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MIDAS is a modern data acquisition system developed at PSI and TRIUMF. Supported hardware includes VME, Fastbus, CAMAC, RS232, GPIB, USB, ethernet, fiber optic and MSCB attached data acquisition devices. MIDAS is written in C/C++ and runs on Linux, MacOS and MS Windows. It is licensed under the GPL.


  • Doxygen Code structure, functions, etc...
  • Random notes : Notes that need to be incorporated in the documentation.



All MIDAS programs are under the GNU Public License

The GIT tree is available via a web interface. Using this interface, the most recent file versions can be obtained.

Alternatively, the files can be directly obtained via GIT by entering:

git clone
git clone
git clone
cd midas

Supported operating systems are:

  • primary: MacOS, RHEL/SL/SLC/CentOS Linux
  • secondary: MS Windows, Ubuntu Linux, Fedora Linux, FreeBSD, VxWorks, others (see Makefile)

The bitbucket repository is mirrored nightly to TRIUMF at Please use this mirror to install stable releases of MIDAS. To follow the latest development version, please clone from bitbucket.


News about bug fixes and new releases of Midas can be obtained from the Midas news group located at TRIUMF which uses the ELOG system. Users can register in this system to be notified automatically via E-mail when new entries are submitted.

Another source of information is the Bitbucket Repository of MIDAS, where one can see the latest changes to the software.

Related packages


Consult the User's Guide for information on using the wiki software.