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1. Superconducting Magnet Technology for the IR Upgrade

Author

Todesco, E., primary, Ambrosio, G., additional, Ferracin, P., additional, Sabbi, G. L., additional, Nakamoto, T., additional, Sugano, M., additional, Van Weelderen, R., additional, Fabbricatore, P., additional, Farinon, S., additional, Toral, F., additional, Sorbi, M., additional, Statera, M., additional, Xu, Q., additional, Rifflet, J. M., additional, and Felice, H., additional

Published
2024
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2. J-PARC Neutrino Beamline Upgrade Technical Design Report

Author

Abe, K., Aihara, H., Ajmi, A., Alt, C., Andreopoulos, C., Antonova, M., Aoki, S., Asada, Y., Ashida, Y., Atherton, A., Atkin, E., Ban, S., Barbato, F. C. T., Barbi, M., Barker, G. J., Barr, G., Batkiewicz, M., Beloshapkin, A., Berardi, V., Berns, L., Bhadra, S., Bian, J., Bienstock, S., Blondel, A., Bolognesi, S., Borg, J., Bourguille, B., Boyd, S. B., Brailsford, D., Bravar, A., Bron, S., Bronner, C., Avanzini, M. Buizza, Calabria, N. F., Calcutt, J., Calland, R. G., Calvet, D., Campbell, T., Cao, S., Cartwright, S. L., Catanesi, M. G., Cervera, A., Chappell, A., Cherdack, D., Chikuma, N., Christodoulou, G., Cicerchia, M., Clifton, A., Cogo, G., Coleman, J., Collazuol, G., Coplowe, D., Cudd, A., Dabrowska, A., Delbart, A., De Roeck, A., De Rosa, G., Dealtry, T., Dell'acqua, A., Denner, P. F., Dennis, S. R., Densham, C., Dewhurst, D., Di Lodovico, F., Dolan, S., Dokania, N., Doqua, D., Drapier, O., Duffy, K. E., Dumarchez, J., Dunne, P. J., Dziewiecki, M., Eklund, L., Emery-Schrenk, S., Fedotov, S., Fernandez, P., Feusels, T., Finch, A. J., Fiorentini, G. A., Fiorillo, G., Fitton, M., Friend, M., Fujii, Y., Fujita, R., Fukuda, D., Fukuda, R., Fukuda, Y., Fusshoeller, K., Gendotti, A., Giganti, C., Gizzarelli, F., Gonin, M., Gorin, A., Gramegna, F., Guigue, M., Hadley, D. R., Haigh, J. T., Hallsjö, S. -P., Hamacher-Baumann, P., Hansen, D., Harada, J., Hartz, M., Hasegawa, T., Hastings, N. C., Hayato, Y., Hiramoto, A., Hogan, M., Holeczek, J., Iacob, F., Ichikawa, A. K., Ikeda, M., Imber, J., Ishida, T., Ishii, T., Ishitsuka, M., Iwai, E., Iwamoto, K., Izmaylov, A., Jamieson, B., Jiang, M., Johnson, S., Jonsson, P., Jung, C. K., Kabirnezhad, M., Kaboth, A. C., Kajita, T., Kakuno, H., Kameda, J., Kasetti, S., Kataoka, Y., Katori, T., Kearns, E., Khabibullin, M., Khotjantsev, A., Kikawa, T., Kim, H., King, S., Kisiel, J., Knight, A., Knox, A., Kobayashi, T., Koch, L., Konaka, A., Kormos, L. L., Korzenev, A., Koshio, Y., Kowalik, K., Kropp, W., Kudenko, Y., Kuribayashi, S., Kurjata, R., Kutter, T., Kuze, M., Labarga, L., Lagoda, J., Lamont, I., Lamoureux, M., Last, D., Laveder, M., Lawe, M., Lindner, T., Liptak, Z. J., Litchfield, R. P., Liu, S., Long, K. R., Longhin, A., Lopez, J. P., Ludovici, L., Lu, X., Lux, T., Magaletti, L., Magro, L., Mahn, K., Malek, M., Manly, S., Marchi, T., Maret, L., Marino, A. D., Martin, J. F., Martynenko, S., Maruyama, T., Matsubara, T., Matsushita, K., Matveev, V., Mauger, C., Mavrokoridis, K., Mazzucato, E., McCarthy, M., McCauley, N., McFarland, K. S., McGrew, C., Mefodiev, A., Metelko, C., Mezzetto, M., Mijakowski, P., Mijakowski, J., Minamino, A., Mineev, O., Mine, S., Missert, A., Miura, M., Bueno, L. Molina, Moriyama, S., Morrison, J., Mueller, Th. A., Murphy, S., Nagai, Y., Nakadaira, T., Nakahata, M., Nakajima, Y., Nakamura, A., Nakamura, K. G., Nakamura, K., Nakayama, S., Nakaya, T., Nakayoshi, K., Nantais, C., Ngoc, T. V., Nishikawa, K., Nishimura, Y., Nonnenmacher, T., Nova, F., Novella, P., Nowak, J., Nugent, J. C., O'Keeffe, H. M., Odagawa, T., Ohta, R., Okamoto, K., Okumura, K., Okusawa, T., Ovsyannikova, T., Owen, R. A., Oyama, Y., Palladino, V., Paolone, V., Pari, M., Parker, W., Parsa, S., Pasternak, J., Pastore, C., Pavin, M., Payne, D., Perkin, J. D., Pickard, L., Pickering, L., Guerra, E. S. Pinzon, Popov, B., Posiadala-Zezula, M., Poutissou, J. -M., Poutissou, R., Pozimski, J., Przewlocki, P., Przybilsk, H., Quilain, B., Radermacher, T., Radicioni, E., Radics, B., Ratoff, P. N., Reinherz-Aronis, E., Riccio, C., Rojas, P., Rondio, E., Rossi, B., Roth, S., Rubbia, A., Ruggeri, A. C., Ruggles, C. A., Rychter, A., Sakashita, K., Sánchez, F., Schloesser, C. M., Scholberg, K., Schwehr, J., Scott, M., Seiya, Y., Sekiguchi, T., Sekiya, H., Sgalaberna, D., Shaikina, A., Shah, R., Shaikhiev, A., Shaker, F., Shaw, D., Shiozawa, M., Shirahige, T., Shorrock, W., Smirnov, A., Smy, M., Sobczyk, J. T., Sobel, H., Soler, F. J. P., Southwell, L., Spina, R., Steinmann, J., Stewart, T., Stowell, P., Suvorov, S., Suzuki, A., Suzuki, S. Y., Suzuki, Y., Swierblewski, J., Szeptycka, M., Szoldos, S., Sztuc, A., Tacik, R., Tada, M., Tajima, M., Takeda, A., Takeuchi, Y., Tanaka, H. K., Tanaka, H. A., Thompson, L. F., Toki, W., Tomura, T., Touramanis, C., Tsui, K., Tsukamoto, T., Tzanov, M., Uchida, M. A., Uchida, Y., Vagins, M., Van, N. H., Vasseur, G., Viant, T., Vilela, C., Wachala, T., Walter, C. W., Wang, Y., Wark, D., Wascko, M. O., Weber, A., Wendell, R., Wilkes, R. J., Wilking, M. J., Wilson, J. R., Wilson, R. J., Wood, K., Wret, C., Yamada, Y., Yamamoto, K., Yanagisawa, C., Yang, G., Yano, T., Yasutome, K., Yen, S., Yershov, N., Yokoyama, M., Yoshida, T., Yuan, T., Yu, M., Zalewska, A., Zalipska, J., Zambelli, L., Zaremba, K., Ziembicki, M., Zimmerman, E. D., Zito, M., Hamada, E., Higashi, N., Hirose, E., Igarashi, Y., Iida, M., Iio, M., Ikeno, M., Kimura, N., Kurosawa, N., Makida, Y., Nakamoto, T., Ogitsu, T., Ohhata, H., Okada, R., Okamura, T., Onaka, M., Sasaki, K., Shimazaki, S., Shoji, M., Sugano, M., Tanaka, K., Tanaka, M., Terashima, A., Tomaru, T., Uchida, T., and Yoshida, M.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

