Cyclotrons2019 - List of Authors (Tsutsui, H.)

Paper	Title	Page
TUP024	Muon Cyclotron for Transmission Muon Microscope	208
	T. Yamazaki, Y. Nagatani KEK, Tokai Branch, Tokai, Naka, Ibaraki, Japan T. Adachi, Y. Miyake KEK, Tokai, Ibaraki, Japan A. Goto, J. Ohnishi RIKEN Nishina Center, Wako, Japan Y. Kumata, S. Kusuoka, T. Onda, H. Tsutsui SHI, Tokyo, Japan
	Funding: This work is supported by JSPS KAKENHI Grant Numbers JP17H06126 and JP19H05194. A transmission muon microscope is an unprecedented tool which enables its users to reconstruct 3D image of samples such as a living cell. Muons can gain penetrative power as their energy increase, though electrons above 1 MeV start to trigger electromagnetic showers and protons above 1 GeV cause nuclear reactions. Muons accelerated up to about 5 MeV are able to penetrate a living cell (~ 10 um), which is impossible with ultra-high voltage (1 MeV) electron microscopes. In order to accelerate muons, efficient acceleration is necessary because the lifetime of muons is only 2.2 us. In addition, it is important to accelerate muons without increasing their energy dispersion. A cyclotron with a flat-top acceleration system is the best suited for the transmission muon microscope and is being developed at the J-PARC muon facility (MUSE). In this poster, the transmission muon microscope project and the development of the muon cyclotron will be presented.
	Poster TUP024 [1.366 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUP024
About •	paper received ※ 14 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020
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TUP035	Development of a Center Region for New Sumitomo Cyclotron	240
	N. Kamiguchi, M. Hirabayashi, J. Kanakura, Y. Kumata, Y. Mikami, H. Murata, H. Oda, T. Tachikawa, T. Takahashi, T. Tsurudome, H. Tsutsui, J.Y. Yoshida SHI, Kanagawa, Japan
	We, Sumitomo Heavy Industries, Ltd., have been developing a new AVF cyclotron which employs a super-conducting magnet. This cyclotron purposes proton therapy fields and is most compact and high intensity among AVF cyclotrons which can accelerate to 230 MeV. In this paper we report and focus on its center region. The center region consists of bellows. The PIG ion source with hot cathode is located at the center of the cyclotron. As this cyclotron has 3 T magnetic field, the filament receives the Lorentz force strongly. To avoid the filament deformation, AC current heating is newly introduced into this ion source. The over 40 µA output have been already confirmed in our test bench. The extraction of the proton beam is conducted with an RF electric field. On one counter dee electrode a beam chopper is equipped and on the other counter dee electrode, phase slits, a pair of vertical beam dumpers and a beam probe are equipped. To control the beam current, static electric beam choppers deflect the beam direction vertically. C-H coils are put on outside of the center region in the valley. In this paper, the concept of the center region of this new cyclotron will be discussed.
	Poster TUP035 [1.416 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUP035
About •	paper received ※ 13 September 2019 paper accepted ※ 26 September 2019 issue date ※ 20 June 2020
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FRA02	Current Status of Sumitomo’s Superconducting Cyclotron Development for Proton Therapy	340
	H. Tsutsui, Y. Arakawa, Y. Ebara, A. Hashimoto, M. Hirabayashi, T. Hirayama, N. Kamiguchi, J. Kanakura, Y. Kumata, Y. Mikami, H. Mitsubori, T. Miyashita, T. Morie, H. Murata, H. Oda, H. Ookubo, T. Sakemi, M. Sano, T. Tachikawa, T. Takahashi, K. Taki, T. Tsurudome, T. Watanabe, J.Y. Yoshida SHI, Kanagawa, Japan
	Sumitomo Heavy Industries, Ltd. is developing a com-pact superconducting isochronous 230 MeV cyclotron for proton therapy. It is designed to produce 1000 nA proton beams for high dose rate cancer treatment. The cyclotron magnet, which includes a liquid-helium-free cryostat, has been fabricated and the magnetic field has been measured. Magnetic field distribution and pa-rameters such as horizontal and vertical tunes agreed well with the original design. A 120 kW solid-state RF system is being tested. Other components such as the ion source and electrostatic deflector are being fabricated. After the testing of individual components, they will be assembled and beam testing will be scheduled at a new test site.
	Slides FRA02 [8.556 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-FRA02
About •	paper received ※ 13 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Muon Cyclotron for Transmission Muon Microscope

