Abstract
This paper depicts a part of the development of particle physics in Japan after the Second World War. treating the relationship between the establishment of the Yukawa Hall (YH) and the activities of the "Soryushiron Group (SG)." The YH opened as an institute for theoretical physics at Kyoto University in August 1952 in commemoration of Hideki Yukawa's winning of the Nobel Prize in Physics for 1949. The SG was organized mainly as a society of the Japanese young researchers of particle physics in April 1952. Although the previous related studies have argued that the idea of the establishment of YH was deeply connected with the mind of SG. this paper reconsiders how the members of SG worked on the start of YH. who were the main actors of SG in the process of establishing YH, and what these actors did in the formation of YH. Finally it concludes that the different generations of SG represented by "Bosses" and "Young Researchers" played the different roles, preparing the basic constitution of YH. and making the effective systems for promoting and supporting the researches of particle physics.