In this document, technical details of the upgrade plan of the J-PARC neutrino beamline for the extension of the T2K experiment are described. T2K has proposed to accumulate data corresponding to $2\times{}10^{22}$ protons-on-target in the next decade, aiming at an initial observation of CP violation with $3\sigma$ or higher significance in the case of maximal CP violation. Methods to increase the neutrino beam intensity, which are necessary to achieve the proposed data increase, are described.

Published
2019

3. COMET Phase-I Technical Design Report

Author

The COMET Collaboration, Abramishvili, R., Adamov, G., Akhmetshin, R. R., Allin, A., Angélique, J. C., Anishchik, V., Aoki, M., Aznabayev, D., Bagaturia, I., Ban, G., Ban, Y., Bauer, D., Baygarashev, D., Bondar, A. E., Cârloganu, C., Carniol, B., Chau, T. T., Chen, J. K., Chen, S. J., Cheung, Y. E., da Silva, W., Dauncey, P. D., Densham, C., Devidze, G., Dornan, P., Drutskoy, A., Duginov, V., Eguchi, Y., Epshteyn, L. B., Evtoukhovich, P., Fayer, S., Fedotovich, G. V., Finger Jr, M., Finger, M., Fujii, Y., Fukao, Y., Gabriel, J. L., Gay, P., Gillies, E., Grigoriev, D. N., Gritsay, K., Hai, V. H., Hamada, E., Hashim, I. H., Hashimoto, S., Hayashi, O., Hayashi, T., Hiasa, T., Ibrahim, Z. A., Igarashi, Y., Ignatov, F. V., Iio, M., Ishibashi, K., Issadykov, A., Itahashi, T., Jansen, A., Jiang, X. S., Jonsson, P., Kachelhoffer, T., Kalinnikov, V., Kaneva, E., Kapusta, F., Katayama, H., Kawagoe, K., Kawashima, R., Kazak, N., Kazanin, V. F., Kemularia, O., Khvedelidze, A., Koike, M., Kormoll, T., Kozlov, G. A., Kozyrev, A. N., Kravchenko, M., Krikler, B., Kumsiashvili, G., Kuno, Y., Kuriyama, Y., Kurochkin, Y., Kurup, A., Lagrange, B., Lai, J., Lee, M. J., Li, H. B., Litchfield, R. P., Li, W. G., Loan, T., Lomidze, D., Lomidze, I., Loveridge, P., Macharashvili, G., Makida, Y., Mao, Y. J., Markin, O., Matsuda, Y., Melkadze, A., Melnik, A., Mibe, T., Mihara, S., Miyamoto, N., Miyazaki, Y., Idris, F. Mohamad, Azmi, K. A. Mohamed Kamal, Moiseenko, A., Moritsu, M., Mori, Y., Motoishi, T., Nakai, H., Nakai, Y., Nakamoto, T., Nakamura, Y., Nakatsugawa, Y., Nakazawa, Y., Nash, J., Natori, H., Niess, V., Nioradze, M., Nishiguchi, H., Noguchi, K., Numao, T., O'Dell, J., Ogitsu, T., Ohta, S., Oishi, K., Okamoto, K., Okamura, T., Okinaka, K., Omori, C., Ota, T., Pasternak, J., Paulau, A., Picters, D., Ponariadov, V., Quémener, G., Ruban, A. A., Rusinov, V., Sabirov, B., Sakamoto, H., Sarin, P., Sasaki, K., Sato, A., Sato, J., Semertzidis, Y. K., Shigyo, N., Shoukavy, Dz., Slunecka, M., Stöckinger, D., Sugano, M., Tachimoto, T., Takayanagi, T., Tanaka, M., Tang, J., Tao, C. V., Teixeira, A. M., Tevzadze, Y., Thanh, T., Tojo, J., Tolmachev, S. S., Tomasek, M., Tomizawa, M., Toriashvili, T., Trang, H., Trekov, I., Tsamalaidze, Z., Tsverava, N., Uchida, T., Uchida, Y., Ueno, K., Velicheva, E., Volkov, A., Vrba, V., Abdullah, W. A. T. Wan, Warin-Charpentier, P., Wong, M. L., Wong, T. S., Wu, C., Xing, T. Y., Yamaguchi, H., Yamamoto, A., Yamanaka, M., Yamane, T., Yang, Y., Yano, T., Yao, W. C., Yeo, B., Yoshida, H., Yoshida, M., Yoshioka, T., Yuan, Y., Yudin, Yu. V., Zdorovets, M. V., Zhang, J., Zhang, Y., and Zuber, K.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

