CYCLOTRONS 2010 - List of Authors (Mitsumoto, T.)

Paper

Title

Page

BNCT System Using 30 MeV H⁻ Cyclotron

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	Page
FRM2CCO04	BNCT System Using 30 MeV H⁻ Cyclotron	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]