A5042751648- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Muon and positron interactions and applications
- Physics of Superconductivity and Magnetism
- Spacecraft and Cryogenic Technologies
- Neutrino Physics Research
- Magnetic confinement fusion research
- Particle physics theoretical and experimental studies
- Superconductivity in MgB2 and Alloys
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- HVDC Systems and Fault Protection
- Thermal Analysis in Power Transmission
- Astrophysics and Cosmic Phenomena
- Radiation Therapy and Dosimetry
- Magnetic Properties and Applications
- Atomic and Molecular Physics
- Fusion materials and technologies
- Magnetic Field Sensors Techniques
- Nuclear Physics and Applications
- High-Energy Particle Collisions Research
- Radiation Detection and Scintillator Technologies
- Ammonia Synthesis and Nitrogen Reduction
- Advanced NMR Techniques and Applications
High Energy Accelerator Research Organization
2016-2025
Yokohama National University
2024
Japan Proton Accelerator Research Complex
2010-2023
Kyoto University
2013-2020
Kyoto Katsura Hospital
2013-2020
Tianjin Hi-Tech Superconducting Electronic Technology (China)
2020
Lawrence Berkeley National Laboratory
2001-2017
Toshiba (Japan)
2013
Osaka University
2011-2013
Kyoto University Research Reactor Institute
2013
This paper introduces a new approach to measure the muon magnetic moment anomaly |$a_{\mu} = (g-2)/2$| and electric dipole (EDM) |$d_{\mu}$| at J-PARC facility. The goal of our experiment is |$a_{\mu}$| using an independent method with factor 10 lower momentum, 20 smaller diameter storage-ring solenoid compared previous ongoing |$g-2$| experiments unprecedented quality storage field. Additional significant differences from present experimental include 1000 transverse emittance beam...
Abstract The High Luminosity Large Hadron Collider (HL-LHC) is the new flagship project of CERN. First endorsed in 2013 and approved 2016, HL-LHC an upgrade accelerator aiming to increase by a factor ten statistics LHC collisions at horizon 2035–2040. relies on cutting edge technologies: among them, large aperture superconducting magnets will replace present hardware allow smaller beam size two interaction points (IPs). involves construction about 150 six different types: quadrupole triplet,...
Various superconducting detector solenoids for particle physics have been developed in the world. The key technology is aluminum-stabilized conductor almost all magnets experiments. With progress of conductor, coil fabrication has progressed as well, such inner winding technique, indirect cooling, transparent vacuum vessel, quench protection scheme using pure aluminum strips and so on. design study future big projects Japan Europe, that is, ILC, FCC CLIC, based on technologies established...
A superconducting rotating gantry for heavy-ion therapy is being designed. This isocentric can transport heavy ions with the maximum energy of $430\text{ }\text{ }\mathrm{MeV}/u$ to an isocenter irradiation angles over 0--360 degrees, and further capable performing three-dimensional raster-scanning irradiation. The combined-function magnets will be employed gantry. optimized beam optics allow a compact design large scan size at isocenter; length radius approximately 13 5.5 m, respectively,...
A key challenge for a future circular collider (FCC) with centre-of-mass energy of 100 TeV and circumference in the range km is development high-field superconducting accelerator magnets, capable providing 16 T dipolar field quality 50 mm aperture. This paper summarizes strategy actions being undertaken framework FCC Magnet Technology Program Work Package 5 EuroCirCol.
A next step of energy increase hadron colliders beyond the LHC requires high-field superconducting magnets capable providing a dipolar field in range 16 T 50-mm aperture with accelerator quality. These characteristics could meet requirements for an upgrade to twice present beam or 100-TeV center mass future circular collider. This paper summarizes activities and plans development these magnets, inand U.S. Magnet Development Program.
The study of next-generation high-energy accelerators based on 16 T dipoles has emphasized the need for higher performance, cost-effective Nb <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> Sn superconducting wires. A Conductor Development Program aiming to reach a non-copper critical current density (J xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> ) 1500 A/mm <sup xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> at and 4.2 K been...
