippatos, G, Pocock, S, Zannad, F, Ferreira, JP, Brueckmann, M, George, J, Jamal, W, Welty, FK, Palmer, M, Clayton, T, Parhofer, KG, Pedersen, TR, Greenberg, B, Konstam, MA, Lees, KR, Carson, P, Doehner, W, Miller, A, Haas, M, Pehrson, S, Komajda, M, Anand, I, Teerlink, J, Rabinstein, A, Steiner, T, Kamel, H, Tsivgoulis, G, Lewis, J, Freston, J, Kaplowitz, N, Mann, J, Petrie, J, Perrone, S, Nicholls, S, Janssens, S, Bocchi, E, Giannetti, N, Verma, S, Zhang, J, Spinar, J, Seronde, M-F, Boehm, M, Merkely, B, Chopra, V, Senni, M, Taddi, S, Tsutsui, H, Choi, D-J, Chuquiure, E, La Rocca, HPB, Ponikowski, P, Juanatey, JRG, Squire, I, Januzzi, J, Pina, I, Bernstein, R, Cheung, A, Green, J, Kaul, S, Lam, C, Lip, G, Marx, N, McCullough, P, Mehta, C, Rosenstock, J, Sattar, N, Scirica, B, Shah, S, Wanner, C, Aizenberg, D, Cartasegna, L, Colombo Berra, F, Colombo, H, Fernandez Moutin, M, Glenny, J, Alvarez Lorio, C, Anauch, D, Campos, R, Facta, A, Fernandez, A, Ahuad Guerrero, R, Lobo Márquez, L, Leon de la Fuente, RA, Mansilla, M, Hominal, M, Hasbani, E, Najenson, M, Moises Azize, G, Luquez, H, Guzman, L, Sessa, H, Amuchástegui, M, Salomone, O, Perna, E, Piskorz, D, Sicer, M, Perez de Arenaza, D, Zaidman, C, Nani, S, Poy, C, Resk, J, Villarreal, R, Majul, C, Smith Casabella, T, Sassone, S, Liberman, A, Carnero, G, Caccavo, A, Berli, M, Budassi, N, Bono, J, Alvarisqueta, A, Amerena, J, Kostner, K, Hamilton, A, Begg, A, Beltrame, J, Colquhoun, D, Gordon, G, Sverdlov, A, Vaddadi, G, Wong, J, Coller, J, Prior, D, Friart, A, Leone, A, Vervoort, G, Timmermans, P, Troisfontaines, P, Franssen, C, Sarens, T, Vandekerckhove, H, Van De Borne, P, Chenot, F, De Sutter, J, De Vuyst, E, Debonnaire, P, Dupont, M, Pereira Dutra, O, Canani, LH, Vieira Moreira, MdC, de Souza, W, Backes, LM, Maia, L, De Souza Paolino, B, Manenti, ER, Saporito, W, Villaça Guimarães Filho, F, Franco Hirakawa, T, Saliba, LA, Neuenschwander, FC, de Freitas Zerbini, CA, Gonçalves, G, Gonçalves Mello, Y, Ascenção de Souza, J, Beck da Silva Neto, L, Bocchi, EA, Da Silveira, J, de Moura Xavier Moraes Junior, JB, de Souza Neto, JD, Hernandes, M, Finimundi, HC, Sampaio, CR, Vasconcellos, E, Neves Mancuso, FJ, Noya Rabelo, MM, Rodrigues Bacci, M, Santos, F, Vidotti, M, Simões, MV, Gomes, FL, Vieira Nascimento, C, Precoma, D, Helfenstein Fonseca, FA, Ribas Fortes, JA, Leães, PE, Campos de Albuquerque, D, Kerr Saraiva, JF, Rassi, S, Alves da Costa, FA, Reis, G, Zieroth, S, Dion, D, Savard, D, Bourgeois, R, Constance, C, Anderson, K, Leblanc, M-H, Yung, D, Swiggum, E, Pliamm, L, Pesant, Y, Tyrrell, B, Huynh, T, Spiegelman, J, Lavoie, J-P, Hartleib, M, Bhargava, R, Straatman, L, Virani, S, Costa-Vitali, A, Hill, L, Heffernan, M, Khaykin, Y, Ricci, J, Senaratne, M, Zhai, A, Lubelsky, B, Toma, M, Yao, L, McKelvie, R, Noronha, L, Babapulle, M, Pandey, A, Curnew, G, Lavoie, A, Berlingieri, J, Kouz, S, Lonn, E, Chehayeb, R, Zheng, Y, Sun, Y, Cui, H, Fan, Z, Han, X, Jiang, X, Tang, Q, Zhou, J, Zheng, Z, Zhang, X, Zhang, N, Zhang, Y, Shen, A, Yu, J, Ye, J, Yao, Y, Yan, J, Xu, X, Wang, Z, Ma, J, Li, Y, Li, S, Lu, S, Kong, X, Song, Y, Yang, G, Yao, Z, Pan, Y, Guo, X, Sun, Z, Dong, Y, Zhu, J, Peng, D, Yuan, Z, Lin, J, Yin, Y, Jerabek, O, Burianova, H, Fiala, T, Hubac, J, Ludka, O, Monhart, Z, Vodnansky, P, Zeman, K, Foldyna, D, Krupicka, J, Podpera, I, Busak, L, Radvan, M, Vomacka, Z, Prosecky, R, Cifkova, R, Durdil, V, Vesely, J, Vaclavik, J, Cervinka, P, Linhart, A, Brabec, T, Miklik, R, Bourhaial, H, Olbrich, H-G, Genth-Zotz, S, Kemala, E, Lemke, B, Böhm, M, Schellong, S, Rieker, W, Heitzer, T, Ince, H, Faghih, M, Birkenfeld, A, Begemann, A, Ghanem, A, Ujeyl, A, von Haehling, S, Dorsel, T, Bauersachs, J, Prull, M, Weidemann, F, Darius, H, Nickenig, G, Wilke, A, Sauter, J, Rauch-Kroehnert, U, Frey, N, Schulze, CP, König, W, Maier, L, Menzel, F, Proskynitopoulos, N, Ebert, H-H, Sarnighausen, H-E, Düngen, H-D, Licka, M, Stellbrink, C, Winkelmann, B, Menck, N, López-Sendón, JL, de la Fuente Galán, L, Delgado Jiménez, JF, Manito Lorite, N, Pérez de Juan Romero, M, Galve Basilio, E, Cereto Castro, F, González Juanatey, JR, Gómez, JJ, Sanmartín Fernández, M, Garcia-Moll Marimon, X, Pascual Figal, D, Bover Freire, R, Bonnefoy Cudraz, E, Jobbe Duval, A, Tomasevic, D, Habib, G, Isnard, R, Picard, F, Khanoyan, P, Dubois-Rande, J-L, Galinier, M, Roubille, F, Alexandre, J, Babuty, D, Delarche, N, Berneau, J-B, Girerd, N, Saxena, M, Rosano, G, Yousef, Z, Clifford, C, Arden, C, Bakhai, A, Boos, C, Jenkins, G, Travill, C, Price, D, Koenyves, L, Lakatos, F, Matoltsy, A, Noori, E, Zilahi, Z, Andrassy, P, Kancz, S, Simon, G, Sydo, T, Vorobcsuk, A, Kiss, RG, Toth, K, Szakal, I, Nagy, L, Barany, T, Nagy, A, Szolnoki, E, Chopra, VK, Mandal, S, Rastogi, V, Shah, B, Mullasari, A, Shankar, J, Mehta, V, Oomman, A, Kaul, U, Komarlu, S, Kahali, D, Bhagwat, A, Vijan, V, Ghaisas, NK, Mehta, A, Kashyap, J, Kothari, Y, TaddeI, S, Scherillo, M, Zacà, V, Genovese, S, Salvioni, A, Fucili, A, Fedele, F, Cosmi, F, Volpe, M, Mazzone, C, Esposito, G, Doi, M, Yamamoto, H, Sakagami, S, Oishi, S, Yasaka, Y, Tsuboi, H, Fujino, Y, Matsuoka, S, Watanabe, Y, Himi, T, Ide, T, Ichikawa, M, Kijima, Y, Koga, T, Yuda, S, Fukui, K, Kubota, T, Manita, M, Fujinaga, H, Matsumura, T, Fukumoto, Y, Kato, R, Kawai, Y, Hiasa, G, Kazatani, Y, Mori, M, Ogimoto, A, Inoko, M, Oguri, M, Kinoshita, M, Okuhara, K, Watanabe, N, Ono, Y, Otomo, K, Sato, Y, Matsunaga, T, Takaishi, A, Miyagi, N, Uehara, H, Takaishi, H, Urata, H, Kataoka, T, Matsubara, H, Matsumoto, T, Suzuki, T, Takahashi, N, Imamaki, M, Yoshitama, T, Saito, T, Sekino, H, Furutani, Y, Koda, M, Shinozaki, T, Hirabayashi, K, Tsunoda, R, Yonezawa, K, Hori, H, Yagi, M, Arikawa, M, Hashizume, T, Ishiki, R, Koizumi, T, Nakayama, K, Taguchi, S, Nanasato, M, Yoshida, Y, Tsujiyama, S, Nakamura, T, Oku, K, Shimizu, M, Suwa, M, Momiyama, Y, Sugiyama, H, Kobayashi, K, Inoue, S, Kadokami, T, Maeno, K, Kawamitsu, K, Maruyama, Y, Nakata, A, Shibata, T, Wada, A, Cho, H-J, Na, JO, Yoo, B-S, Choi, J-O, Hong, SK, Shin, J-H, Cho, M-C, Han, SH, Jeong, J-O, Kim, J-J, Kang, SM, Kim, D-S, Kim, MH, Llamas Esperon, G, Illescas Díaz, J, Fajardo