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Standard layout of MIDAS experiment

This layout includes other packages needed for data analysis but not required for acquisition purpose only (noted as **). The online directory is given only as a suggested structure.

    root <---- ROOT (64-bit or 32-bit) (**)
    mxml  <---- from MIDAS repository
    midas <---- MIDAS
      linux/{lib,bin}  <---- binaries matching the selected 64-bit/32-bit flavour of ROOT
      linux-m32/{lib,bin}   <---- limited function 32-bit binaries for 32-bit frontend machines, build by "make linux32"
      linux-m64/{lib,bin}   <---- limited function 64-bit binaries (only needed if ROOT and linux/bin are 32-bit)
      linux-crosscompile/{lib,bin}  <---- cross-compiled limited function binaries for PPC and ARM frontends (see Makefile)
    exptab <---- experiment definition
    {.ODB,.SYSTEM,.SYSMSG,etc}.SHM <---- MIDAS shared memory save files
    src <---- experiment frontend sources
    elog <---- MIDAS elog (**)
    history <---- MIDAS history
    data -> /data/exptname/current <---- symlink to the data directory (**)
/data/exptname/current <---- experiment data directory with ODB save files and MIDAS .mid/.mid.gz data files

Valid OS list

Midas is compatible with:

  • linux : Maintained
  • Darwin : Maintained
  • freeBSD : Maintained
  • Arm : On Raspberry Pi
  • VxWorks : Rarely used, still maintained
  • OSF1 : Not used for quite a while
  • ultrix : Not used for quite a while
  • solaris : No used for quite a while
  • Cygwin : Not used for quite a while
  • PPC405 : Not used for quite a while

External libraries/packages consideration

Midas requires:

  • gcc compiler
  • zlib library.
  • c++11 compiler for latest frontend applications.

Environment Variables consideration

  • MIDASSYS Base directory of the MIDAS package, midas and mxml should be at the same level.
  • MIDAS_EXPTAB Experiment definition file
  • MIDAS_SERVER_HOST MIDAS host server name for remote midas connections.
  • MIDAS_EXPT_NAME Experiment name


setenv LANG C
setenv GIT_EDITOR "emacs -nw"
setenv MIDASSYS $HOME/packages/midas
setenv ROOTSYS  $HOME/packages/root
setenv MIDAS_EXPTAB $HOME/online/exptab
setenv PATH .:$MIDASSYS/linux/bin:$PATH
setenv PATH .:$HOME/online/bin:$ROOTSYS/bin:$PATH
# For default remote Midas server to myhost
setenv MIDAS_SERVER_HOST myhost00:7071

# For default remote Midas server to a given port
setenv MIDAS_SERVER_HOST myhost00:7071

# For no default on remote Midas server

# For default Midas experiment
setenv MIDAS_EXPT_NAME deap


export LANG=C
export MIDASSYS=$HOME/packages/midas
export PATH=$PATH:$MIDASSYS/linux/bin
export MIDAS_EXPTAB=/home/deap/exptab

# For default remote Midas server to myhost
export MIDAS_SERVER_HOST=myhost00:7071

# For default remote Midas server to a given port
export MIDAS_SERVER_HOST=myhost00:7071

# For no default on remote Midas server

# For default Midas experiment
export MIDAS_EXPT_NAME=deap

Installing MIDAS

  • mkdir $HOME/packages
  • Logout and login again, for .cshrc or bash changes to take effect

If you get a SSL server certificate error during the git clone operation see SSL certificate errors.

Setup a MIDAS experiment

See MIDAS installation instructions for TRIUMF experiments for further information.

Quick Start