Figure 4. Trap configuration and number of traps generated eleven designs.

Eleven trap designs were evaluated by varying the regular, clustered, and sequential trap arrangements for J = 128, 96, and 64 traps. Only the regular and sequential arrangements were evaluated for J = 32 traps since the clustered arrangement with one trap per cluster was equivalent to the regular arrangement. Trap spacing did not change when traps were in the clustered and sequential arrangements.