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11.
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Cold Mass Assembly of First Full-Scale Prototype of Beam Separation Dipole Magnet for the High-Luminosity LHC Upgrade
/ Sugano, M (KEK, Tsukuba) ; Nakamoto, T (KEK, Tsukuba) ; Suzuki, K (KEK, Tsukuba) ; Ogitsu, T (KEK, Tsukuba) ; Ikemoto, Y (KEK, Tsukuba) ; Terashima, A (KEK, Tsukuba) ; Okada, N (KEK, Tsukuba) ; Kimura, N (Tokyo U., ICRR) ; Kido, S (Ibaraki U., Hitachi) ; Chiba, T (Ibaraki U., Hitachi) et al.
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. [...]
2024 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4002106
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12.
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Experimental Examples of Quench Protection With Varistors to Reduce Quench Voltages and Hot-Spot Peak Temperatures
/ Galvin, T ; Kirby, G A (CERN) ; Coll, D ; Mangiarotti, F J (CERN) ; Wu, W ; Ou, X ; Xu, Q (Beijing, Inst. High Energy Phys.) ; Zheng, S ; Nakamoto, T (KEK, Tsukuba) ; Suzuki, K (KEK, Tsukuba)
Superconducting magnet protection must address two main areas of the magnet and circuit performance, namely conductor hot-spot temperatures and circuit voltages. The maximum hot-spot temperatures and voltages occur during the superconductor's transition called a quench and the subsequent energy extraction. [...]
2022 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 32 (2022) 4702505
In : 27th International Conference on Magnet Technology (MT-27), Fukuoka, Japan, 15 - 19 Nov 2021, pp.4702505
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13.
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Test Result of a Full-Scale Prototype of Beam Separation Dipole Magnet for the High-Luminosity LHC Upgrade
/ Sugano, M (KEK, Tsukuba) ; Suzuki, K (KEK, Tsukuba) ; Nakamoto, T (KEK, Tsukuba) ; Iida, M (KEK, Tsukuba) ; Ikemoto, Y (KEK, Tsukuba) ; Kawamata, H (KEK, Tsukuba) ; Ogitsu, T (KEK, Tsukuba) ; Ohata, H (KEK, Tsukuba) ; Okada, N (KEK, Tsukuba) ; Okada, R (KEK, Tsukuba) et al.
High Energy Accelerator Research Organization (KEK) is developing Nb-Ti based beam separation dipole (MBXF) for the high-luminosity Large Hadron Collider (HL-LHC) upgrade within the framework of CERN–KEK collaboration. This magnet produces field integral of 35 T•m in a 150 mm bore at 12 kA and 1.9 K. [...]
2022 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 32 (2022) 4003407
In : 27th International Conference on Magnet Technology (MT-27), Fukuoka, Japan, 15 - 19 Nov 2021, pp.4003407
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14.
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Status and challenges of the interaction region magnets for HL-LHC
/ Todesco, E (CERN) ; Izquierdo Bermudez, S (CERN) ; Foussat, A (CERN) ; Gautheron, E (CERN) ; Kirby, G (CERN) ; Felice, H (CERN) ; Perez, J C (CERN) ; Fleiter, J (CERN) ; Barth, C (CERN) ; Milanese, A (CERN) et al.
About one hundred magnets of six different types shall be installed in the High Luminosity LHC (HL-LHC) in the years 2026-2028 at CERN. The magnets design, construction and test are based on CERN collaborations with institutes and industrial partners in USA, Spain, Italy, Japan and China. [...]
FERMILAB-PUB-22-861-TD.-
2023 - 8 p.
- Published in : IEEE Trans. Appl. Supercond. 33 (2023) 4001608
Fulltext: PDF; External link: Fermilab Accepted Manuscript
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15.
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Characterization of the Radiation Resistance of Glass Fiber Reinforced Plastics for Superconducting Magnets
/ Musso, Andrea (CERN) ; Nakamoto, Tatsushi (KEK, Tsukuba) ; Grande, Beatriz Del Valle (Bern U.) ; Borderas, Cinta Lucia Marraco (LPHE, Lausanne) ; Sousa, Daniela Fagundes da (Lisbon, IST) ; Sugano, Michinaka (KEK, Tsukuba) ; Ogitsu, Toru (KEK, Tsukuba) ; Tavares, Sandra Sequeira (Lausanne U.)
The overall performance of accelerator magnets strongly relies on electrical and mechanical robustness of their components. With an increase of the energy, future particle accelerators will have to withstand integral doses of ionizing radiation of up to several tens of MGy. [...]