Campos, P, Almeida Alvarado, J, Bazzoni Ruiz, A, Echeverri Rico, J, Lopez Alcocer, I, Valle Molina, L, Hernandez Herrera, C, Calvo Vargas, C, Padilla Padilla, FG, Rodriguez Briones, I, Chuquiure Valenzuela, EJJR, Aguilera Real, ME, Carrillo Calvillo, J, Alpizar Salazar, M, Cervantes Escárcega, JL, Velasco Sanchez, R, Al - Windy, N, van Heerebeek, L, Bellersen, L, Brunner-La Rocca, H-P, Post, J, Linssen, GCM, van de Wetering, M, Peters, R, van Stralen, R, Groutars, R, Smits, P, Yilmaz, A, Kok, WEM, Van der Meer, P, Dijkmans, P, Troquay, R, van Alem, AP, Van de Wal, R, Handoko, L, Westendorp, ICD, van Bergen, PFMM, Rensing, BJWM, Hoogslag, P, Kietselaer, B, Kragten, JA, den Hartog, FR, Alings, A, Danilowicz-Szymanowicz, L, Raczak, G, Piesiewicz, W, Zmuda, W, Kus, W, Podolec, P, Musial, W, Drelich, G, Kania, G, Miekus, P, Mazur, S, Janik, A, Spyra, J, Peruga, J, Balsam, P, Krakowiak, B, Szachniewicz, J, Ginel, M, Grzybowski, J, Chrustowski, W, Wojewoda, P, Kalinka, A, Zurakowski, A, Koc, R, Debinski, M, Fil, W, Kujawiak, M, Forys, J, Kasprzak, M, Krol, M, Michalski, P, Mirek-Bryniarska, E, Radwan, K, Skonieczny, G, Stania, K, Skoczylas, G, Madej, A, Jurowiecki, J, Firek, B, Wozakowska-Kaplon, B, Cymerman, K, Neutel, J, Adams, K, Balfour, P, Deswal, A, Djamson, A, Duncan, P, Hong, M, Murray, C, Rinde-Hoffman, D, Woodhouse, S, MacNevin, R, Rama, B, Broome-Webster, C, Kindsvater, S, Abramov, D, Barettella, M, Pinney, S, Herre, J, Cohen, A, Vora, K, Challappa, K, West, S, Baum, S, Cox, J, Jani, S, Karim, A, Akhtar, A, Quintana, O, Paukman, L, Goldberg, R, Bhatti, Z, Budoff, M, Bush, E, Potler, A, Delgado, R, Ellis, B, Dy, J, Fialkow, J, Sangrigoli, R, Ferdinand, K, East, C, Falkowski, S, Donahoe, S, Ebrahimi, R, Kline, G, Harris, B, Khouzam, R, Jaffrani, N, Jarmukli, N, Kazemi, N, Koren, M, Friedman, K, Herzog, W, Silva Enciso, J, Cheung, D, Grover-McKay, M, Hauptman, P, Mikhalkova, D, Hegde, V, Hodsden, J, Khouri, S, McGrew, F, Littlefield, R, Bradley, P, McLaurin, B, Lupovitch, S, Labin, I, Rao, V, Leithe, M, Lesko, M, Lewis, N, Lombardo, D, Mahal, S, Malhotra, V, Dauber, I, Banerjee, A, Needell, J, Miller, G, Paladino, L, Munuswamy, K, Nanna, M, McMillan, E, Mumma, M, Napoli, M, Nelson, W, O'Brien, T, Adlakha, A, Onwuanyi, A, Serota, H, Schmedtje, J, Paraschos, A, Potu, R, Sai-Sudhakar, C, Saltzberg, M, Sauer, A, Shah, P, Skopicki, H, Bui, H, Carr, K, Stevens, G, Tahirkheli, N, Tallaj, J, Yousuf, K, Trichon, B, Welker, J, Tolerico, P, Vest, A, Vivo, R, Wang, X, Abadier, R, Dunlap, S, Weintraub, N, Malik, A, Kotha, P, Zaha, V, Kim, G, Uriel, N, Greene, T, Salacata, A, Arora, R, Gazmuri, R, Kobayashi, J, Iteld, B, Vijayakrishnan, R, Dab, R, Mirza, Z, Marques, V, Nallasivan, M, Bensimhon, D, Peart, B, Saint-Jacques, H, Barringhaus, K, Contreras, J, Gupta, A, Koneru, S, Nguyen, V, Verma, Subodh, Dhingra, Nitish K, Butler, Javed, Anker, Stefan D, Ferreira, Joao Pedro, Filippatos, Gerasimos, Januzzi, James L, Lam, Carolyn S P, Sattar, Naveed, Peil, Barbara, Nordaby, Matias, Brueckmann, Martina, Pocock, Stuart J, Zannad, Faiez, and Packer, Milton

