Running SLIC at SLAC

Version 23 by Jeremy McCormick
on Jun 29, 2009 10:31.

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Current by Jeremy McCormick
on Jun 29, 2009 10:31.

 
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 Along with other software for LCD research, a common distribution of the SLIC simulator package is available for SLAC Unix users.
  
 {info:title=Access to NFS}
 Access to SLAC NFS can be requested from the [Unix Administration List|mailto:unix-admin@slac.stanford.edu]. (Of course, you must already
 have a SLAC Unix account to get NFS access.)
 {info}
  
 Open a connection to a SLAC Unix machine.
  
 {noformat}
 ssh [YOURACCOUNT]@iris.slac.stanford.edu
 {noformat}
  
 Replace *YOURACCOUNT* with your actual SLAC Unix account.
  
 Now, switch to the bash shell.
  
 {noformat}
 bash
 {noformat}
  
 You need to setup the project environment to access the common software
 distribution.
  
 {noformat}
 source /nfs/slac/g/lcd/mc/prj/bin/prj.sh
 {noformat}
  
 Now, you should be able to run slic from {{$PRJ_BIN}}.
  
 {noformat}
 slic [arguments]
 {noformat}
  
 {tip:title=SLIC Command Line Interface}
  The SLIC command line interface maps directly to Geant4 commands.
  The SLIC command line interface maps directly to Geant4 macro commands.
 {tip}
  
 To see available command line options, invoke the _help_ command.
  
 {noformat}
 slic --help
 {noformat}
  
 There are a number of different ways to run SLIC, including purely
 macro or command-line driven.
  
 For instance, here is a command to load the SDJan03 test geometry
 and start an interactive terminal.
  
 {noformat}
 slic -g $PRJ_DIST/slic/current/examples/sdjan03/SDJan03.lcdd -n
 {noformat}
  
 {tip:title=LCDD files for Common Detectors}
 The LCDD files for common detectors such as SiD are kept at */nfs/slac/g/lcd/mc/prj/data/detectors*,
 which should be accessible from the SLAC Linux machines.
 {tip}
  
 Now, in order to have a work area for your SLIC usage, checkout the
 package from CVS.
  
 {noformat}
 export CVSROOT=:pserver:anonymous@cvs.freehep.org:/cvs/lcd
 cvs co slic
 cd slic
 {noformat}
  
 Within this directory, you will be able to write LCIO files.
  
 This is an example of visualizing a single muon event in the SDJan03 test
 detector using GPS. From your slic directory, execute the following
 commands.
  
 {noformat}
 slic -g examples/sdjan03/SDJan03.lcdd -n
 Idle>/control/execute macros/vis_gl.mac
 Idle>/control/execute macros/gps.mac
 Idle>/run/beamOn
 {noformat}
  
 You could also dump a heprep.
  
 {noformat}
 Idle>/control/execute macros/heprep2.mac
 {noformat}
  
 Or you may want to check for overlaps in the detector.
  
 {noformat}
 Idle>/geometry/test/recursive_test
 {noformat}
  
 A purely macro-driven job can be executed from the slic directory like so.
  
 {noformat}
 slic macros/sdjan03_dbg.mac
 {noformat}
  
 You can dump this event using an LCIO utility.
  
 {noformat}
 lcio-dumpevent outfile.slcio 0 0
 {noformat}
  
 In general, a minimalist SLIC session will be started as follows.
  
 {noformat}
 slic -g /path/to/geometry/file -n
 {noformat}
  
 The {{-n}} will start an interactive session.
  
 Alternately, you may start up in interactive mode and manually input all required commands.
  
 {noformat}
 slic -n
 Idle>/lcdd/setURI examples/sdjan03/SDJan03.lcdd
 Idle>/run/initialize
 {noformat}
  
 An input file in StdHep or LCIO format can be specified with the {{-i}}
 option or using the {{/generator/filename}} command from the {{PreInit>}} prompt.
 When you call {{/run/beamOn}}, the events from this file will
 be used as input to the simulator.
  
 {tip:title=Batch job submission}
 Here is a set of commands that may be useful for batch submission.
 {noformat}
 slic -g geom_file -i input_file -p path_for_output_file -o output_file -s #_events_to_skip -r #_events
 {noformat}
 {tip}