LAYER: (layer_name)
REPEAT : TIMES=value, geometry parameter step=value,...)
GEOMETRY:(geometry parameter=value,geometry parameter=value,...)
MATERIAL:(material parameter=value,material parameter=value,...)
MEASUREMENT:(measurement parameter=value,measurement parameter=value,...)
ENDREPEAT:
The layer description following directly after the REPEAT-statement should
describe the first layer in the repeating portion of the detector. All the
repeated layers will have the same name, measurement properties, and material.
Possible geometry step parameters are: DELTA_R, DELTA_ZMIN and DELTA_ZMAX
(barrel) or DELTA_Z, DELTA_RMIN and DELTA_RMAX (forward). The parameter
TIMES specifies how many times the layer should be repeated, including the
first layer (to which the step is NOT added, but is rather exactly as
described by the GEOMETRY keywords following directly after the REPEAT
keyword).