We describe the magnet challenges for a Muon Collider, an exciting option considered future of particle physics at energy frontier. Starting from comprehensive work performed by US Accelerator Program, we have reviewed performance specifications dictated beam and operating conditions to satisfy accelerator needs. Among many magnets that make up muon collider, identified four systems represent well envelope challenges: target capture solenoid, final cooling dipoles collider dipoles. These...
A new muon beamline, science innovative channel (MuSIC), was set up at the Research Centre for Nuclear Physics (RCNP), Osaka University, in Osaka, Japan, using 392 MeV proton beam impinging on a target. The production of an intense relies efficient capture pions, which subsequently decay to muons, novel superconducting solenoid magnet system. After pion-capture first $36^\circ$ curved transport line commissioned and flux measured. In order detect target either copper or magnesium placed stop...
A future circular collider (FCC) with a center-of-mass energy of 100 TeV and circumference around km, or an upgrade the LHC (HE-LHC) to 27 require bending magnets providing 16 T in 50-mm aperture. Several development programs for these magnets, based on Nb <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> Sn technology, are being pursued Europe U.S. In programs, cos-theta, block-type, common-coil, canted-cos-theta explored; first model...
Electromagnetic field analyses were carried out to study the influence of coated-conductor magnetisation, i.e. screening (shielding) current, on quality a dipole magnet in rotating gantry for hadron cancer therapy. The made cross section cosine-theta carbon ions, which generated 2.90 T magnetic field. temporal profile (temporal variation) current was determined based actual excitation schemes magnets gantry. experimentally superconducting property coated conductor considered, and we...
To study the influence of coated-conductor magnetization on field quality accelerator magnets, we made a small dipole magnet consisting four racetrack coils wound with GdBCO coated conductors and measured its magnetic in liquid nitrogen by using rotating pick-up coils. We focused sextupole components (coefficients) field, which vary time owing to decay conductors. About 50 min (3055 s) after current was ramped up A, coefficient normalized design value component, i.e., calculated designed...
KEK has been conducting the design study of beam separation dipole magnet, D1, for High Luminosity LHC (HL-LHC) upgrade within a framework CERN-KEK collaboration. The D1 magnet coil aperture 150 mm using Nb-Ti superconducting cable and nominal field 5.6 T can be generated at 12 kA 1.9 K. A integral 35 T·m is required. development 2-m-long model started since May 2013. This paper describes status short as well advancement fundamental studies.
The behavior of Rutherford-type cables under a time-dependent magnetic field is studied. Existing models are extended describing the currents flowing through resistive contacts at crossovers between cable strands by considering crossover current distributions that not uniform along axis. generalized system equations applied to few cases practical interest and shows that, if uniform, distribution periodic, with period equal pitch length.
Combined-function superconducting magnets are designed for a heavy-ion rotating gantry. The coils of these have surface winding coil structure. To minimize sagitta, the as well their curved shape. Ten installed on With magnets, gantry can transport carbon ions having 430 MeV/u to patient with irradiation angles over ±180 degrees, and is further capable performing three-dimensional raster-scanning irradiation. Since would be rotated by compact cryocoolers employed cooling coil. Because has...
The High-Luminosity Large Hadron Collider upgrade (LHC) project aims to increase the peak luminosity of LHC 5 ×10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">34</sup> cm xmlns:xlink="http://www.w3.org/1999/xlink">- 2</sup> s 1</sup> , and a total integrated 3000 fb from 2020 2030 by upgrading low-beta insertion system for ATLAS CMS experiments. aperture magnets including focusing/defocusing quadrupoles separation dipoles will be doubled...
A superconducting magnet system for the COMET experiment is now under construction in Japan Proton Accelerator Research Complex to achieve most intense negatively charged muon beam world. The main part of system, Pion Capture Solenoid, will be exposed severe irradiation from production target inside magnets; consequently, coils heated by interactions with secondary particle. degradation on thermal conductivity also expected these conduction-cooled as radiation damage can accumulated a...
Superconducting combined function magnets will be utilized for the 50 GeV-750 kW proton beam line J-PARC neutrino experiment and an R&D program has been launched at KEK. The magnet is designed to provide a with dipole field of 2.59 T quadrupole 18.7 T/m in coil aperture 173.4 mm. A single layer proposed reduce fabrication cost arrangement 2D cross-section results left-right asymmetry. This paper reports design study magnet.