The Technical Design for the COMET Phase-I experiment is presented in this paper. COMET is an experiment at J-PARC, Japan, which will search for neutrinoless conversion of muons into electrons in the field of an aluminium nucleus ($\mu-e$ conversion, $\mu^- N \to e^- N$); a lepton flavor violating process. The experimental sensitivity goal for this process in the Phase-I experiment is $3.1\times10^{-15}$, or 90 % upper limit of branching ratio of $7\times 10^{-15}$, which is a factor of 100 improvement over the existing limit. The expected number of background events is 0.032. To achieve the target sensitivity and background level, the 3.2 kW 8 GeV proton beam from J-PARC will be used. Two types of detectors, CyDet and StrECAL, will be used for detecting the \mue conversion events, and for measuring the beam-related background events in view of the Phase-II experiment, respectively. Results from simulation on signal and background estimations are also described., Comment: A minor correction applied in Eq. 3

Published
2018
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4. Insertion Magnets

Author

Ambrosio, G., Anerella, M., Bossert, R., Cheng, D., Chlachidze, G., Dietderich, D., Ramos, D Duarte, Fabbricatore, P., Farinon, S., Felice, H., Ferracin, P., Fessia, P., Matos, J. Garcia, Ghosh, A., Hagen, P., Bermudez, S. Izquierdo, Juchno, M., Krave, S., Marchevsky, M., Nakamoto, T., Ogitsu, T., Perez, J. C., Prin, H., Rifflet, J. M., Sabbi, G. L., Sasaki, K., Schmalzle, J., Segreti, M., Sugano, M., Todesco, E., Toral, F., Volpini, G., Wanderer, P., Wang, X., Weelderen, R. V., Xu, Q., and Yu, M.

Subjects
Physics - Accelerator Physics
Abstract

Chapter 3 in High-Luminosity Large Hadron Collider (HL-LHC) : Preliminary Design Report. The Large Hadron Collider (LHC) is one of the largest scientific instruments ever built. Since opening up a new energy frontier for exploration in 2010, it has gathered a global user community of about 7,000 scientists working in fundamental particle physics and the physics of hadronic matter at extreme temperature and density. To sustain and extend its discovery potential, the LHC will need a major upgrade in the 2020s. This will increase its luminosity (rate of collisions) by a factor of five beyond the original design value and the integrated luminosity (total collisions created) by a factor ten. The LHC is already a highly complex and exquisitely optimised machine so this upgrade must be carefully conceived and will require about ten years to implement. The new configuration, known as High Luminosity LHC (HL-LHC), will rely on a number of key innovations that push accelerator technology beyond its present limits. Among these are cutting-edge 11-12 tesla superconducting magnets, compact superconducting cavities for beam rotation with ultra-precise phase control, new technology and physical processes for beam collimation and 300 metre-long high-power superconducting links with negligible energy dissipation. The present document describes the technologies and components that will be used to realise the project and is intended to serve as the basis for the detailed engineering design of HL-LHC., Comment: 19 pages, Chapter 3 in High-Luminosity Large Hadron Collider (HL-LHC) : Preliminary Design Report

Published
2017
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8. Insertion Magnets

Author

Ambrosio, G, Anerella, M, Bossert, R, Cheng, D, Chlachidze, G, Dietderich, D, Ramos, D Duarte, Fabbricatore, P, Farinon, S, Felice, H, Ferracin, P, Fessia, P, Matos, J Garcia, Ghosh, A, Hagen, P, Bermudez, S Izquierdo, Juchno, M, Krave, S, Marchevsky, M, Nakamoto, T, Ogitsu, T, Perez, JC, Prin, H, Rifflet, JM, Sabbi, GL, Sasaki, K, Schmalzle, J, Segreti, M, Sugano, M, Todesco, E, Toral, F, Volpini, G, Wanderer, P, Wang, X, Weelderen, RV, Xu, Q, and Yu, M

Subjects
physics.acc-ph
Abstract

Chapter 3 in High-Luminosity Large Hadron Collider (HL-LHC) : PreliminaryDesign Report. The Large Hadron Collider (LHC) is one of the largest scientificinstruments ever built. Since opening up a new energy frontier for explorationin 2010, it has gathered a global user community of about 7,000 scientistsworking in fundamental particle physics and the physics of hadronic matter atextreme temperature and density. To sustain and extend its discovery potential,the LHC will need a major upgrade in the 2020s. This will increase itsluminosity (rate of collisions) by a factor of five beyond the original designvalue and the integrated luminosity (total collisions created) by a factor ten.The LHC is already a highly complex and exquisitely optimised machine so thisupgrade must be carefully conceived and will require about ten years toimplement. The new configuration, known as High Luminosity LHC (HL-LHC), willrely on a number of key innovations that push accelerator technology beyond itspresent limits. Among these are cutting-edge 11-12 tesla superconductingmagnets, compact superconducting cavities for beam rotation with ultra-precisephase control, new technology and physical processes for beam collimation and300 metre-long high-power superconducting links with negligible energydissipation. The present document describes the technologies and componentsthat will be used to realise the project and is intended to serve as the basisfor the detailed engineering design of HL-LHC.

