4. METHOD OF SOLUTION
ASNBILD performs two functions:
a. It searches the input deck to determine the nuclides required for the job, and creates CDC job control cards for ANISN as required.
b. It creates the two data decks normally typed by the user in fixed format. (The first data deck contains the title, 15$ and 16* arrays and the 14* card, and the second data deck contains a T, the 1*, 3*, 4*, 6*, 7*, 8$, 9$, 10$, 11$ and 12* arrays.)
The cross section file is created by the ANISN job control deck, choosing nuclides by using the COPYBR command, thus avoiding loading the whole of the data library for every run.
ASNBILD also creates the file JANISN (CDC job control for ANISN) which will contain the relevant COPYBR commands, and nuclides will be automatically chosen ready for the ANISN job.
Using ASNBILD allows commands (which may appear anywhere in the in- put deck) such as:
- STEEL FROM 10.0 TO 15.0 STEP 1.0
- STEEL 10.0 15.0 1.0
Mixing of elements may be defined by weight, volume or molecule.
Materials as well as elements may be mixed.
ASNBLD optimises the mixing table length by overwriting old cross section sets when possible.