Beam Simulation for Improved Operation of Cyclotron NIRS-930

Nakao, Masao; Goto, Akira; Hojo, Satoru; Honma, Toshihiro; Katagiri, Ken; Komiyama, Akihito; Noda, Akira; Noda, Koji; Okada, Takanori; Smirnov, Victor; Sugiura, Akinori; Takahashi, Yuichi; Vorozhtsov, Sergey

doi:10.18429/JACoW-IPAC2014-MOPRI081

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RIS citation export for MOPRI081: Beam Simulation for Improved Operation of Cyclotron NIRS-930

TY - CONF
AU - Nakao, M.
AU - Goto, A.
AU - Hojo, S.
AU - Honma, T.
AU - Katagiri, K.
AU - Komiyama, A.K.
AU - Noda, A.
AU - Noda, K.
AU - Okada, T.
AU - Smirnov, V.L.
AU - Sugiura, A.
AU - Takahashi, Y.
AU - Vorozhtsov, S.B.
ED - Petit-Jean-Genaz, Christine
ED - Arduini, Gianluigi
ED - Michel, Peter
ED - Schaa, Volker RW
TI - Beam Simulation for Improved Operation of Cyclotron NIRS-930
J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014
C1 - Dresden, Germany
T2 - International Particle Accelerator Conference
T3 - 5
LA - english
AB - Beam simulation using SNOP* code has been performed for the cyclotron NIRS-930 at NIRS in order to study beam dynamics in a cyclotron and to improve beam intensity. Each electric or magnetic field (main coil, trim coils, harmonic coils, magnetic channel, gradient corrector, grazer lens, dee electrode, inflector) were calculated by OPERA-3d, and simulated injection, acceleration, and extraction. The simulation of proton with 30 MeV extracting energy with harmonic 1 was already performed and well simulated RF phase and extraction efficiency**. Then we tried to apply SNOP to 18 MeV protons with harmonic 2. We first formed isochronous magnetic field with main and trim coils for simulating single particle. Next we optimized electric deflector and magnetic channel in order to maximize extracted particles simulating the bunch of particles. Beam loss of the simulation was compared to the experiment. And then we are optimizing position and rotation of inflector and position of puller to improve injection. We intend to apply optimized simulation parameter to actual cyclotron operation to improve beam intensity and quality.
PB - JACoW
CP - Geneva, Switzerland
SP - 797
EP - 799
KW - simulation
KW - cyclotron
KW - injection
KW - experiment
KW - extraction
DA - 2014/07
PY - 2014
SN - 978-3-95450-132-8
DO - 10.18429/JACoW-IPAC2014-MOPRI081
UR - http://jacow.org/ipac2014/papers/mopri081.pdf
ER -