Author: Uesugi, T.
Paper Title Page
MOPRB019 Beam Optics Study on FFA-MERIT Ring 613
 
  • H. Okita, Y. Ishi, Y. Kuriyama, Y. Mori, Y. Ono, A. Taniguchi, T. Uesugi
    Kyoto University, Research Reactor Institute, Osaka, Japan
  • N. Ikeda, Y. Yonemura
    Kyushu University, Department of Applied Quantum Physics and Nuclear Engineering, Fukuoka, Japan
  • M. Kinsho, K. Okabe, M. Yoshimoto
    JAEA/J-PARC, Tokai-mura, Japan
  • Y. Miyake
    KEK, Tokai, Ibaraki, Japan
  • M. Muto
    New Affiliation Request Pending, -TBS-, Unknown
  • A. Sato
    Osaka University, Osaka, Japan
  
  Funding: This work was funded by ImPACT Program of Council for Science, Technology and Innovation (Cabinet Office, Government of Japan).
Intense negative muon source MERIT (Multiplex Energy Recovery Internal Target) for the nuclear transformation to mitigate the long lived fission products from nuclear plants has been proposed. For the purpose of proof-of-principle of MERIT scheme, FFA ring has been developed. The results of beam optics study for MERIT ring will be reported in this conference. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-MOPRB019  
About • paper received ※ 30 April 2019       paper accepted ※ 23 May 2019       issue date ※ 21 June 2019  
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MOPRB021 Remodeling of 150 MeV FFAG Main Ring at KURNS to Pion Production Ring 616
 
  • K. Suga, Y. Fuwa, Y. Ishi, Y. Kuriyama, Y. Mori, H. Okita, T. Uesugi
    Kyoto University, Research Reactor Institute, Osaka, Japan
  
  A possibility of remodeling main ring of 150 MeV FFAG accelerator at Kyoto University, Institute for Integrated Radiation and Nuclear Science (KURNS) to Pion Production Ring (PPR) for muon transmutation study has been discussed. Design was made on the assumption that 400 MeV proton beams circulate and hit a target in the ring to generate pions. Optimizations of lattice parameters and 3D magnet modeling are reported.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-MOPRB021  
About • paper received ※ 30 April 2019       paper accepted ※ 23 May 2019       issue date ※ 21 June 2019  
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MOPRB063 Longitudinal Tomography in a Scaling FFA 719
 
  • D.J. Kelliher, C. Brown, J.-B. Lagrange, S. Machida, C.R. Prior, C.T. Rogers
    STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
  • Y. Ishi, Y. Kuriyama, H. Okita, T. Uesugi
    Kyoto University, Research Reactor Institute, Osaka, Japan
  • S.L. Sheehy
    JAI, Oxford, United Kingdom
  
  In a synchrotron the rate of acceleration is limited by the ramp rate of the bending field. There is no such constraint in a Fixed Field alternating gradient Accelerator (FFA), allowing a much higher repetition rate and novel modes of operation such as beam stacking. It is of interest to obtain a picture of the longitudinal phase space from experimental data in order to diagnose the response of the beam to various RF programmes. Longitudinal tomography, already well established in synchrotrons, involves reconstructing the phase space using bunch monitor data obtained for a sufficient number of turns in a synchrotron oscillation. Here we reconstruct the longitudinal phase space using data from the 150 MeV scaling FFA at KURNS, Osaka, Japan.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-MOPRB063  
About • paper received ※ 15 May 2019       paper accepted ※ 20 May 2019       issue date ※ 21 June 2019  
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WEPGW040 Study of Beam Injection Efficiency in the Fixed Field Alternating Gradient Synchrotron at KURNS 2564
 
  • T. Uesugi, Y. Fuwa, Y. Ishi, Y. Kuriyama, Y. Mori, H. Okita, K. Suga
    Kyoto University, Research Reactor Institute, Osaka, Japan
  
  In the fixed field alternating gradient synchrotron in KURNS, there are serious beam losses. In order to evaluate the efficiencies of beam injection, rf capture, and extraction, separately, a well calibrated electro-static bunch monitor was installed to measure the circulating beam current at each energy region. This paper reports the design of the monitor, calibration, and first results of beam measurements.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-WEPGW040  
About • paper received ※ 16 May 2019       paper accepted ※ 21 May 2019       issue date ※ 21 June 2019  
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