Published
2017

9. Cold Mass Assembly of First Full-Scale Prototype of Beam Separation Dipole Magnet for the High-Luminosity LHC Upgrade

Author

Sugano, M., Nakamoto, T., Suzuki, K., Ogitsu, T., Ikemoto, Y., Terashima, A., Okada, N., Kimura, N., Kido, S., Chiba, T., Yanagisawa, M., Ichihara, T., Prin, H., Perez, J.C., Ramos, D., Todesco, E., and Felice, H.

Abstract

As a Japanese contribution to the High-Luminosity Large Hadron Collider (HL-LHC) upgrade, KEK is in charge of developing the beam separation dipole cold masses. The full-scale prototype magnet (MBXFP1) was constructed in Hitachi and powering test at cold was conducted at KEK. After the test, the magnet was returned to Hitachi for the final assembly of the cold mass. The pressure vessel design of the cold mass was carried out by KEK in accordance with ASME code. A new design of bus leads was proposed to satisfy the requirement of flexibility as well as mechanical support and electrical insulation. Welding of the extremity pipes was challenging due to tight position tolerance. This article reports the structure, pressure vessel design, and assembly of the LMBXF prototype cold mass (LMBXFP1) including bus work, instrumentation, and welding works with geometrical measurements.

Published
2024
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10. Uniaxial Tensile Stress Tolerance of Ultra-Thin Nb3Sn Composite Wires and Twisted Cables

Author

Sugano, M., Kikuchi, A., Kitaguchi, H., Nishijima, G., and Yagai, T.

Abstract

Ultra-thin A15 composite wires with a diameter of 0.03–0.05 mm are being developed by National Institute for Materials Science (NIMS) to realize flexible Rutherford cables for high field superconducting accelerator magnets. Since the bending strain is approximately proportional to the wire diameter, a cable composed of thin wires can be bent to a smaller bending diameter without the degradation of critical current (Ic). Thus, react-and-wind cables with ultra-thin Nb3Sn wires are expected to be realized. In our previous study, the basic mechanical properties including fracture strength and Young's modulus of 0.05-mm-thick bronze-processed Nb3Sn wires were evaluated by a single- fiber tensile test. As a next step, in this study, a tensile test was conducted for a twisted cable with 19 0.05-mm-thick wires at room temperature to confirm whether the mechanical strength of the twisted cable can be predicted from that of the single wire. The stress tolerance of the single wire and twisted cable was assessed by measuring Ic at 4.2 K after applying various uniaxial tensile loads at room temperature. The tensile stress limit of Ic was compared between the single wire and twisted cable.

Published
2024
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12. J-PARC MUSE H-line optimization for the g-2 and MuHFS experiments

Author

Toyoda, A., Fujiwara, Y., Fukao, Y., Kamigaito, O., Kawamura, N., Matsuda, Y., Mibe, T., Ogitsu, T., Saito, N., Sasaki, K., Shimomura, K., Sugano, M., Tanaka, K., Tomono, D., and Torii, H. A.

Subjects
Physics - Accelerator Physics
Abstract

Significant deviation of the anomalous magnetic moment value (g-2) observed by the muon g-2 experiment should be confirmed by the other experiment. This value is experimentally determined by frequency difference observed by the g-2/EDM experiment and muon magnetic moment observed by the muonium hyperfine splitting experiment (MuHFS). Both two experiments are planned to be performed at H-line of the J-PARC/MUSE under construction. We optimized the beamline layout for each experiment with G4beamline. For both experiments, statistics is the most important, thus beamline transmission efficiency should be maximized. Especially for the g-2, the purpose of the present effort is to compromise between small beam size and small leakage field. For the MuHFS, it is crucial to minimize leakage field at around final focus position, and to get all stopped muons within good field region of MuHFS magnet. Conceptual design of the several final focusing systems will be presented. contribution (or invited paper) to NUFACT 11, XIIIth International Workshop on Neutrino Factories, Super beams and Beta beams, 1-6 August 2011, CERN and University of Geneva, Comment: 4 pages, 5 figures, contribution (or invited paper) to NUFACT 11, XIIIth International Workshop on Neutrino Factories, Super beams and Beta beams, 1-6 August 2011, CERN and University of Geneva