Published
2022
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9. Recent progress and future prospects of hyperon nucleon scattering experiment

Author

Miwa Koji, Nanamura Takuya, Sakao Tamao, Ahn J. K., Akazawa Y., Aramaki T., Ashikaga S., Callier S., Chiga N., Choi S. W., Ekawa H., Evtoukhovitch P., Fujioka N., Fujita M., Gogami T., Harada T., Hasegawa S., Hayakawa S. H., Honda R., Hoshino S., Hosomi K., Ichikawa M., Ichikawa Y., Ieiri M., Ikedai M., Imai K., Ishikawa Y., Ishimoto S., Jung W. S., Kajikawa S., Kanauchi H., Kanda H., Kitaoka T., Kang B. M., Kawai H., Kim S. H., Kobayashi K., Koike T., Matsuda K., Matsumoto Y., Nagao S., Nagatomi R., Nakada Y., Nakagawa M., Nakamura I., Naruki M., Ozawa S., Raux L., Rogers T. G., Sakaguchi A., Sako H., Sato S., Shiozaki T., Shirotori K., Suzuki K. N., Suzuki S., Tabata M., Taille C. d. L., Takahashi H., Takahashi T., Takahashi T. N., Tamura H., Tanaka M., Tanida K., Tsamalaidze Z., Ukai M., Umetsu H., Wada S., Yamamoto T. O., Yoshida J., and Yoshimura K.

Subjects
Physics, QC1-999
Abstract

A new hyperon-proton scattering experiment, dubbed J-PARC E40, was performed to measure differential cross sections of the Σ+p, Σ−p elastic scatterings and the Σ−p → Λn scattering by identifying a lot of Σ particles in the momentum ranging from 0.4 to 0.8 GeV/c produced by the π±p → K+Σ± reactions. We successfully measured the differential cross sections of these three channels with a drastically improved accuracy with a fine angular step. These new data will become important experimental constraints to improve the theories of the two-body baryon-baryon interactions. Following this success, we proposed a new experiment to measure the differential cross sections and spin observables by using a highly polarized Λ beam for providing quantitative information on the ΛN interaction. The results of three Σp channels and future prospects of the Λp scattering experiment are described.

Published
2022
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16. Molecular identification of Fasciola spp. (Digenea: Platyhelminthes) in cattle from Vietnam

Author

Nguyen S., Amer S., Ichikawa M., Itagaki T., Fukuda Y., and Nakai Y.

