HIAT2015 - List of Authors (Maie, T.)

Paper	Title	Page
MOPA04	New High-energy Beam Transport Line Dedicated to Biological Applications in RIKEN RI Beam Factory	42
	N. Fukunishi, T. Abe, M. Fujimaki, T. Hirano, M. Komiyama, K. Kumagai, T. Maie, Y. Watanabe RIKEN Nishina Center, Wako, Japan
	RIKEN RI Beam Factory is one of the world-leading heavy-ion facilities where nuclear physics research and application research have been conducted. One important application, performed more than twenty years at RIBF, is breeding plants and others where energetic heavy ions are used as very effective mutagens. Our previous main accelerator RIKEN Ring Cyclotron has been used for this purpose but available beam energies and resultant ion ranges are limited for medium heavy ions such as argon and iron ions. Hence, a new beam transport line delivering beams accelerated by one of our new-generation cyclotrons, RIKEN Intermediate Ring Cyclotron, to E5H experimental vault, where biological samples are irradiated in air, has been constructed. We will report design of the new beam line and the results obtained by the beam-commissioning test performed using a 160 MeV/nucleon argon beam in January 2015. We obtained performances as designed, for example, nearly 100% transmission efficiency, and a threefold increase of ion ranges. The higher-energy argon beam delivered by the new beam line was used to induce seaweed mutations immediately after the beam test.
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MOPA09	RIKEN Ring Cyclotron (RRC)	54
	Y. Watanabe, M. Fujimaki, N. Fukunishi, E. Ikezawa, O. Kamigaito, M. Kase, K. Kumagai, T. Maie, J. Ohnishi, H. Okuno, K. Ozeki, N. Sakamoto, K. Suda, S. Watanabe, K. Yamada RIKEN Nishina Center, Wako, Japan S. Fukuzawa, M. Hamanaka, S. Ishikawa, K. Kobayashi, R. Koyama, T. Nakamura, M. Nishida, M. Nishimura, J. Shibata, N. Tsukiori, K. Yadomi SHI Accelerator Service Ltd., Tokyo, Japan
	The RIKEN Ring Cyclotron (RRC) has been in stable operation over 28 years, and has been used for supplying many types of heavy-ion beams for various experiments. Since 2007, it has also been used for supplying beams to the three Ring Cyclotrons at the Radioactive Isotope Beam Factory (RIBF). The RRC has three types of injectors: the AVF cyclotron for comparatively light ions, variable-frequency linac for heavy-ions (RILAC), and the RIKEN Heavy-ions Linac 2 (RILAC2) for using high-intensity very-heavy ions. The total operation time of the RRC is more than 4000 h/year. Recently, some problems caused by age-related deterioration have often been occurring in the RRC. Some main coils of sector magnets had a sign of layer short. Two Magnetic Deflection Channels and some electrodes of Electrostatic Deflection Channel were damaged by some beam-loss. Several leaks of vacuum have happened at a feed-through of trim coils in the E-sector, at a bellows between the Resonator No.2 and the S-sector magnet, and at some copper cooling water pipes in the Resonator No.1 and the Resonator No.2. These present statuses of the RRC are presented in this paper.
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MOPA12	Status Report of the Operation of the RIKEN AVF Cyclotron	65
	K. Suda, M. Fujimaki, N. Fukunishi, T. Kageyama, O. Kamigaito, M. Kase, M. Komiyama, K. Kumagai, T. Maie, M. Nagase, T. Nagatomo, T. Nakagawa, H. Okuno, N. Sakamoto, A. Uchiyama, T. Watanabe, Y. Watanabe, K. Yamada RIKEN Nishina Center, Wako, Japan S. Fukuzawa, M. Hamanaka, S. Ishikawa, K. Kobayashi, R. Koyama, T. Nakamura, M. Nishida, M. Nishimura, J. Shibata, N. Tsukiori, K. Yadomi SHI Accelerator Service Ltd., Tokyo, Japan Y. Kotaka, Y. Ohshiro, S. Yamaka CNS, Saitama, Japan
	The RIKEN AVF cyclotron was commissioned in 1989. Since then, it has been operated as an injector for the RIKEN ring cyclotron. The AVF cyclotron also provides low energy ion beams for the Radio-Isotope Beam separator (CRIB) of the Center for Nuclear Study (CNS), the University of Tokyo, as well as to produce RIs for commercial use. The operating time is more than 3,000 hours per year. We will report the operating status (nuclear species, energy, supply destination of accelerated ions), troubles, maintenance work, and the improvement of ion sources and diagnostics tools for the period from August 2014 to July 2015.
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WEPB01	Status Report on the Operation of the RIBF Ring Cyclotrons	191
	K. Ozeki, T. Dantsuka, M. Fujimaki, T. Fujinawa, N. Fukunishi, H. Hasebe, Y. Higurashi, E. Ikezawa, H. Imao, T. Kageyama, O. Kamigaito, M. Kase, M. Kidera, M. Komiyama, K. Kumagai, T. Maie, M. Nagase, T. Nagatomo, T. Nakagawa, M. Nakamura, J. Ohnishi, H. Okuno, N. Sakamoto, K. Suda, A. Uchiyama, S. Watanabe, T. Watanabe, Y. Watanabe, K. Yamada, H. Yamasawa RIKEN Nishina Center, Wako, Japan S. Fukuzawa, M. Hamanaka, S. Ishikawa, K. Kobayashi, R. Koyama, T. Nakamura, M. Nishida, M. Nishimura, J. Shibata, N. Tsukiori, K. Yadomi SHI Accelerator Service Ltd., Tokyo, Japan Y. Kotaka CNS, Saitama, Japan
	Operational status of four ring cyclotrons (RRC, fRC, IRC, SRC) from August 2014 to July 2015 is reported. We are engaging in the improvements and adjustments for increasing beam intensities year after year, and maintenances for the stabilization of beam supply. In these contributions, we will report the past performances of accelerated beams, statistics of operational and tuning time on corresponding period, as well as failures and copings with them.
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Paper

