| 年度 | 会合名 | 開催地 | 参加者 |
| 2016 | 2nd International Symposium on Heavy-Ion Radiotherapy and Advanced Technology | 東京都 | 140 |
| The 15th International Conference on X-Ray Lasers | 奈良県 | 150 | |
| Expert Workshop on Radiation Monitoring for Protection of the Public after Major Radioactive Releases to the Environment: Feedback from the Accident at the Fukushima Daiichi NPS | 千葉県 | 50 | |
| 2017 | The Alliance for the Next Generation MRI & Contrast Agents in QST | 東京都 | 140 |
| The Council of Carbon-ion Radiotherapy Facility Founders in Japan | 東京都 | 210 | |
| 1st QST International Symposium “Quantum Life Science” | 千葉県 | 320 | |
| Joshikai for Future Scientists: International Mentoring Workshop in Science and Engineering | 千葉県 | 100 | |
| 13th International Workshop on Beryllium Technology | 千葉県 | 35 | |
| The 19th International Workshop of Ceramic Breeder Blanket Interactions | 京都府 | 31 | |
| 2018 | Joint Meeting of US-Japan MHD Workshop “Toward development of integrated studies of 3D magnetic field effects in fusion devices” 31st ITPA MHD Disruption and Control Topical Group | 茨城県 | 60 |
| 2nd QST International Symposium | 奈良県 | 250 | |
| The 3rd International Symposium for MRI Alliance, QST | 東京都 | 100 | |
| International Open Laboratory Symposium 2018 | 千葉県 | 80 | |
| ICRP-QST-RERF Workshop on Individual Response to Ionizing Radiation | 東京都 | 80 | |
| 2019 | 3rd QST International Symposium | 奈良県 | 208 |
| ICRP-QST Symposium on Radiological Protection of People and the Environment in the Event of a Large Nuclear Accident | 東京都 | 95 | |
| The 4th International Symposium for MRI Alliance, QST | 千葉県 | 88 | |
| IAEA workshop on engineering design of waste water treatment using radiation grafted adsorbent in RAS/1/023 (Developing and upscaling of radiation grafted materials for water treatment) | 群馬県 | 25 | |
| 2020 | 64th IAEA General Conference Virtual Side Event “Accelerated Progress of Radiation Oncology” | 千葉県 | 285 |
| 4th QST International Symposium | 群馬県 | 365 | |
| 2021 | 5th QST International Symposium | 千葉県 | 205 |
| 4th International Forum on Quantum Metrology & Sensing(IFQMS) |
東京都 千葉県 |
250 | |
| 2022 | The 6th QST International Symposium |
東京 オンライン |
318 |
| 41st Meeting of the ITPA Topical Group on Diagnostics | オンライン | 170 | |
| 2023 | The 79th Fujihara Seminar: Prospects for High Field Science | 兵庫県 | 58 |
| 宮城県 | 113 | ||
| 7th International Symposium on the System of Radiological Protection |
東京 オンライン |
592 | |
| 2024 | 群馬県 |
260 |
|
| 19th International Workshop on H-mode Physics and Transport Barrier (H-mode WS 2024) | 茨城県 | 54 | |
| 8th QST International Symposium | 青森県 | 198 | |
| International Training Course on Carbon Ion Radiotherapy (ITCCIR 2024) | 千葉県・群馬県 | 76 | |
| The 33rd Broader Approach Steering Committee | 青森県 | 50 |