Published
2011

14. Status and Challenges of the Interaction Region Magnets for HL-LHC

Author

Todesco, E., primary, Izquierdo Bermudez, S., additional, Foussat, A., additional, Gautheron, E., additional, Kirby, G., additional, Felice, H., additional, Perez, J. C., additional, Fleiter, J., additional, Barth, C., additional, Milanese, A., additional, Prin, H., additional, Lusa, N., additional, Ferradas Troitino, J., additional, Ferradas Troitino, S., additional, Mangiarotti, F., additional, Principe, R., additional, Willering, G., additional, Duarte Ramos, D., additional, Ballarino, A., additional, Russenschuck, S., additional, Devred, A., additional, Bednarek, M., additional, Rodriguez-Mateos, F., additional, Statera, M., additional, Prioli, M., additional, Sorbi, M., additional, Mariotto, S., additional, Farinon, S., additional, Bersani, A., additional, Caiffi, B., additional, Fabbricatore, P., additional, Levi, F., additional, Pampaloni, A., additional, Toral, F., additional, Martins, C., additional, Garcia Matos, J., additional, Nakamoto, T., additional, Sugano, M., additional, Suzuki, K., additional, Xu, Q., additional, Wang, Y., additional, Wei, W., additional, Apollinari, G., additional, Carcagno, R., additional, Feher, S., additional, Ambrosio, G., additional, Baldini, M., additional, Yu, M., additional, Nobrega, A., additional, Vouris, A., additional, Chlachidze, G., additional, Stoynev, S., additional, Amm, K., additional, Schmalzle, J., additional, Anarella, M., additional, Muratore, J., additional, Ben Yahia, A., additional, Joshi, P., additional, Ferracin, P., additional, Prestemon, S., additional, Cheng, D., additional, Strauss, T., additional, and Cooley, L., additional

Published
2023
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16. New precise measurement of muonium hyperfine structure interval at J-PARC

Author

Ueno, Y., Aoki, M., Fukao, Y., Higashi, Y., Higuchi, T., Iinuma, H., Ikedo, Y., Ishida, K., Ito, T. U., Iwasaki, M., Kadono, R., Kamigaito, O., Kanda, S., Kawall, D., Kawamura, N., Koda, A., Kojima, K. M., Kubo, M. K., Matsuda, Y., Mibe, T., Miyake, Y., Mizutani, T., Nagamine, K., Nishiyama, K., Ogitsu, T., Okubo, R., Saito, N., Sasaki, K., Shimomura, K., Strasser, P., Sugano, M., Tajima, M., Tanaka, K. S., Tomono, D., Torii, H. A., Torikai, E., Toyoda, A., Ueno, K., Yamamoto, A., and Yoshida, M.

Published
2017
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19. New muonium HFS measurements at J-PARC/MUSE

Author

Strasser, P., Aoki, M., Fukao, Y., Higashi, Y., Higuchi, T., Iinuma, H., Ikedo, Y., Ishida, K., Ito, T. U., Iwasaki, M., Kadono, R., Kamigaito, O., Kanda, S., Kawall, D., Kawamura, N., Koda, A., Kojima, K. M., Kubo, K., Matsuda, Y., Matsudate, Y., Mibe, T., Miyake, Y., Mizutani, T., Nagamine, K., Nishimura, S., Nishiyama, K., Ogitsu, T., Okubo, R., Saito, N., Sasaki, K., Seo, S., Shimomura, K., Sugano, M., Tajima, M., Tanaka, K. S., Tanaka, T., Tomono, D., Torii, H. A., Torikai, E., Toyoda, A., Ueno, K., Ueno, Y., Yagi, D., Yamamoto, A., and Yoshida, M.

Published
2016
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21. Magnetic Measurements of a Full-Scale Prototype of the HL-LHC Beam Separation Dipole

Author

Suzuki, K., primary, Ikemoto, Y., additional, Kawamata, H., additional, Kimura, N., additional, Nakamoto, T., additional, Ogitsu, T., additional, Ohata, H., additional, Okada, N., additional, Okada, R., additional, Sasaki, K., additional, Sugano, M., additional, Tanaka, K., additional, Takahashi, N., additional, Musso, A., additional, and Todesco, E., additional

Published
2022
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23. Mechanical Properties of Ultra-Thin Nb3Sn Composite Wires

Author

Sugano, M., Kikuchi, A., Kitaguchi, H., Nishijima, G., and Yagai, T.

Abstract

Flexible Rutherford cables are needed to realize high field superconducting magnets with A15 conductors based on the react-and-wind (R&W) technology. Aiming such an application, ultra-thin A15 composite wires with a diameter of 0.03–0.05 mm have been developed by the National Institute for Materials Science (NIMS). Mechanical properties of such ultra-thin Nb3Sn wires were evaluated to determine the cabling parameters and mechanical analysis of twisted cables. Tensile tests were performed at room temperature for 0.05 mm-thick Nb3Sn wires before and after heat treatment for the first time. Basic mechanical parameters such as 0.2% proof strength and fracture strength were evaluated from a stress–strain curve. Young's modulus of such a thin wire was determined from unlading and reloading slopes of a load–stroke curve for the specimens with different gauge lengths. Fracture strain was estimated without using extensometers and strain gauges by correcting for machine deformation. Based on these results, we concluded that a simple technique to measure stress–strain curves for ultra-thin Nb3Sn wires was able to be established.

Published
2023
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24. Influence of Axial Strain and Transverse Compressive Load on Critical Current of Nb3Sn Wires for the FCC

Author

Nakamoto, M., Sugano, M., Dhakarwal, M., Ogitsu, T., Nishijima, G., Awaji, S., Kawashima, S., Hopkins, S. C., and Ballarino, A.

Abstract

Nb3Sn superconducting wires are under consideration for producing high field accelerator magnets for the proposed Future Circular Collider (FCC) due to their high critical field. R&D studies are ongoing worldwide with a target non-Cu critical current density (Jc) of 1500 A/mm2 at 4.2 K, 16 T. As an accomplishment of this R&D, one of the conductor manufacturers, JASTEC, has developed Nb3Sn wires with non-Cu Jc higher than 1100 A/mm2 at 16 T, 4.2 K by a distributed-tin (DT) method. In high field Nb3Sn magnets, degradation of performance has been frequently reported due to the brittleness of Nb3Sn and the high electromagnetic force. To realize more robust Nb3Sn accelerator magnets, electro-mechanical properties of the conductors should be deeply understood. In this study, the variation of the critical current with mechanical loading is evaluated for a DT Nb3Sn wire in two configurations, i.e., under axial strain and under transverse compression.