Title

Page

New High-energy Beam Transport Line Dedicated to Biological Applications in RIKEN RI Beam Factory

42

N. Fukunishi, T. Abe, M. Fujimaki, T. Hirano, M. Komiyama, K. Kumagai, T. Maie, Y. Watanabe
RIKEN Nishina Center, Wako, Japan

RIKEN RI Beam Factory is one of the world-leading heavy-ion facilities where nuclear physics research and application research have been conducted. One important application, performed more than twenty years at RIBF, is breeding plants and others where energetic heavy ions are used as very effective mutagens. Our previous main accelerator RIKEN Ring Cyclotron has been used for this purpose but available beam energies and resultant ion ranges are limited for medium heavy ions such as argon and iron ions. Hence, a new beam transport line delivering beams accelerated by one of our new-generation cyclotrons, RIKEN Intermediate Ring Cyclotron, to E5H experimental vault, where biological samples are irradiated in air, has been constructed. We will report design of the new beam line and the results obtained by the beam-commissioning test performed using a 160 MeV/nucleon argon beam in January 2015. We obtained performances as designed, for example, nearly 100% transmission efficiency, and a threefold increase of ion ranges. The higher-energy argon beam delivered by the new beam line was used to induce seaweed mutations immediately after the beam test.

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reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)

MOPA09

RIKEN Ring Cyclotron (RRC)

54

Y. Watanabe, M. Fujimaki, N. Fukunishi, E. Ikezawa, O. Kamigaito, M. Kase, K. Kumagai, T. Maie, J. Ohnishi, H. Okuno, K. Ozeki, N. Sakamoto, K. Suda, S. Watanabe, K. Yamada
RIKEN Nishina Center, Wako, Japan
S. Fukuzawa, M. Hamanaka, S. Ishikawa, K. Kobayashi, R. Koyama, T. Nakamura, M. Nishida, M. Nishimura, J. Shibata, N. Tsukiori, K. Yadomi
SHI Accelerator Service Ltd., Tokyo, Japan

