RPC investigation using finely spaced 2-D strip readout

RPCs are in use for many high energy physics applications where there is no need for fine spatial resolution. However, there are applications such as digital calorimetry where the dimension of the induced charge at pick-up pads is of interest. Such calorimetry is proposed for eg, Particle flow calorimetrey at the ILC. While there are both experiments and calculations which address this to some extent, we have been able to read out a single gap RPC using fine pitch laser etched two-dimensional strip readout as used in GEM tracking. This measurement was made in the Fermilab test beam in conjunction with the GEM tracking test for the STAR upgrade. We discuss both data and electrostatic simulations of the signal from a single gap glass RPC.