Published
2023
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39. Flux pumping effect of HTS films in a traveling magnetic field

Author

Nakamura, T., Sugano, M., Doi, T., and Amemiya, N.

Subjects
High temperature superconductors -- Usage, Magnesium compounds -- Magnetic properties, Magnesium compounds -- Electric properties, Magnetic fields -- Analysis, Magnetic flux -- Measurement, Superconducting magnets -- Design and construction, Business, Electronics, Electronics and electrical industries
Published
2010

40. Dependence of transport-current losses in Mg[B.sub.2] superconducting wire on temperature and frequency

Author

Kajikawa, K., Kawano, T., Osaka, R., Nakamura, T., Sugano, M., Takahashi, M., and Wakuda, T.

Subjects
Helium -- Usage, Magnesium compounds -- Magnetic properties, Magnesium compounds -- Electric properties, Superconducting magnets -- Design and construction, Electric power systems -- Electric losses, Electric power systems -- Analysis, Business, Electronics, Electronics and electrical industries
Published
2010

42. Stress analysis of a high temperature superconductor coil wound with Bi-2223/Ag tapes for high field HTS/LTS NMR magnet application

Author

Seyong Choi, Kiyoshi, T., Seung-yong Hahn, and Sugano, M.

Subjects
Bismuth -- Magnetic properties, Bismuth -- Electric properties, Bismuth -- Mechanical properties, High temperature superconductors -- Mechanical properties, High temperature superconductors -- Composition, Nuclear magnetic resonance -- Analysis, Silver alloys -- Magnetic properties, Silver alloys -- Electric properties, Silver alloys -- Mechanical properties, Stress analysis (Engineering) -- Usage, Business, Electronics, Electronics and electrical industries
Published
2009

43. The High Luminosity LHC interaction region magnets towards series production

Author

Todesco, E, primary, Bajas, H, additional, Bajko, M, additional, Ballarino, A, additional, Bermudez, S Izquierdo, additional, Bordini, B, additional, Bottura, L, additional, De Rijk, G, additional, Devred, A, additional, Duarte Ramos, D, additional, Duda, M, additional, Ferracin, P, additional, Fessia, P, additional, Fleiter, J, additional, Fiscarelli, L, additional, Foussat, A, additional, Kirby, G, additional, Mangiarotti, F, additional, Mentink, M, additional, Milanese, A, additional, Musso, A, additional, Parma, V, additional, Perez, J C, additional, Prin, H, additional, Rossi, L, additional, Russenschuck, S, additional, Willering, G, additional, Enomoto, S, additional, Nakamoto, T, additional, Kimura, N, additional, Ogitsu, T, additional, Sugano, M, additional, Suzuki, K, additional, Wei, S, additional, Gong, L, additional, Wang, J, additional, Peng, Q, additional, Xu, Q, additional, Bersani, A, additional, Caiffi, B, additional, Fabbricatore, P, additional, Farinon, S, additional, Pampaloni, A, additional, Mariotto, S, additional, Prioli, M, additional, Sorbi, M, additional, Statera, M, additional, Garcia Matos, J, additional, Toral, F, additional, Ambrosio, G, additional, Apollinari, G, additional, Baldini, M, additional, Carcagno, R, additional, Feher, S, additional, Stoynev, S, additional, Chlachidze, G, additional, Marinozzi, V, additional, Lombardo, V, additional, Nobrega, F, additional, Strauss, T, additional, Yu, M, additional, Anerella, M, additional, Amm, K, additional, Joshi, P, additional, Muratore, J, additional, Schmalzle, J, additional, Wanderer, P, additional, Chen, D, additional, Gourlay, S, additional, Pong, I, additional, Prestemon, S, additional, Sabbi, G L, additional, Cooley, L, additional, and Felice, H, additional

Published
2021
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45. Strain analysis of [I.sub.c]([epsilon]) characteristic of YBCO coated conductor measured by a Walters spring

Author

Sugano, M., Choi, S., Miyazoe, A., Miyamatsu, K., Ando, T., Itoh, K., Kiyoshi, T., Wada, H., and Selvamanickam, V.

Subjects
Electric currents -- Measurement, Superconductors -- Evaluation, Business, Electronics, Electronics and electrical industries
Abstract

Critical current ([I.sub.c])-strain characteristic of YBCO coated conductor is measured by using a Walters spring (WASP). The results have shown that combined strain of bending and tensile strains are regarded as simple summation in the present YBCO coated conductor.

