Path length analysis

Module type name (to be used for the module commands): pathLength

Description

The path length analysis module computes the total path length in the selected volume(s). The path length is the sum of all step lengths of all particles inside the volumes.

In SEU analyses, the path length analysis can be useful for the generation of step-length histograms for later convolution with LET spectra (which can be obtained with the LET analysis module).

In micro-dometric studies, this module can be used to define an average length of radiation from a given source direction for lineal energy spectra.

The results can be split into the contributions by incident particle species by specifying additional volume boundaries.

Script example:

/gras/analysis/pathLength/addModule pathLengthDetector
/gras/analysis/pathLength/pathLengthDetector/addVolume Detector
/gras/analysis/pathLength/pathLengthDetector/addVolumeInterface Hall Detector
/gras/analysis/pathLength/pathLengthDetector/setUnit mm

Available Units

The module accepts as units all the G4 units under the “Length” category.

Specific Module commands

The Module doesn’t have any specific commands.

Output

Scalars (only in CSV file)

AVERAGE PATHLENGTH

  • Average path length of each event in the specified volumes

  • Always active

  • Precision Calculations This variable is registered for precision calculations if activated

Histograms (in CSV and ROOT files)

Controlled by the bookHisto command (default is active).

PATHLENGTH DISTRIBUTION

  • Name (for the setHistoByName command): <moduleName>_path_length

  • Spectrum of the path length per event in all the specified volumes

  • Always active

Tuples (only in ROOT file)

Controlled by the bookTuples (default is active).

<moduleName> Event total pathLength

  • Name: <moduleName>_tuple_path_length

  • Path length information by event

  • Columns:

    • pathLength: path length of the event

    • weight: weight of the event

  • Always active

<moduleName> Event pathLength per particle

  • Name: <moduleName>_tuple_path_length_per_particle

  • Path length information by event per particle

  • Columns: tid, weight, primarykine, pdg

    • pathLength: path length of the event per particle

    • weight: weight of the event

    • pdg: pdg of particle

  • Always active

GRAS/trunk/r2242