IPAC2014 - List of Authors (Noda, K.)

Paper	Title	Page
MOPRI080	Measurement of Beam Phase using Phase Probe at the NIRS-930 Cyclotron	794
	S. Hojo, K. Katagiri, M. Nakao, A. Noda, K. Noda, A. Sugiura NIRS, Chiba-shi, Japan T. Honma, A.K. Komiyama, T. Okada, Y. Takahashi AEC, Chiba, Japan
	The NIRS-930 cyclotron of the National Institute of Radiological Sciences (NIRS) has been used for production of short-lived radio-pharmaceuticals for PET, research of physics, developments of particle detectors in space, and so on. The NIRS-930 has twelve trim coils for generation of the isochronous fields. Until recently, currents of the twelve trim coils had been adjusted only by monitoring the beam intensity. In order to exactly produce the isochronous fields, a phase probe has been installed in the NIRS-930. Recent results of beam tests using the phase probe will be presented in the present work.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI080
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MOPRI081	Beam Simulation for Improved Operation of Cyclotron NIRS-930	797
	M. Nakao, S. Hojo, K. Katagiri, A. Noda, K. Noda, A. Sugiura NIRS, Chiba-shi, Japan A. Goto Yamagata University, Yamagata, Japan T. Honma, A.K. Komiyama, T. Okada, Y. Takahashi AEC, Chiba, Japan V.L. Smirnov, S.B. Vorozhtsov JINR, Dubna, Moscow Region, Russia
	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. V.L. Smirnov, S.B. Vorozhtsov, Proc. of RUPAC2012 TUPPB008 325 (2012) ** V.L. Smirnov et al., Proc. of IPAC2012 292 (2012)
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI081
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WEPRO087	Magnetic-field Measurements of Superconducting Magnets for a Heavy-ion Rotating-gantry and Beam-tracking Simulations	2159
	S.S. Suzuki, T. Furukawa, Y. Hara, Y. Iwata, K. Mizushima, S. Mori, K. Noda, T. Shirai, K. Shoda NIRS, Chiba-shi, Japan N. Amemiya Kyoto University, Kyoto, Japan H. Arai, T. Fujimoto AEC, Chiba, Japan T.F. Fujita National Institute of Radiological Sciences, Chiba, Japan Y. Nagamoto, T. Orikasa, S. Takayama, T. Yazawa Toshiba, Tokyo, Japan T. Obana NIFS, Gifu, Japan T. Ogitsu KEK, Ibaraki, Japan
	Manufacture of superconducting rotating-gantry for heavy-ion radiotherapy is currently in progress. This rotating gantry can transport heavy ions having 430 MeV/nucleon to an isocenter with irradiation angles of over 0-360 degrees, and enable advanced radiation-therapy. The three-dimensional scanning-irradiation method is performed in this rotating gantry. Therefore, uniformity of magnetic field is quite important since scanned beams traverse through these superconducting magnets before reaching to the isocenter. In the present work, we precisely measured the magnetic-field distributions of the superconducting magnets for the rotating gantry. We used Hall probes to measure the magnetic field. The magnetic-field distributions were determined by measuring Hall voltage, while moving the Hall probes on a rail, which has the same curvature as a center trajectory of beams. The measured-field distributions were compared with calculated distributions with a three-dimensional electromagnetic-field solver, the OPERA-3D code. Furthermore, beam-tracking simulations were performed by using the measured magnetic-field distributions to verify the design of the superconducting magnets.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRO087
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WEPRO088	Design of Beam Transport Lines for Radioisotope Production Systems in NIRS Cyclotron Facility	2162
	K. Katagiri, S. Hojo, M. Nakao, A. Noda, K. Noda, A. Sugiura, K. Suzuki NIRS, Chiba-shi, Japan
	A new beam transport and a irradiation system were designed for radionuclides production with heat damageable targets. The incident beam is swept along a circle on the irradiation target with fast steering magnets. The width and the sweeping radius of the incident beams were optimized to achieve high production efficiency and avoid the heat damages. Based on those optimized parameters, beam optics of the new beam transport lines was optimized. To obtain initial conditions for the optical calculations, the beam emittance and the Twiss parameters were measured at the upper stream of the new beam transport lines. In this paper, we present the results of the calculations and the optimized beam transport lines.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRO088
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THOAB01	Recent Progress and Future Plan of Heavy-ion Radiotherapy Facility, HIMAC	2812
	K. Noda, T. Furukawa, Y. Hara, Y. Iwata, N. Kanematsu, K. Katagiri, A. Kitagawa, K. Mizushima, S. Mori, T. Murakami, M. Muramatsu, M. Nakao, A. Noda, S. Sato, T. Shirai, E. Takada, Y. Takei NIRS, Chiba-shi, Japan
	The first clinical trial with a carbon-ion beam generated from HIMAC was conducted in June 1994. Based on more than ten years of experience with HIMAC, a pilot facility of a standard carbon-ion radiotherapy facility in Japan, was constructed at Gunma University. Owing to the successfully operation of the pilot facility, Saga-HIMAT and i-ROCK in Kanagawa have been progressed. In addition, NIRS has developed the new treatment research project for the further development of radiotherapy with, based on the pencil-beam 3D scanning for both the static and moving targets. This treatment procedure has been successfully carried out with a pencil-beam 3D scanning since May 2011. Owing to the development of NIRS 3D scanning, the i-ROCK project decided to employ the NIRS 3D scanning. As a future plan, further, NIRS has developed a superconducting rotating gantry, and we are going to just start a study of a superconducting accelerator for the ion radiotherapy. The recent progress and the future plan of HIMAC for the heavy-ion cancer radiotherapy will be reported.
	Slides THOAB01 [10.523 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THOAB01
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Paper

