2022 年 19 巻 2 号 p. 78-85
The fourth International School on Beam Dynamics and Accelerator Technology (ISBA21) was held for seven days from February 21 to February 27, 2022. In addition to the regular lectures, student self introductions, a virtual accelerator tour and a virtual excursion were conducted as unique event at the online school. This was the fourth ISBA, and it was a milestone for the parent program, IINAS, which has just terminated. In addition, we would like also to discuss the future of the International Accelerator School.