Features of particle and heavy ion transport code system (PHITS) version 3.02

Sato, Tatsuhiko   ; Iwamoto, Yosuke   ; Hashimoto, Shintaro  ; Ogawa, Tatsuhiko   ; Furuta, Takuya   ; Abe, Shinichiro   ; Kai, Takeshi   ; Tsai, P.-E.; Matsuda, Norihiro  ; Iwase, Hiroshi*; Shigyo, Nobuhiro*; Sihver, L.*; Niita, Koji*

We have upgraded many features of the Particle and Heavy Ion Transport code System (PHITS) and released the new version as PHITS3.02. The accuracy and the applicable energy ranges of the code were greatly improved and extended, respectively, owing to the revisions to the nuclear reaction models and the incorporation of new atomic interaction models. In addition, several user-supportive functions were developed, such as new tallies to efficiently obtain statistically better results, radioisotope source-generation function, and software tools useful for applying PHITS to medical physics. In this paper, we summarize the basic features of PHITS3.02, especially those of the physics models and the functions implemented after the release of PHITS2.52 in 2013.