Electric field calculation for TPC detectors with multi-wire and multi-strip geometry

It is crucial to calculate the electric field distribution using Finite Element Analysis (FEA) program so as to do high efficiency simulation works for TPC gaseous detectors. A FEA program combined with the nodes positioning method has been employed to do the electric field calculation for TPC detectors, which basically have the geometry of multi-wire and multi-strip. After the tests of the nodes positioning method, we finished the electric field calculation and drift simulations for SRIT-TPC, which had been constructed by MSU and other institutions. The calculation and simulation results agree well with those calculated by GARFIELD. Furthermore, 3D electric field calculation and the simulation for TPC detectors can also be done in a similar way.