The neutron transport of structural materials housing components of fusion devices are not well understood.
Stainless steel is one such material, often used in the vacuum vessel and piping components.
SS plugs fill the central voids containing the detector foils. Errors are reported for gamma-ray interference and uncertainty in the three HPGe detectors. The systematic error is the uncertainty on the neutron source intensity. The foils were placed at various depths along the central z-axis, from 5 cm to 60 cm. IRDF-90 Covariance data in 175 energy group format was used to determine the error on reaction rates due to uncertainty of the activation cross sections.