Subjects
Fasciola gigantica, Fasciola hepatica, hybridization, parthenogenesis, ITS, COI, NDI, Vietnam, Infectious and parasitic diseases, RC109-216
Abstract

Fasciola spp. were collected from naturally infected cattle at a local abattoir of Khanh Hoa province, Vietnam, for morphological and genetic investigations. Microscopic examination detected no sperm cells in the seminal vesicles, suggesting a parthenogenetic reproduction of the flukes. Analyses of sequences from the first and second internal transcribed spacers (ITS1 and ITS2) of the ribosomal RNA revealed that 13 out of 16 isolates were of Fasciola gigantica type, whereas three isolates presented a hybrid sequence from F. gigantica and Fasciola hepatica. Interestingly, all the mitochondrial sequences (partial COI and NDI) were of F. gigantica type, suggesting that the maternal lineage of the hybrid form is from F. gigantica. No intra-sequence variation was detected.

Published
2012
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17. The performance of magnetic lens for focusing VCN-SANS

Author

Yamada, M., Iwashita, Y., Kanaya, T., Ichikawa, M., Tongu, H., Kennedy, S.J., Shimizu, H.M., Mishima, K., Yamada, N.L., Hirota, K., Carpenter, J.M., Lal, J., Andersen, K., Geltenbort, P., Guerard, B., Manzin, G., Hino, M., Kitaguchi, M., and Bleuel, M.

Published
2011
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21. Ξ − atomic X-ray spectroscopy using a counter-emulsion hybrid method.

Author

Fujita, M, Ekawa, H, Endo, Y, Goto, R, Hasegawa, S, Hayakawa, S H, Hayashi, K, Honda, R, Hoshino, K, Hosomi, K, Ichikawa, M, Ichikawa, Y, Ito, H, Ishikawa, Y, Jung, W S, Kasagi, A, Kim, S H, Kinbara, S, Kobayashi, H, and Koike, T

Subjects
ATOMIC spectroscopy, GERMANIUM detectors, ELECTROMAGNETIC interactions, X-rays, EMULSIONS, HYPERFRAGMENTS
Abstract

Ξ− atomic X-ray spectroscopy is one of the most useful methods for investigation of the Ξ–nucleus strong interaction. Since the X-ray energy is shifted and/or broadened due to the Ξ–nucleus strong interaction compared to those calculated from electromagnetic interaction alone, the measurement of the energy shift, Δ E , and the width, Γ, give us information on the Ξ–nucleus potential. A serious problem in the measurement is the significant background derived from in-flight Ξ− decay. A novel method of identifying stopped Ξ− events using the nuclear emulsion was developed to realize the first Ξ− atomic X-ray spectroscopy experiment as the J-PARC E07 experiment, which also aimed at searching for ΛΛ and Ξ− hypernuclei in the emulsion. The X-rays emitted from Ξ− Br and Ξ− Ag atoms were measured using germanium detectors. No clear peaks were observed in the obtained spectra. However, we succeeded in reducing the background to 1/170 by this method employing coincidence measurements using nuclear emulsion and X-ray detectors. [ABSTRACT FROM AUTHOR]

Published
2022
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23. Towards the Measurement of the Mass Modifications of Vector Mesons in a Finite Density Matter.

Author

OZAWA, K., AOKI, K., ARIMIZU, D., ASHIKAGA, S., CHANG, W.-C., CHUJO, T., EBATA, K., EN'YO, H., ESUMI, S., HAMAGAKI, H., HONDA, R., ICHIKAWA, M., KAJIKAWA, S., KANNO, K., KIMURA, Y., KIYOMICHI, A., KONDO, T. K., KYAN, S., LIN, C.-H., and LIN, C.-S.

Subjects
VECTOR mesons, FINITE nuclei, PROTON beams, MASS measurement, QUANTUM chromodynamics, MASS spectrometry
Abstract

An experiment is being carried out at J-PARC -- Japan Proton Accelerator Research Complex -- to study the origin of hadron mass and the partial restoration of chiral symmetry of quantum chromodynamics in a finite density matter. The experiment, which is called the J-PARC E16 experiment, aims to measure the mass spectra of vector mesons in nuclei due to finite density effects. Previous measurements were performed at KEK-PS proton synchrotron and showed mass modifications of vector mesons in nuclei. A new experiment aims to confirm the results of KEK-PS with larger statistics to have a detailed study. Mass spectra of vector mesons are measured using electron--positron decays in proton-nucleus reactions. A new beam line is built to provide a high-intensity proton beam for the experiment, and decayed electrons and positrons are detected and identified by a newly constructed spectrometer. The experiment started the acquisition of pilot data to evaluate the performances of the beam line and the spectrometer in 2020 and 2021. The spectrometer worked well, and physics data taking will start in 2023. [ABSTRACT FROM AUTHOR]

Published
2022
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24. Continuous partially hydrolyzed guar gum intake reduces cold-like symptoms: a randomized, placebo-controlled, double-blinded trial in healthy adults.

