Sep 20 – 24, 2021
America/Vancouver timezone

Concept Design of New Compact Electron Cyclotron Resonance Ion Source with Permanent Magnets for Multi-Ion Radiotherapy

Not scheduled
20m
Poster Applications and related technologies Poster Session 2

Speaker

Masayuki Muramatsu (National Institutes for Quantum and Radiological Science and Technology)

Description

The multi-ion radiotherapy with dose distribution and Liner Energy Transfer optimization is being studied at QST. Helium, carbon, oxygen and neon ions are considered as ion species for multi-ion therapy. Requirement values of beam current were 940 µA correspond to He$^2$+, 290 µA to C$^4$+, 330 µA to O$^6$+, and 245 µA to Ne7+, respectively. We performed some beam tests for design of a new compact ion source with the existing 18 GHz NIRS-HEC. From the results of the beam tests, we estimate the mirror magnetic field of NIRS-HEC. Then, the structure of the permanent magnets for new ECR ion source is determined so that they reproduce the values of the upstream mirror peak (Binj), B minimum (Bmin) and the downstream mirror peak (Bext) at the NIRS-HEC. The magnetic field of Binj, Bmin and Bext at NIRS-HEC were 1.14 T, 0.475 T and 0.9 T, respectively. We will describe about the beam tests with the NIRS-HEC and design of the new compact ECR ion source.

E-mail for contact person muramatsu.masayuki@qst.go.jp

Primary author

Masayuki Muramatsu (National Institutes for Quantum and Radiological Science and Technology)

Co-authors

Mr Fumnihisa Ouchi (Accelerator Engineering Corporation) Taku Suzuki (Accelerator Engineering Corporation) Mr Katsuyuki Takahashi (Accelerator Engineering Corporation) Mr Toshinobu Sasano (Accelerator Engineering Corporation) Mr Tadahiro Shiraishi (Accelerator Engineering Corporation) Dr Shinji Nomura (Sumitomo Heavy Industries) NOBUAKI TAKAHASHI (Sumitomo Heavy Industries) Yushi Kato (Osaka Univ.) Dr Ken Katagiri (National Institutes for Quantum and Radiological Science and Technology) Kota Mizushima (National Institutes for Quantum and Radiological Science and Technology) Dr Yoshiyuki Iwata (National Institutes for Quantum and Radiological Science and Technology) Dr Taku Inaniwa (National Institutes for Quantum and Radiological Science and Technology) Atsushi Kitagawa (National Institutes for Quantum and Radiological Science and Te)

Presentation materials