Published
2008

46. High-Luminosity Large Hadron Collider (HL-LHC): Technical design report

Author

Aberle, O., Béjar Alonso, I, Brüning, O, Fessia, P, Rossi, L, Tavian, L, Zerlauth, M, Adorisio, C., Adraktas, A., Ady, M., Albertone, J., Alberty, L., Alcaide Leon, M., Alekou, A., Alesini, D., Ferreira, B. Almeida, Lopez, P. Alvarez, Ambrosio, G., Andreu Munoz, P., Anerella, M., Angal-Kalinin, D., Antoniou, F., Apollinari, G., Apollonio, A., Appleby, R., Arduini, G., Alonso, B. Arias, Artoos, K., Atieh, S., Auchmann, B., Badin, V., Baer, T., Baffari, D., Baglin, V., Bajko, M., Ball, A., Ballarino, A., Bally, S., Bampton, T., Banfi, D., Barlow, R., Barnes, M., Barranco, J., Barthelemy, L., Bartmann, W., Bartosik, H., Barzi, E., Battistin, M., Baudrenghien, P., Alonso, I. Bejar, Belomestnykh, S., Benoit, A., Ben-Zvi, I., Bertarelli, A., Bertolasi, S., Bertone, C., Bertran, B., Bestmann, P., Biancacci, N., Bignami, A., Bliss, N., Boccard, C., Body, Y., Borburgh, J., Bordini, B., Borralho, F., Bossert, R., Bottura, L., Boucherie, A., Bozzi, R., Bracco, C., Bravin, E., Bregliozzi, G., Brett, D., Broche, A., Brodzinski, K., Broggi, F., Bruce, R., Brugger, M., Brüning, O., Buffat, X., Burkhardt, H., Burnet, J., Burov, A., Burt, G., Cabezas, R., Cai, Y., Calaga, R., Calatroni, S., Capatina, O., Capelli, T., Cardon, P., Carlier, E., Carra, F., Carvalho, A., Carver, L.R., Caspers, F., Cattenoz, G., Cerutti, F., Chancé, A., Rodrigues, M. Chastre, Chemli, S., Cheng, D., Chiggiato, P., Chlachidze, G., Claudet, S., Coello De Portugal, JM., Collazos, C., Corso, J., Costa Machado, S., Costa Pinto, P., Coulinge, E., Crouch, M., Cruikshank, P., Cruz Alaniz, E., Czech, M., Dahlerup-Petersen, K., Dalena, B., Daniluk, G., Danzeca, S., Day, H., De Carvalho Saraiva, J., De Luca, D., De Maria, R., De Rijk, G., De Silva, S., Dehning, B., Delayen, J., Deliege, Q., Delille, B., Delsaux, F., Denz, R., Devred, A., Dexter, A., Di Girolamo, B., Dietderich, D., Dilly, J.W., Doherty, A., Dos Santos, N., Drago, A., D.Drskovic, Ramos, D. Duarte, Ducimetière, L., Efthymiopoulos, I., Einsweiler, K., Esposito, L., Esteban Muller, J., Evrard, S., Fabbricatore, P., Farinon, S., Fartoukh, S., Faus-Golfe, A., Favre, G., Felice, H., Feral, B., Ferlin, G., Ferracin, P., Ferrari, A., Ferreira, L., Fessia, P., Ficcadenti, L., Fiotakis, S., Fiscarelli, L., Fitterer, M., Fleiter, J., Foffano, G., Fol, E., Folch, R., Foraz, K., Foussat, A., Frankl, M., Frasciello, O., Fraser, M., Menendez, P. Freijedo, Fuchs, J-F., Furuseth, S., Gaddi, A., Gallilee, M., Gallo, A., Alia, R. Garcia, Gavela, H. Garcia, Matos, J. Garcia, Garcia Morales, H., Valdivieso, A. Garcia-Tabares, Garino, C., Garion, C., Gascon, J., Gasnier, Ch., Gentini, L., Gentsos, C., Ghosh, A., Giacomel, L., Hernandez, K. Gibran, Gibson, S., Ginburg, C., Giordano, F., Giovannozzi, M., Goddard, B., Gomes, P., Gonzalez De La Aleja Cabana, M., Goudket, P., Gousiou, E., Gradassi, P., Costa, A. Granadeiro, Grand-Clément, L., Grillot, S., Guillaume, JC., Guinchard, M., Hagen, P., Hakulinen, T., Hall, B., Hansen, J., Heredia Garcia, N., Herr, W., Herty, A., Hill, C., Hofer, M., Höfle, W., Holzer, B., Hopkins, S., Hrivnak, J., Iadarola, G., Infantino, A., Bermudez, S. Izquierdo, Jakobsen, S., Jebramcik, M.A., Jenninger, B., Jensen, E., Jones, M., Jones, R., Jones, T., Jowett, J., Juchno, M., Julie, C., Junginger, T., Kain, V., Kaltchev, D., Karastathis, N., Kardasopoulos, P., Karppinen, M., Keintzel, J., Kersevan, R., Killing, F., Kirby, G., Korostelev, M., Kos, N., Kostoglou, S., Kozsar, I., Krasnov, A., Krave, S., Krzempek, L., Kuder, N., Kurtulus, A., Kwee-Hinzmann, R., Lackner, F., Lamont, M., Lamure, A.L., m, L. Lari, Lazzaroni, M., Le Garrec, M., Lechner, A., Lefevre, T., Leuxe, R., Li, K., Li, Z., Lindner, R., Lindstrom, B., Lingwood, C., Löffler, C., Lopez, C., Lopez-Hernandez, LA., Losito, R., Maciariello, F., Macintosh, P., Maclean, E.H., Macpherson, A., Maesen, P., Magnier, C., Durand, H. Mainaud, Malina, L., Manfredi, M., Marcellini, F., Marchevsky, M., Maridor, S., Marinaro, G., Marinov, K., Markiewicz, T., Marsili, A., Martinez Urioz, P., Martino, M., Masi, A., Mastoridis, T., Mattelaer, P., May, A., Mazet, J., Mcilwraith, S., McIntosh, E., Medina Medrano, L., Mejica Rodriguez, A., Mendes, M., Menendez, P., Mensi, M., Mereghetti, A., Mergelkuhl, D., Mertens, T., Mether, L., Métral, E., Migliorati, M., Milanese, A., Minginette, P., Missiaen, D., Mitsuhashi, T., Modena, M., Mokhov, N., Molson, J., Monneret, E., Montesinos, E., Moron-Ballester, R., Morrone, M., Mostacci, A., Mounet, N., Moyret, P., Muffat, P., Muratori, B., Muttoni, Y., Nakamoto, T., Navarro-Tapia, M., Neupert, H., Nevay, L., Nicol, T., Nilsson, E., Ninin, P., Nobrega, A., Noels, C., Nolan, E., Nosochkov, Y., Nuiry, FX., Oberli, L., Ogitsu, T., Ohmi, K., Olave R., Oliveira, J., Orlandi, Ph., Ortega, P., Osborne, J., Otto, T., Palumbo, L., Papadopoulou, S., Papaphilippou, Y., Paraschou, K., Parente, C., Paret, S., Park, H., Parma, V., Pasquino, Ch., Patapenka, A., Patnaik, L., Pattalwar, S., Payet, J., Pechaud, G., Pellegrini, D., Pepinster, P., Perez, J., Espinos, J. Perez, Marcone, A. Perillo, Perin, A., Perini, P., Persson, T.H.B., Peterson, T., Pieloni, T., Pigny, G., Pinheiro de Sousa, J.P., Pirotte, O., Plassard, F., Pojer, M., Pontercorvo, L., Poyet, A., Prelipcean, D., Prin, H., Principe, R., Pugnat, T., Qiang, J., Quaranta, E., Rafique, H., Rakhno, I., Duarte, D. Ramos, Ratti, A., Ravaioli, E., Raymond, M., Redaelli, S., Renaglia, T., Ricci, D., Riddone, G., Rifflet, J., Rigutto, E., Rijoff, T., Rinaldesi, R., Riu Martinez, O., Rivkin, L., Rodriguez Mateos, F., Roesler, S., Romera Ramirez, I., Rossi, A., Rossi, L., Rude, V., Rumolo, G., Rutkovksi, J., Sabate Gilarte, M., Sabbi, G., Sahner, T., Salemme, R., Salvant, B., Galan, F. Sanchez, Santamaria Garcia, A., Santillana, I., Santini, C., Santos, O., Diaz, P. Santos, Sasaki, K., Savary, F., Sbrizzi, A., Schaumann, M., Scheuerlein, C., Schmalzle, J., Schmickler, H., Schmidt, R., Schoerling, D., Segreti, M., Serluca, M., Serrano, J., Sestak, J., Shaposhnikova, E., Shatilov, D., Siemko, A., Sisti, M., Sitko, M., Skarita, J., Skordis, E., Skoufaris, K., Skripka, G., Smekens, D., Sobiech, Z., Sosin, M., Sorbio, M., Soubelet, F., Spataro, B., Spiezia, G., Stancari, G., Staterao, M., Steckert, J., Steele, G., Sterbini, G., Struik, M., Sugano, M., Szeberenyi, A., Taborelli, M., Tambasco, C., Rego, R. Tavares, Tavian, L., Teissandier, B., Templeton, N., Therasse, M., Thiesen, H., Thomas, E., Toader, A., Todesco, E., Tomás, R., Toral, F., Torres-Sanchez, R., Trad, G., Triantafyllou, N., Tropin, I., Tsinganis, A., Tuckamantel, J., Uythoven, J., Valishev, A., Van Der Veken, F., Van Weelderen, R., Vande Craen, A., Vazquez De Prada, B., Velotti, F., Verdu Andres, S., Verweij, A., Shetty, N. Vittal, Vlachoudis, V., Volpini, G., Wagner, U., Wanderer, P., Wang, M., Wang, X., Wanzenberg, R., Wegscheider, A., Weisz, S., Welsch, C., Wendt, M., Wenninger, J., Weterings, W., White, S., Widuch, K., Will, A., Willering, G., Wollmann, D., Wolski, A., Wozniak, J., Wu, Q., Xiao, B., Xiao, L., Xu, Q., Yakovlev, Y., Yammine, S., Yang, Y., Yu, M., Zacharov, I., Zagorodnova, O., Zannini, C., Zanoni, C., Zerlauth, M., Zimmermann, F., Zlobin, A., Zobov, M., and Zurbano Fernandez, I.

