rt Compound, MassAttenuationCoefficient, Material

#from stixcore.config.reader import read_energy_channels

__all__ = [&#39;Transmission&#39;]

MIL_SI = 0.0254 * u.mm

# TODO move to configuration files
COMPONENTS = OrderedDict([
    (&#39;front_window&#39;, [(&#39;solarblack&#39;, 0.005 * u.mm), (&#39;be&#39;, 2 * u.mm)]),
    (&#39;rear_window&#39;, [(&#39;be&#39;, 1 * u.mm)]),
    (&#39;grid_covers&#39;, [(&#39;kapton&#39;, 4 * 2 * MIL_SI)]),
    (&#39;dem&#39;, [(&#39;kapton&#39;, 2 * 3 * MIL_SI)]),
  