CYCLOTRONS 2010 - List of Keywords (beam-transport)

Paper	Title	Other Keywords	Page
MOPCP031	Physics Design and Calculation of CYCIAE-70 Extraction System	extraction, proton, cyclotron, target	114
	S. An, F.P. Guan, M. Li, G.F. Song, C. Wang, S.M. Wei, F. Yang, T.J. Zhang, J.Q. Zhong CIAE, Beijing, People's Republic of China
	A cyclotron functioning as a driver with beam power of 50kW (70 MeV, 0.75 mA) based on compact H⁻ cyclotron, CYCIAE-70, has been designed at CIAE in Beijing for the RIB production and application in the field of nuclear medicine recently. CYCIAE-70 is designed to be a dual particle cyclotron capable of delivering proton with energy in the range 35~70 MeV and deuteron beam with energy in a range of about 18~33 MeV. About 700 μA for H⁺ and 40 μA for D⁺ will be extracted in dual opposite directions by charge exchange stripping devices and the extraction beam energy is continuously adjustable. The physics design of CYCIAE-70 stripping system has been done and the optics calculations for the extraction proton and deuteron beam have been finished. The dispersion effects for the extracted beam are analyzed and the beam parameters after extraction are calculated with multi-particle tracking code COMA.

MOPCP094	Consistency in Measurement of Beam Phase and Beam Intensity Using Lock-in Amplifier and Oscilloscope Systems	cyclotron, monitoring, acceleration, rfq	245
	R. Koyama, M. Fujimaki, N. Fukunishi, A. Goto, M. Hemmi, O. Kamigaito, M. Kase, N. Sakamoto, K. Suda, T. Watanabe, K. Yamada RIKEN Nishina Center, Wako, Japan
	The RIKEN RI beam factory (RIBF) consists of four ring cyclotrons (RRC, fRC, IRC, and SRC) and two injectors (RILAC and AVF) which are all connected in cascade. RILAC, AVF, and RRC began operation in the 1980s, and fRC, IRC, and SRC were installed in 2006. Phase probes (PPs) are installed in all cyclotrons and beam transport lines of RIBF, and the beam-bunch signals that are detected nondestructively by these PPs are used for tuning of isochronous magnetic field of cyclotrons and for monitoring the beam phase and beam intensity. We mainly use a newly developed system that incorporates a lock-in amplifier (LIA; SR844, SRS) for those tuning and monitoring; however, in AVF and RRC, a conventional measurement method using an oscilloscope system (OSC; DSO6052A, Agilent) is used. In this study, we investigated the consistency in the measurements carried out using LIA and OSC systems by Fourier analyzing the observed data. Additionally, we investigated the resolution and measurement uncertainty of LIA and OSC.

FRM2CCO04	BNCT System Using 30 MeV H⁻ Cyclotron	cyclotron, target, proton, injection	430
	T. Mitsumoto, K. Fujita, T. Ogasawara, H. Tsutsui, S. Yajima SHI, Tokyo, Japan A. Maruhashi, Y. Sakurai, H. Tanaka KURRI, Osaka, Japan
	Kyoto University and Sumitomo Heavy Industries, Ltd. have developed an accelerator-based neutron source for Boron Neutron Capture Therapy (BNCT) at the Kyoto University Research Reactor Institute (KURRI). In order to obtain 10⁹ n/cm²/sec epithermal neutron for cancer treatment, a newly designed 30 MeV H⁻ AVF cyclotron named HM-30 was constructed and is being operated. With newly developed spiral inflector, the beam current in the central region can exceed 2 mA. The cyclotron is operated stably at 1 mA owing to the limit of the facility. Extracted proton beam is expanded by two scanner magnets in order to moderate heat concentration on the beryllium target, which is directly cooled by water to endure 30 kW heat load. Mainly fast neutrons are emitted from the target, and moderated to epithermal region by a moderator which consists of lead, iron, polyethylene, etc. Thermal neutron flux in a water phantom is measured by gold wire, which is consistent with the calculation using MCNPX. Preclinical studies have been continued with 10B-p-Borono- phenylalanine.
	Slides FRM2CCO04 [1.818 MB]

