PHITS user's manual and lecture notes

User's Manual
The latest version of the manual is 3.31
[ 3.31 ] 2023/04/19
Manual is also updated in order to be suit for PHITS3.31

(Old revisions)
[ 3.27 ] 2022/03/31
[ 3.24 ] 2021/03/26
[ 3.20 ] 2020/04/09
[ 3.17 ] 2019/10/31
[ 3.10 ] 2019/04/09
[ 3.02 ] 2017/12/05
[ 2.88 ] 2016/09/30
[ 2.82 ] 2015/12/24
[ 2.76 ] 2015/03/20
[ 2.64 ] 2014/02/19
[ 2.52 ] 2013/03/05
[ 2.30a ] 2011/12/02
[ 2.30 ] 2011/08/18
[ 2.23 ] 2010/10/04

Lecture notes  [YouTube tutorial videos are available (Playlist here)]
Each file
Download zip file (including sample input files)

Operation environment
Recommended PC environment
OS: Windows (XP or higher), Mac (OS X v10.6 or higher), Linux or Unix
System memory: 1 GB or larger (more than 2 GB is recommended)
Hard disk: 6 GB or larger
Required Software: Editor that can show the line number
Examples of recommended editor
TeraPad (in Japanese)
Notepad++ (in English)
mi (for Mac, in Japanese)

EPS viewers such as ghostscript & GSview are required to show graphical output files calculated by PHITS.
Examples of download site of ghostscript: here
Examples of download site of Ghostview: here
Examples of download site of SumatraPDF: here

About compiling
PHITS is a Fortran program for particle transport simulation based on Monte Carlo method. We prepared installer of PHITS, so you do not have to compile PHITS by yourself. On the other hand, re-compile of PHITS is required to extend memory used in PHITS calculations and define your own source using the usrsors.f file. Fortran compiler is required to compile PHITS.

Recommended compiler
Recommended Fortran compilers are Intel Fortran 11.1 (or later).
OneAPI Intel Fortran Complier is freely available. For instlation of the complier and the compilation of PHITS, please see details.