208

T. Yamazaki, Y. Nagatani
KEK, Tokai Branch, Tokai, Naka, Ibaraki, Japan
T. Adachi, Y. Miyake
KEK, Tokai, Ibaraki, Japan
A. Goto, J. Ohnishi
RIKEN Nishina Center, Wako, Japan
Y. Kumata, S. Kusuoka, T. Onda, H. Tsutsui
SHI, Tokyo, Japan

Funding: This work is supported by JSPS KAKENHI Grant Numbers JP17H06126 and JP19H05194.
A transmission muon microscope is an unprecedented tool which enables its users to reconstruct 3D image of samples such as a living cell. Muons can gain penetrative power as their energy increase, though electrons above 1 MeV start to trigger electromagnetic showers and protons above 1 GeV cause nuclear reactions. Muons accelerated up to about 5 MeV are able to penetrate a living cell (~ 10 um), which is impossible with ultra-high voltage (1 MeV) electron microscopes. In order to accelerate muons, efficient acceleration is necessary because the lifetime of muons is only 2.2 us. In addition, it is important to accelerate muons without increasing their energy dispersion. A cyclotron with a flat-top acceleration system is the best suited for the transmission muon microscope and is being developed at the J-PARC muon facility (MUSE). In this poster, the transmission muon microscope project and the development of the muon cyclotron will be presented.

Poster TUP024 [1.366 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUP024

About •

paper received ※ 14 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020

Export •

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

TUP035

Development of a Center Region for New Sumitomo Cyclotron

240

N. Kamiguchi, M. Hirabayashi, J. Kanakura, Y. Kumata, Y. Mikami, H. Murata, H. Oda, T. Tachikawa, T. Takahashi, T. Tsurudome, H. Tsutsui, J.Y. Yoshida
SHI, Kanagawa, Japan

We, Sumitomo Heavy Industries, Ltd., have been developing a new AVF cyclotron which employs a super-conducting magnet. This cyclotron purposes proton therapy fields and is most compact and high intensity among AVF cyclotrons which can accelerate to 230 MeV. In this paper we report and focus on its center region. The center region consists of bellows. The PIG ion source with hot cathode is located at the center of the cyclotron. As this cyclotron has 3 T magnetic field, the filament receives the Lorentz force strongly. To avoid the filament deformation, AC current heating is newly introduced into this ion source. The over 40 µA output have been already confirmed in our test bench. The extraction of the proton beam is conducted with an RF electric field. On one counter dee electrode a beam chopper is equipped and on the other counter dee electrode, phase slits, a pair of vertical beam dumpers and a beam probe are equipped. To control the beam current, static electric beam choppers deflect the beam direction vertically. C-H coils are put on outside of the center region in the valley. In this paper, the concept of the center region of this new cyclotron will be discussed.

Poster TUP035 [1.416 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUP035

About •

paper received ※ 13 September 2019 paper accepted ※ 26 September 2019 issue date ※ 20 June 2020

Export •

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

FRA02

Current Status of Sumitomo’s Superconducting Cyclotron Development for Proton Therapy

340

H. Tsutsui, Y. Arakawa, Y. Ebara, A. Hashimoto, M. Hirabayashi, T. Hirayama, N. Kamiguchi, J. Kanakura, Y. Kumata, Y. Mikami, H. Mitsubori, T. Miyashita, T. Morie, H. Murata, H. Oda, H. Ookubo, T. Sakemi, M. Sano, T. Tachikawa, T. Takahashi, K. Taki, T. Tsurudome, T. Watanabe, J.Y. Yoshida
SHI, Kanagawa, Japan

Sumitomo Heavy Industries, Ltd. is developing a com-pact superconducting isochronous 230 MeV cyclotron for proton therapy. It is designed to produce 1000 nA proton beams for high dose rate cancer treatment. The cyclotron magnet, which includes a liquid-helium-free cryostat, has been fabricated and the magnetic field has been measured. Magnetic field distribution and pa-rameters such as horizontal and vertical tunes agreed well with the original design. A 120 kW solid-state RF system is being tested. Other components such as the ion source and electrostatic deflector are being fabricated. After the testing of individual components, they will be assembled and beam testing will be scheduled at a new test site.

Slides FRA02 [8.556 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-FRA02

About •

paper received ※ 13 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020

Export •

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