Fig. 18.

Relative S2 correction maps for the top array (top) and bottom array (bottom) as a function of the reconstructed coordinates $X_{\text{obs}}$ and $Y_{\text{obs}}$ derived from $_{}^{83m}$Kr data. The two evident narrow bands with enhanced S2 response are produced by the transverse wires located on the gate and anode electrodes to mitigate their sagging