Subjects
Accelerators and Storage Rings
Abstract

The Large Hadron Collider (LHC) is one of the largest scientific instruments ever built. Since opening up anew energy frontier for exploration in 2010, it has gathered a global user community of about 9000 scientists working in fundamental particle physics and the physics of hadronic matter at extreme temperature and density. To sustain and extend its discovery potential, the LHC will need a major upgrade in the 2020s. This will increase its instantaneous luminosity (rate of collisions) by a factor of five beyond the original design valueand the integrated luminosity (totalnumber of collisions) by a factor ten. The LHC is already a highly complexand exquisitely optimised machine so this upgrade must be carefully conceived and will require new infrastructures(underground and on surface)and over a decade to implement. The new configuration, known as High Luminosity LHC (HL-LHC), relies on a number of key innovations that push accelerator technology beyond its present limits. Among these are cutting-edge 11–12Tesla superconducting magnets, compact superconducting cavities for beam rotation with ultra-precise phase control, new technology and physical processes for beam collimation and 100 metre-long high-power superconducting links with negligible energy dissipation, all of which required several years of dedicated R&D; effort on a global international level. The present document describes the technologies and components that will be used to realise the projectand is intended to serve as the basis for the detailed engineering design of the HL-LHC.

Published
2020

49. Improvement of strain tolerance in RE-123 coated conductors by controlling the yielding behavior of hastelloy C-276 substrates

Author

Sugano, M., Osamura, K., Prusseit, W., Adachi, H., and Kametani, F.

Subjects
Annealing -- Analysis, Flux pinning -- Analysis, Business, Electronics, Electronics and electrical industries
Abstract

The various effects of controlling the yielding behavior of hastelloy C-276 substrates on their strain tolerance in RE-123 coated conductors are analyzed. The analysis reveals that annealing causes an enlargement in the elastic limit of these conductors by pinning the mobile dislocations.

Published
2007

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