1. Research and Development Group Center for Technology Innovation‐Energy Hitachi Ltd Hitachi‐shi Ibaraki‐ken Japan
2. Graduate School of Biomedical Science and Engineering Hokkaido University Sapporo Hokkaido Japan
3. Division of Quantum Science and Engineering Faculty of Engineering Hokkaido University Sapporo Hokkaido Japan
4. Global Station for Quantum Medical Science and Engineering Global Institution for Collaborative Research and Education (GI‐CoRE) Hokkaido University Sapporo Hokkaido Japan
5. Department of Medical Physics Hokkaido University Hospital Sapporo Hokkaido Japan
6. Department of Radiation Oncology Hokkaido University Hospital Sapporo Hokkaido Japan
7. Department of Radiation Medical Science and Engineering Faculty of Medicine Hokkaido University Sapporo Hokkaido Japan