SDS-2 Modelling with DRAG_SHELL

Abstract

For SDS2 physics modelling, Ontario Hydro, "now Ontario Power Generation" introduced an automated methodology driven by a shell script named SDS2-SHELL, which uses the supercell code MULTICELL[1] and the lattice code POWDERPUFS-V[2], in order to provide appropriate incremental cross sections corresponding to various stages of poison injection in the moderator. With the current move to newer physics tools, RFSP-IST[3] is now required to have the capability to perform SDS-2 analysis in the full- two-energy-group methodology. In order to achieve this functionality, a new shell script, DRAG_SHELL, which uses the supercell code DRAGON[4] and the lattice code WIMS- IST[5] , was developed. The new DRAG_SHELL methodology has been automated using a UNIX Korn shell script. The execution of the suite of codes and the manipulation of the huge input and output data required for SDS-2 simulation is achieved by using intuitive, English language keywords. Some of the features of DRAG_SHELL include maintaining consistency of code-to-code data transfer and the standardization of input formats.