def METHOD_NAME(sections) :
    cooling_tungsten_dz = []
    front_tungsten_dz = []
    bilayer_absorber_cumulative = [0.]
    for name, num_bilayers, front, cooling in sections :
        for bilayer in range(num_bilayers) :
            cooling_tungsten_dz.append(cooling)
            front_tungsten_dz.append(front)
            bilayer_absorber_cumulative.append(bilayer_absorber_cumulative[-1] + 2*cooling + front)
    return cooling_tungsten_dz, front_tungsten_dz, bilayer_absorber_cumulative