Paper

Title

Other Keywords

Page

MOPCP031

Physics Design and Calculation of CYCIAE-70 Extraction System

extraction, proton, cyclotron, target

114

S. An, F.P. Guan, M. Li, G.F. Song, C. Wang, S.M. Wei, F. Yang, T.J. Zhang, J.Q. Zhong
CIAE, Beijing, People's Republic of China

A cyclotron functioning as a driver with beam power of 50kW (70 MeV, 0.75 mA) based on compact H⁻ cyclotron, CYCIAE-70, has been designed at CIAE in Beijing for the RIB production and application in the field of nuclear medicine recently. CYCIAE-70 is designed to be a dual particle cyclotron capable of delivering proton with energy in the range 35~70 MeV and deuteron beam with energy in a range of about 18~33 MeV. About 700 μA for H⁺ and 40 μA for D⁺ will be extracted in dual opposite directions by charge exchange stripping devices and the extraction beam energy is continuously adjustable. The physics design of CYCIAE-70 stripping system has been done and the optics calculations for the extraction proton and deuteron beam have been finished. The dispersion effects for the extracted beam are analyzed and the beam parameters after extraction are calculated with multi-particle tracking code COMA.

MOPCP094

Consistency in Measurement of Beam Phase and Beam Intensity Using Lock-in Amplifier and Oscilloscope Systems

cyclotron, monitoring, acceleration, rfq

245

R. Koyama, M. Fujimaki, N. Fukunishi, A. Goto, M. Hemmi, O. Kamigaito, M. Kase, N. Sakamoto, K. Suda, T. Watanabe, K. Yamada
RIKEN Nishina Center, Wako, Japan

The RIKEN RI beam factory (RIBF) consists of four ring cyclotrons (RRC, fRC, IRC, and SRC) and two injectors (RILAC and AVF) which are all connected in cascade. RILAC, AVF, and RRC began operation in the 1980s, and fRC, IRC, and SRC were installed in 2006. Phase probes (PPs) are installed in all cyclotrons and beam transport lines of RIBF, and the beam-bunch signals that are detected nondestructively by these PPs are used for tuning of isochronous magnetic field of cyclotrons and for monitoring the beam phase and beam intensity. We mainly use a newly developed system that incorporates a lock-in amplifier (LIA; SR844, SRS) for those tuning and monitoring; however, in AVF and RRC, a conventional measurement method using an oscilloscope system (OSC; DSO6052A, Agilent) is used. In this study, we investigated the consistency in the measurements carried out using LIA and OSC systems by Fourier analyzing the observed data. Additionally, we investigated the resolution and measurement uncertainty of LIA and OSC.

FRM2CCO04

BNCT System Using 30 MeV H⁻ Cyclotron

cyclotron, target, proton, injection

430

T. Mitsumoto, K. Fujita, T. Ogasawara, H. Tsutsui, S. Yajima
SHI, Tokyo, Japan
A. Maruhashi, Y. Sakurai, H. Tanaka
KURRI, Osaka, Japan

Kyoto University and Sumitomo Heavy Industries, Ltd. have developed an accelerator-based neutron source for Boron Neutron Capture Therapy (BNCT) at the Kyoto University Research Reactor Institute (KURRI). In order to obtain 10⁹ n/cm²/sec epithermal neutron for cancer treatment, a newly designed 30 MeV H⁻ AVF cyclotron named HM-30 was constructed and is being operated. With newly developed spiral inflector, the beam current in the central region can exceed 2 mA. The cyclotron is operated stably at 1 mA owing to the limit of the facility. Extracted proton beam is expanded by two scanner magnets in order to moderate heat concentration on the beryllium target, which is directly cooled by water to endure 30 kW heat load. Mainly fast neutrons are emitted from the target, and moderated to epithermal region by a moderator which consists of lead, iron, polyethylene, etc. Thermal neutron flux in a water phantom is measured by gold wire, which is consistent with the calculation using MCNPX. Preclinical studies have been continued with 10B-p-Borono- phenylalanine.

Slides FRM2CCO04 [1.818 MB]