TY  - CONF
AU  - Okita, H.
AU  - Ikeda, N.
AU  - Ishi, Y.
AU  - Kinsho, M.
AU  - Kuriyama, Y.
AU  - Miyake, Y.
AU  - Mori, Y.
AU  - Muto, M.
AU  - Okabe, K.
AU  - Ono, Y.
AU  - Sato, A.
AU  - Taniguchi, A.
AU  - Uesugi, T.
AU  - Yonemura, Y.
AU  - Yoshimoto, M.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Beam Optics Study on FFA-MERIT Ring
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - 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.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 613
EP  - 615
KW  - injection
KW  - target
KW  - proton
KW  - betatron
KW  - acceleration
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOPRB019
UR  - http://jacow.org/ipac2019/papers/moprb019.pdf
ER  - 

TY  - CONF
AU  - Suga, K.
AU  - Fuwa, Y.
AU  - Ishi, Y.
AU  - Kuriyama, Y.
AU  - Mori, Y.
AU  - Okita, H.
AU  - Uesugi, T.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Remodeling of 150 MeV FFAG Main Ring at KURNS to Pion Production Ring
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - 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.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 616
EP  - 618
KW  - FFAG
KW  - proton
KW  - target
KW  - focusing
KW  - resonance
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOPRB021
UR  - http://jacow.org/ipac2019/papers/moprb021.pdf
ER  - 

TY  - CONF
AU  - Kelliher, D.J.
AU  - Brown, C.
AU  - Ishi, Y.
AU  - Kuriyama, Y.
AU  - Lagrange, J.-B.
AU  - Machida, S.
AU  - Okita, H.
AU  - Prior, C.R.
AU  - Rogers, C.T.
AU  - Sheehy, S.L.
AU  - Uesugi, T.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Longitudinal Tomography in a Scaling FFA
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - 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.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 719
EP  - 722
KW  - synchrotron
KW  - cavity
KW  - experiment
KW  - proton
KW  - injection
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOPRB063
UR  - http://jacow.org/ipac2019/papers/moprb063.pdf
ER  - 

TY  - CONF
AU  - Uesugi, T.
AU  - Fuwa, Y.
AU  - Ishi, Y.
AU  - Kuriyama, Y.
AU  - Mori, Y.
AU  - Okita, H.
AU  - Suga, K.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Study of Beam Injection Efficiency in the Fixed Field Alternating Gradient Synchrotron at KURNS
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - 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.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 2564
EP  - 2566
KW  - injection
KW  - proton
KW  - FFAG
KW  - synchrotron
KW  - acceleration
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEPGW040
UR  - http://jacow.org/ipac2019/papers/wepgw040.pdf
ER  - 

TY  - CONF
AU  - Iwashita, Y.
AU  - Fuwa, Y.
AU  - Geng, R.L.
AU  - Hayano, H.
AU  - Tongu, H.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - High Density Mapping for Superconducting Cavities
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - High density mapping system for superconducting cavities are under development. Testing on the stiffener X-ray mapping system at JLAB showed consistent results in comparison with simultaneously taken GM tube or ion chamber output signals. The system provides better visi-bility as shown by data briefly reported here. In addition to the temperature and the X-ray mapping, a sensitive magnetic field mapping system with high spatial density is also under development. The magnetic field sensor is AF755B, whose operations at cryogenic temperatures are already reported by other group. Our development status using the magnetic field sensor will be reported.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 2860
EP  - 2862
KW  - cavity
KW  - cryogenics
KW  - radiation
KW  - status
KW  - operation
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEPRB025
UR  - http://jacow.org/ipac2019/papers/weprb025.pdf
ER  -