The effect of Frisch-grid width on the weight potential

The detector configuration is 6x6x12 mm3. The position of Frisch-grid is 1-mm below the anode. The only variable is the width of Frisch-grid. Here is the results of the weighting potential for 2-mm and 5-mm Frisch-grid band width.

Figure 1

The width of Frisch-grid affects on the steepness of weighting potential. Weighting potential becomes steeper as the width of Frisch-grid wider. 

Figure 2

Figure 2 shows electric field and equipotential lines for 2-mm width of Frisch-grid.