  Resistive Plate Chamber (RPC) is a gaseous detector, known for its good
spatial resolution and excellent time resolution. Due to its fast response and
excellent time resolution, it is used for both triggering and timing purpose.
But the time resolution of RPC is dependent on the detector geometry, applied
voltage and the gas mixture used for detector operation. In this work, we have
tried to develop a numerical model to estimate the time resolution of the
detector. The model is developed using COMSOL Multiphysics, a commercially
available finite element method solver. Using the primary ionization
information from HEED and the electron transport properties from MAGBOLTZ, the
model solves the Boltzmann equations to simulate the avalanche in the detector
and finds the time to cross a previously determined threshold current, which is
used to measure the time resolution of the detector.