The RIKEN Ring Cyclotron (RRC) has been in stable operation over 28 years, and has been used for supplying many types of heavy-ion beams for various experiments. Since 2007, it has also been used for supplying beams to the three Ring Cyclotrons at the Radioactive Isotope Beam Factory (RIBF). The RRC has three types of injectors: the AVF cyclotron for comparatively light ions, variable-frequency linac for heavy-ions (RILAC), and the RIKEN Heavy-ions Linac 2 (RILAC2) for using high-intensity very-heavy ions. The total operation time of the RRC is more than 4000 h/year. Recently, some problems caused by age-related deterioration have often been occurring in the RRC. Some main coils of sector magnets had a sign of layer short. Two Magnetic Deflection Channels and some electrodes of Electrostatic Deflection Channel were damaged by some beam-loss. Several leaks of vacuum have happened at a feed-through of trim coils in the E-sector, at a bellows between the Resonator No.2 and the S-sector magnet, and at some copper cooling water pipes in the Resonator No.1 and the Resonator No.2. These present statuses of the RRC are presented in this paper.

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MOPA12

Status Report of the Operation of the RIKEN AVF Cyclotron

65

K. Suda, M. Fujimaki, N. Fukunishi, T. Kageyama, O. Kamigaito, M. Kase, M. Komiyama, K. Kumagai, T. Maie, M. Nagase, T. Nagatomo, T. Nakagawa, H. Okuno, N. Sakamoto, A. Uchiyama, T. Watanabe, Y. Watanabe, K. Yamada
RIKEN Nishina Center, Wako, Japan
S. Fukuzawa, M. Hamanaka, S. Ishikawa, K. Kobayashi, R. Koyama, T. Nakamura, M. Nishida, M. Nishimura, J. Shibata, N. Tsukiori, K. Yadomi
SHI Accelerator Service Ltd., Tokyo, Japan
Y. Kotaka, Y. Ohshiro, S. Yamaka
CNS, Saitama, Japan

The RIKEN AVF cyclotron was commissioned in 1989. Since then, it has been operated as an injector for the RIKEN ring cyclotron. The AVF cyclotron also provides low energy ion beams for the Radio-Isotope Beam separator (CRIB) of the Center for Nuclear Study (CNS), the University of Tokyo, as well as to produce RIs for commercial use. The operating time is more than 3,000 hours per year. We will report the operating status (nuclear species, energy, supply destination of accelerated ions), troubles, maintenance work, and the improvement of ion sources and diagnostics tools for the period from August 2014 to July 2015.

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reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)

WEPB01

Status Report on the Operation of the RIBF Ring Cyclotrons

191

K. Ozeki, T. Dantsuka, M. Fujimaki, T. Fujinawa, N. Fukunishi, H. Hasebe, Y. Higurashi, E. Ikezawa, H. Imao, T. Kageyama, O. Kamigaito, M. Kase, M. Kidera, M. Komiyama, K. Kumagai, T. Maie, M. Nagase, T. Nagatomo, T. Nakagawa, M. Nakamura, J. Ohnishi, H. Okuno, N. Sakamoto, K. Suda, A. Uchiyama, S. Watanabe, T. Watanabe, Y. Watanabe, K. Yamada, H. Yamasawa
RIKEN Nishina Center, Wako, Japan
S. Fukuzawa, M. Hamanaka, S. Ishikawa, K. Kobayashi, R. Koyama, T. Nakamura, M. Nishida, M. Nishimura, J. Shibata, N. Tsukiori, K. Yadomi
SHI Accelerator Service Ltd., Tokyo, Japan
Y. Kotaka
CNS, Saitama, Japan

Operational status of four ring cyclotrons (RRC, fRC, IRC, SRC) from August 2014 to July 2015 is reported. We are engaging in the improvements and adjustments for increasing beam intensities year after year, and maintenances for the stabilization of beam supply. In these contributions, we will report the past performances of accelerated beams, statistics of operational and tuning time on corresponding period, as well as failures and copings with them.

Export •

reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)