Author

SAKAI, S., KAMADA, Y., TAKANO, H., ICHIKAWA, M., KURIMOTO, M., KATSUYAMA, H. K., NISHIHIRA, J., and SASAKI, M.

Abstract

OBJECTIVE: Partially hydrolyzed guar gum (PHGG), a water-soluble dietary fiber produced by the controlled partial enzymatic hydrolysis of guar gum beans, has various physiological roles. PHGG is expected to influence the immune function and prevent infections. The objective of this study was to examine the effect of continuous ingestion of PHGG for 12 weeks on the development of cold-like symptoms. PATIENTS AND METHODS: A placebo-controlled, double blind, randomized, parallel-group comparative study was conducted. 96 healthy Japanese adults received 5.2 g PHGG or placebo daily for 12 weeks. Cold-like symptoms were assessed based on patient diary, and the levels of short-chain fatty acids (SCFAs) in stool and blood immune markers at baseline and at weeks 6 and 12. RESULTS: The cumulative number of "no symptoms" days for all symptoms was significantly larger in the PHGG than in the placebo group. The result of the analysis by severity of cold-like symptoms also showed significant differences, with the PHGG group having a lower severity of cold-like symptoms. Propionic acid at weeks 6 and 12 and n-butyric acid and total SCFAs at week 12 were significantly higher in the PHGG than in the placebo group. The Interferon-γ level was significantly lower at week 6 in the PHGG than in the placebo group. CONCLUSIONS: PHGG intake may affect immune function and suppress cold-like symptoms through the production of SCFAs in healthy adults. [ABSTRACT FROM AUTHOR]

Published
2022

33. Practical applications of permanent magnet multipoles

Author

Iwashita, Y., Ichikawa, M., Yamada, M., Sugimoto, T., Tongu, H., Fujisawa, H., Masuzawa, M., Tauchi, T., Oku, T., Hirota, K., Shimizu, H.M., Caitu Shi, and Zhu, Y.

Subjects
Magnetization -- Analysis, Magnetooptics -- Analysis, Neutron beams -- Research, Magnets, Permanent -- Usage, Business, Electronics, Electronics and electrical industries
Published
2010

35. Multiple Phenotypes in Phosphoglucomutase 1 Deficiency

Author

Tegtmeyer, L. C., Rust, S., van Scherpenzeel, M., Ng, B. G., Losfeld, M.-E., Timal, S., Raymond, K., He, P., Ichikawa, M., Veltman, J., Huijben, K., Shin, Y. S., Sharma, V., Adamowicz, M., Lammens, M., Reunert, J., Witten, A., Schrapers, E., Matthijs, G., Jaeken, J., Rymen, D., Stojkovic, T., Laforêt, P., Petit, F., Aumaître, O., Czarnowska, E., Piraud, M., Podskarbi, T., Stanley, C. A., Matalon, R., Burda, P., Seyyedi, S., Debus, V., Socha, P., Sykut-Cegielska, J., van Spronsen, F., de Meirleir, L., Vajro, P., DeClue, T., Ficicioglu, C., Wada, Y., Wevers, R. A., Vanderschaeghe, D., Callewaert, N., Fingerhut, R., van Schaftingen, E., Freeze, H. H., Morava, E., Lefeber, D. J., and Marquardt, T.

Published
2014
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38. Study of beamlets extracted from a multi-aperture and five-stage acceleration system.

Author

Kashiwagi, M., Kisaki, M., Saquilayan, G. Q., Kojima, A., Hiratsuka, J., Ichikawa, M., Shimabukuro, Y., Murayama, M., and Tobari, H.

