Two-dimensional discrete ordinates calculations of prompt radiation responses in the 1.75 m CIT

Two-dimensional calculations of the prompt radiation responses in the 1.75 m Compact Ignition Tokamak (CIT) have been carried out with a discrete ordinates model using the DOT 5.1 code. Of primary interest in the calculations was the nuclear heating rates in major tokamak structures such as the first wall, vacuum vessel and TF coils, which are required for the thermal and structural analyses. Comparisons were made with the results obtained with one-dimensional discrete ordinates models. Efforts were made to arrive at a simple algorithm that will provide the approximate two-dimensional distributions without the need to run a multi-dimensional model