2022 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 32 (2022) 7700405
In : 27th International Conference on Magnet Technology (MT-27), Fukuoka, Japan, 15 - 19 Nov 2021, pp.7700405
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16.
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Magnetic Measurements of a Full-Scale Prototype of the HL-LHC Beam Separation Dipole
/ Suzuki, K (KEK, Tsukuba) ; Ikemoto, Y (KEK, Tsukuba) ; Kawamata, H (KEK, Tsukuba) ; Kimura, N (Tokyo U., ICRR) ; Nakamoto, T (KEK, Tsukuba) ; Ogitsu, T (KEK, Tsukuba) ; Ohata, H (KEK, Tsukuba) ; Okada, N (KEK, Tsukuba) ; Okada, R (KEK, Tsukuba) ; Sasaki, K (KEK, Tsukuba) et al.
High Energy Research Organization (KEK) has engaged in development of the beam separation dipole, MBXF, toward the HL-LHC project. The magnet has a full length of 7 m and generates a magnetic field of 5.6 T in the magnet center at nominal operating condition of 12 kA and 1.9 K. [...]
2022 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 32 (2022) 9000407
In : 27th International Conference on Magnet Technology (MT-27), Fukuoka, Japan, 15 - 19 Nov 2021, pp.9000407
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17.
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The High Luminosity LHC interaction region magnets towards series production
/ Todesco, E (CERN) ; Bajas, H (CERN) ; Bajko, M (CERN) ; Ballarino, A (CERN) ; Bermudez, S Izquierdo (CERN) ; Bordini, B (CERN) ; Bottura, L (CERN) ; De Rijk, G (CERN) ; Devred, A (CERN) ; Duarte Ramos, D (CERN) et al.
The High Luminosity Large Hadron Collider (HL-LHC) is the new flagship project of CERN. First endorsed in 2013 and approved in 2016, HL-LHC is an upgrade of the accelerator aiming to increase by a factor of ten the statistics of the LHC collisions at the horizon of 2035–2040. [...]
FERMILAB-PUB-21-134-TD.-
2021 - 38 p.
- Published in : Supercond. Sci. Technol. 34 (2021) 053001
Fulltext: PDF;
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18.
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ebook
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19.
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Magnetic Field Design of a Full-Scale Prototype of the HL-LHC Beam Separation Dipole With Geometrical and Iron-Saturation Corrections
/ Suzuki, Kento (KEK, Tsukuba) ; Higashi, Norio (KEK, Tsukuba) ; Iida, Masahisa (KEK, Tsukuba) ; Ikeda, Hiroshi (KEK, Tsukuba) ; Ikemoto, Yukiko (KEK, Tsukuba) ; Kawamata, Hiroshi (KEK, Tsukuba) ; Kimura, Nobuhiro (KEK, Tsukuba) ; Nakamoto, Tatsushi (KEK, Tsukuba) ; Ogitsu, Toru (KEK, Tsukuba) ; Ohata, Hirokatsu (KEK, Tsukuba) et al.
High Energy Research Organization (KEK) has developed three short-scale model magnets of the beam separation dipole, MBXF, which is to be installed for the High Luminosity Large Hadron Collider, HL-LHC, in CERN. We will soon undertake production of a prototype of MBXF and its magnetic design has to be finalized before the fabrication. [...]
2020 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4002706
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20.
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Improvement in Training Performance by Enhancing Coil Mechanical Support in the Beam Separation Dipole Model Magnet for the HL-LHC Upgrade
/ Sugano, Michinaka (KEK, Tsukuba) ; Suzuki, Kento (KEK, Tsukuba) ; Nakamoto, Tatsushi (KEK, Tsukuba) ; Higashi, Norio (KEK, Tsukuba) ; Iida, Masahisa (KEK, Tsukuba) ; Ikeda, Hiroshi (KEK, Tsukuba) ; Ikemoto, Yukiko (KEK, Tsukuba) ; Kawamata, Hiroshi (KEK, Tsukuba) ; Kimura, Nobuhiro (KEK, Tsukuba) ; Ogitsu, Toru (KEK, Tsukuba) et al.
Nb-Ti based large-aperture beam separation dipoles (MBXFs) will be installed on both sides of two interaction points, ATLAS and CMS, for the high-luminosity LHC upgrade. The most important requirements for MBXF is a coil aperture of 150 mm and the field integral of 35 T·m. [...]
2020 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4001806
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