Download the appropriate TOPAS code bundle from the list below
For pre-built Linux versions, the file comes in two parts. Download both parts.
topas_3_9.zip is the source code, for those who want to build from source.
topas_3_9_osx11_7.zip is pre-built for MacOS 11.7 and newer
topas_3_9_debian9.tar.gz is pre-built for Debian 9 and 10 and Ubuntu 18, 19 and 20.
topas_3_9_centos7.tar.gz is pre-built for CentOS 7 and RHEL 7
topas_3_9_centos8.tar.gz is pre-built for CentOS 8 and RHEL 8.
See the User Guides link on the left menu for further instructions.
For access to additional resources, including the TOPAS User Forum, we invite you to join the TOPAS User and Development Community. See the Registration link on the left menu.