TUAD2

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URL	https://doi.org/10.18429/JACoW-IPAC2025-TUAD2
Title	Status of the proton linac for boron neutron capture therapy in the iBNCT project
Authors	M. Sato, Z. Fang, Y. Fukui, K. Futatsukawa, K. Ikegami, H. Kobayashi, C. Kubota, T. Kurihara, T. Miura, F. Naito, K. Nanmo, T. Obina, T. Sugimura, A. Takagi High Energy Accelerator Research Organization T. Shibata Japan Proton Accelerator Research Complex, High Energy Accelerator Research Organization H. Kumada, Y. Matsumoto University of Tsukuba S. Tanaka University of Tsukuba, Nippon Advanced Technology Co., Ltd. N. Nagura Nihon Advanced Technology Co., Ltd, NAT Corporation T. Ohba NAT Corporation, Nippon Advanced Technology Co., Ltd. T. Toyoshima ATOX H. Oguri Japan Proton Accelerator Research Complex
Abstract	Accelerator-based boron neutron capture therapy (BNCT) has been studied worldwide for a novel cancer therapy using neutrons generated by an accelerator system. The iBNCT (Ibaraki BNCT) project began in collaboration with KEK, the University of Tsukuba, Ibaraki Prefecture, and private companies in Japan. The iBNCT project aims to realize linac-based BNCT with a compact and low-activation accelerator system based on the design and experiences of the J-PARC linac. It consists of an H+ ECR ion source, a 3-MeV RFQ, an 8-MeV Alvarez-DTL, and a beryllium neutron-generation target. Since a high neutron flux is required for the BNCT treatment, an average beam current of more than 1 mA is necessary with the combination of the 8-MeV proton and the beryllium target. By improving the vacuum, cooling water and low-level RF system, stable operation was achieved with an average beam current of 2 mA. After completion of the non-clinical studies in parallel with neutron beam characteristic measurements, the iBNCT project has started a clinical study in January 2024. In this contribution, the present status together with the conducted upgrade and prospects of the iBNCT accelerator will be presented.
Paper	download: TUAD2.pdf
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Conference	16th International Particle Accelerator Conference
Series
Location	Taipei, Taiwan
Date	01-06 Jun 2025
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	* Ming-Chyuan Lin - National Synchrotron Radiation Research Center * Yoichi Sato - KEK * Jui-Che Huang - National Synchrotron Radiation Research Center * David Button - Australian Nuclear Science and Technology Organisation * Ping-Shun Chuang - National Synchrotron Radiation Research Center
Online ISBN	978-3-95450-248-6
Online ISSN	2673-5490
Received	28 May 2025
Revised	04 June 2025
Accepted	05 June 2025
Issued	05 November 2025
DOI	10.18429/JACoW-IPAC2025-TUAD2
Pages	858-861
Copyright	Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.