minimc_geom

MiniMC geometry cfg-strings

Four MiniMC simulation geometries are currently available, all representing a single convex volume centered around the origin and axis aligned where appropriate.

Geometry examples

Here follows a few examples of how one can set the geometry using the geomcfg string parameter. Note that geometry length values are always to be specified in meters:

• "sphere;r=0.05"

  A sphere centered at (x,y,z)=(0,0,0) with a radius of 5cm.

• "cyl;r=0.001"

  An infinite cylinder around the y-axis with a radius of 1mm.

• "cyl;r=0.007;dy=0.03"

  A 6cm long cylinder around the y-axis with radius of 7mm. The cylinder endcaps are located at y=+-10cm.

• "slab;dz=0.1"

  An infinite slab bounded by planes at z=+-10cm.

• "box;dx=0.1;dy=0.2;dz=0.3"

  An axis-aligned box centered at (x,y,z)=(0,0,0) with the 8 corners located at (x,y,z)=(+-10cm,+-20cm,+-30cm).

Specific geometries available

The full list of available geometries and their parameters:

• "sphere":

  A spherical volume centered at (0,0,0).

  Parameters:

  • r (default "0.01") : sphere radius [m].

• "box":

  An axis-aligned box with corners at (+-dx,+-dy,+-dz).

  Parameters:

  • dx (default "0.01") : half-width [m].
  • dy (default "0.01") : half-height [m].
  • dz (default "0.01") : half-depth [m].

• "slab":

  An unbounded slab bound by planes through (0,0,+-dz) and normals (0,0,1). This is essentially a box with dx=dy=infinity.

  Parameters:

  • dz (default "0.01") : half-depth [m].

• "cyl":

  A cylinder around the y-axis. If dy!=0 the cylinder has finite length, with ends at y=+-dy.

  Parameters:

  • r (default "0.01") : cylinder radius radius [m].
  • dy (default "0") : Half-length of cylinder (0 means infinitely long) [m].