Subjects
BEAM optics, ION beams, SPACE charge, ANIONS, HEATING load, MAGNETIC fields
Abstract

A beam optics study using the ITER-relevant high intense negative ion beams, such as 1 MeV, 200 A/m2, has been performed experimentally and analytically using a multi-aperture and five-stage accelerator. Initially, multi-beamlets generated from this accelerator were deflected in various directions due to the magnetic field and space charge repulsion between beams and showed various divergences. These had limited the pulse length and the beam energy. Compensation methods of the beamlet deflections have worked effectively and contributed to achieving the ITER requirement, the divergence angle of <7 mrad, and the deflection angle of <1 mrad for 1 MeV beam. The beam pulse has been gradually extended from 1 to 100 s and is now going to a longer pulse based on these results. One of the remaining issues is to understand and suppress peripheral components of the beam, namely, the halo, and to reduce the local heat loads observed around the aperture edge. This halo component has been successfully distinguished from the beam core by using a newly developed beam emittance measurement system for high intense beams. By combining this measured beam emittance and the beam simulation, it was clarified for the first time that the halo components are generated in an area of 1 mm width from the aperture edge. [ABSTRACT FROM AUTHOR]

Published
2022
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39. Strong variable permanent multipole magnets

Author

Iwashita, Y., Ichikawa, M., Tajima, Y., Nakamura, S., Kumada, M., Spencer, C.M., Tauchi, Kuroda, Okugi, T., Ino, T., Muto, S., and Shimizu, H.M.

Subjects
Particle beams -- Usage, Magnets, Permanent -- Evaluation, Superconducting magnets -- Evaluation, Business, Electronics, Electronics and electrical industries
Abstract

Permanent multipole magets, such as quadrupole, sextupole and octupole are examined. The high order multipoles made from permanent magnets have achieved higher strengths, for a given bore radius, than the superconducting magnets.

Published
2008

41. Experimental results of a 500 m HTS power cable field test

Author

Mukoyama, S., Yagi, M., Ichikawa, M., Torii, S., Takahashi, T., Suzuki, H., and Yasuda, K.

Subjects
High temperature superconductors -- Electric properties, High temperature superconductors -- Testing, Shielding (Electricity) -- Management, Electrical cables -- Electric properties, Company business management, Business, Electronics, Electronics and electrical industries
Abstract

The test results of a 500 m High Temperature Superconducting (HTS) power cable are discussed. Results suggest the observation of local degradation in the HTS shield due to less thickness of the protective layer.

Published
2007

42. Short circuit test of HTS power cable

Author

Torii, S., Kado, H., Ichikawa, M., Suzuki, H., Yagi, M., and Mukoyama, S.

Subjects
High temperature superconductors -- Design and construction, High temperature superconductors -- Testing, Electrical cables -- Electric properties, Electrical cables -- Testing, Electric circuit analysis, Business, Electronics, Electronics and electrical industries
Abstract

The short circuit testing of High Temperature Superconducting (HTS) power cable is discussed. Results suggest non-variation of critical current before and after each fault.

Published
2007

43. Quench properties of 500-m HTS power cable

Author

Ichikawa, M., Torii, S., Takahashi, T., Suzuki, H., Mukoyama, S., and Yagi, M.

Subjects
Electrical cables -- Electric properties, High temperature superconductors -- Electric properties, Electric fields -- Measurement, Business, Electronics, Electronics and electrical industries
Abstract

The quench properties of a 500-m High Temperature Superconducting (HTS) power cable are discussed. Findings reveal the correlation of the quench propagation with the phase difference of the conductor current and the leakage field.

Published
2007

46. Properties of Bi-2223 thick films on a MgO substrate prepared by a coating method

Author

Ichikawa, M., Kado, H., Shibuya, M., Kojima, M., Kawahara, M., and Matsumura, T.

Subjects
Dielectric films -- Analysis, Thin films -- Analysis, Superconductors -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Reporting the results of experimental study of Bi-2223 thick films on a MgO substrate prepared by a coating method and CIP technique is discussed. It is found that the J(sub c) and T(sub c) of the prepared thick film depend on its thickness and the compositional deviation is caused by volatilization of Pb during sintering process.

Published
2003

47. Inductive type fault current limiter with Bi-2223 thick film on a MgO cylinder

Author

Ichikawa, M., Kado, H., Shibuya, M., and Matsumura, T.

Subjects
Superconductive devices -- Research, Superconductors -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Research involving fault current limiters for electric power systems is described and discussed.

Published
2003

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