Title

Page

Measurement of Beam Phase using Phase Probe at the NIRS-930 Cyclotron

794

S. Hojo, K. Katagiri, M. Nakao, A. Noda, K. Noda, A. Sugiura
NIRS, Chiba-shi, Japan
T. Honma, A.K. Komiyama, T. Okada, Y. Takahashi
AEC, Chiba, Japan

The NIRS-930 cyclotron of the National Institute of Radiological Sciences (NIRS) has been used for production of short-lived radio-pharmaceuticals for PET, research of physics, developments of particle detectors in space, and so on. The NIRS-930 has twelve trim coils for generation of the isochronous fields. Until recently, currents of the twelve trim coils had been adjusted only by monitoring the beam intensity. In order to exactly produce the isochronous fields, a phase probe has been installed in the NIRS-930. Recent results of beam tests using the phase probe will be presented in the present work.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI080

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOPRI081

Beam Simulation for Improved Operation of Cyclotron NIRS-930

797

M. Nakao, S. Hojo, K. Katagiri, A. Noda, K. Noda, A. Sugiura
NIRS, Chiba-shi, Japan
A. Goto
Yamagata University, Yamagata, Japan
T. Honma, A.K. Komiyama, T. Okada, Y. Takahashi
AEC, Chiba, Japan
V.L. Smirnov, S.B. Vorozhtsov
JINR, Dubna, Moscow Region, Russia

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.
* V.L. Smirnov, S.B. Vorozhtsov, Proc. of RUPAC2012 TUPPB008 325 (2012)
** V.L. Smirnov et al., Proc. of IPAC2012 292 (2012)

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI081

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WEPRO087

Magnetic-field Measurements of Superconducting Magnets for a Heavy-ion Rotating-gantry and Beam-tracking Simulations

2159

S.S. Suzuki, T. Furukawa, Y. Hara, Y. Iwata, K. Mizushima, S. Mori, K. Noda, T. Shirai, K. Shoda
NIRS, Chiba-shi, Japan
N. Amemiya
Kyoto University, Kyoto, Japan
H. Arai, T. Fujimoto
AEC, Chiba, Japan
T.F. Fujita
National Institute of Radiological Sciences, Chiba, Japan
Y. Nagamoto, T. Orikasa, S. Takayama, T. Yazawa
Toshiba, Tokyo, Japan
T. Obana
NIFS, Gifu, Japan
T. Ogitsu
KEK, Ibaraki, Japan

Manufacture of superconducting rotating-gantry for heavy-ion radiotherapy is currently in progress. This rotating gantry can transport heavy ions having 430 MeV/nucleon to an isocenter with irradiation angles of over 0-360 degrees, and enable advanced radiation-therapy. The three-dimensional scanning-irradiation method is performed in this rotating gantry. Therefore, uniformity of magnetic field is quite important since scanned beams traverse through these superconducting magnets before reaching to the isocenter. In the present work, we precisely measured the magnetic-field distributions of the superconducting magnets for the rotating gantry. We used Hall probes to measure the magnetic field. The magnetic-field distributions were determined by measuring Hall voltage, while moving the Hall probes on a rail, which has the same curvature as a center trajectory of beams. The measured-field distributions were compared with calculated distributions with a three-dimensional electromagnetic-field solver, the OPERA-3D code. Furthermore, beam-tracking simulations were performed by using the measured magnetic-field distributions to verify the design of the superconducting magnets.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRO087

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WEPRO088

Design of Beam Transport Lines for Radioisotope Production Systems in NIRS Cyclotron Facility

2162

K. Katagiri, S. Hojo, M. Nakao, A. Noda, K. Noda, A. Sugiura, K. Suzuki
NIRS, Chiba-shi, Japan

A new beam transport and a irradiation system were designed for radionuclides production with heat damageable targets. The incident beam is swept along a circle on the irradiation target with fast steering magnets. The width and the sweeping radius of the incident beams were optimized to achieve high production efficiency and avoid the heat damages. Based on those optimized parameters, beam optics of the new beam transport lines was optimized. To obtain initial conditions for the optical calculations, the beam emittance and the Twiss parameters were measured at the upper stream of the new beam transport lines. In this paper, we present the results of the calculations and the optimized beam transport lines.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRO088

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THOAB01

Recent Progress and Future Plan of Heavy-ion Radiotherapy Facility, HIMAC

2812

K. Noda, T. Furukawa, Y. Hara, Y. Iwata, N. Kanematsu, K. Katagiri, A. Kitagawa, K. Mizushima, S. Mori, T. Murakami, M. Muramatsu, M. Nakao, A. Noda, S. Sato, T. Shirai, E. Takada, Y. Takei
NIRS, Chiba-shi, Japan

The first clinical trial with a carbon-ion beam generated from HIMAC was conducted in June 1994. Based on more than ten years of experience with HIMAC, a pilot facility of a standard carbon-ion radiotherapy facility in Japan, was constructed at Gunma University. Owing to the successfully operation of the pilot facility, Saga-HIMAT and i-ROCK in Kanagawa have been progressed. In addition, NIRS has developed the new treatment research project for the further development of radiotherapy with, based on the pencil-beam 3D scanning for both the static and moving targets. This treatment procedure has been successfully carried out with a pencil-beam 3D scanning since May 2011. Owing to the development of NIRS 3D scanning, the i-ROCK project decided to employ the NIRS 3D scanning. As a future plan, further, NIRS has developed a superconducting rotating gantry, and we are going to just start a study of a superconducting accelerator for the ion radiotherapy. The recent progress and the future plan of HIMAC for the heavy-ion cancer radiotherapy will be reported.

Slides THOAB01 [10.523 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THOAB01

Export •

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