Paper | Title | Page |
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MOPC158 | RF Capture of a Beam with Charge-exchanging Multi-turn Injection | 454 |
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Funding: This work was supported by MEXT of Japan in the framework of a task entitled ”Research and Development for an Accelerator-Driven Sub-critical System Using an FFAG Accelerator”. In the fixed field alternating gradient (FFAG) synchrotron in Kyoto university research reactor Institute (KURRI), charge exchange injection was adopted since 2011. The charge stripping foil is located on the closed orbit of the injection energy, and no bump orbit system is used. Instead, the injected beam escapes from the stripping foil according to the closed-orbit shift due to acceleration. In this scheme, it is important to minimize the number of foil hitting, which causes emittance growth and foil heating. In this paper, the rf capture is studied by means of simulation. |
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MOPZ001 | MuSIC, the World's Highest Intensity DC Muon Beam using a Pion Capture System | 820 |
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MuSIC is a project to provide the world's highest-intensity muon beam with continuous time structure at Research Center of Nuclear Physics (RCNP) of Osaka University, Japan. A pion capture system using a superconducting solenoid magnet and a part of superconducting muon transport solenoid channel have been build in 2010. The highest muon production efficiency was demonstrated by the beam test carried out in February 2011. The result concludes that the MuSIC can provide more than 109 muons/sec using a 400 W proton beam. The pion capture system is one of very important technologies for future muon programs such as muon to electron conversion searches, neutrino factories, and a muon collider. The MuSIC built the first pion capture system and demonstrate its potential to provide an intense muon beam. The construction on the entire beam channel of the MuSIC will be finished in five years. We plan to carry out not only an experiment to search the lepton flavor violating process but also other experiments for muon science and their applications using the intense muon beam at RCNP. | ||
WEPS074 | H− Injection Studies of FFAG Accelerator at KURRI | 2676 |
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Aiming to demonstrate the basic feasibility of the accelerator driven sub-critical reactor (ADSR), proton Fixed Field Alternating Gradient (FFAG) accelerator complex as a neutron production driver has been constructed in Kyoto University Research Reactor Institute (KURRI). In order to upgrade beam power of the FFAG neutron source, a project about a new H− linac injector for FFAG main ring instead of present injector has been started. A charge exchange multi-turn beam injection has been performed for the first time at FFAG main ring in KURRI. In this paper, the detail of injection system and beam study of low energy H− injection at FFAG is described. | ||
WEPS076 | Straight Scaling FFAG | 2682 |
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Recent developments in scaling fixed field alternating gradient (FFAG) accelerators have opened new ways for lattice design, with straight sections, and insertions like dispersion suppressors. An experiment to study straight sections and dispersion suppressors is under progress at KURRI. | ||
WEPS077 | Present Status of FFAG Proton Accelerator at KURRI* | 2685 |
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The 150MeV FFAG proton accelerator has been developed at Kyoto University Research Reactor Institute(KURRI) for the fundamental study of Accelerator Driven Sub-crittical Reactor (ADSR). Recently, a new H− injector was constructed to improve the beam quality and intensity. The paper will describe the detail of the preset status of FFAG proton accelerator at KURRI. | ||
WEPS078 | Compact FFAG Accelerators for Medium Energy Hadron Applications | 2688 |
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Funding: This work was supported by Japan Science and Technology Agency under Strategic Promotion of Innovative Research and Development Program. Medium energy hadron beams are widely applied in accelerator driven subcritical systems (ADSR), high intensity neutron sources and carbon therapy. Compactness feature is important for this energy region, especially in the case of medical use purposes. This paper introduces a novel superferric scheme with scaling fixed-field alternating gradient (FFAG) accelerators, which can deliver 400MeV/u carbon ions or 1.2GeV protons. By using high permeability materials, 5T magnetic field with high field index can be achieved to reduce accelerator circumference significantly. The lattice configuration and design of superferric magnet are described in details. |
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WEPS079 | Serpentine Acceleration in Scaling FFAG | 2691 |
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A serpentine acceleration in scaling FFAG accelerator has been examined. In this scheme, high-energy and high-current beam can be obtained in non-relativistic energy region. Longitudinal hamiltonian is also derived analytically. | ||
MOPZ004 | Studies for the PRISM FFAG Ring for the Next Generation Muon to Electron Conversion Experiment | 826 |
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High intensity and high quality muon beams are needed for the next generation lepton flavour violation experiments. Such beams can be produced by sending a short proton pulse to a pion production target, capturing the pions and performing RF phase rotation on the resulting muon beam in an FFAG ring. Such a solution was proposed for the PRISM project and this paper summarizes its current status. In particular the PRISM task force was created to address the accelerator and detector issues that need to be solved in order to realise the PRISM experiment. Alternative designs for the PRISM FFAG ring are discussed and their performance compared. The injection/extraction systems and matching to the solenoid channels upstream and downstream of the FFAG ring are presented. The future direction for the study will be outlined. | ||