摘要
Multi Wire Drift Chambers(MWDCs)in External Target Facility(ETF)are in their first commissioning since fabrication.Six MWDCs are arranged to form two 3-MWDC arrays to trace particles flying in straight trajectories in air and in absence of magnetic field.Each of the MWDCs is of cubic shape(800 mm600 mm130 mm)with six layers of sense wires installed in three different orientations.The tracking program is supposed to reconstruct all 3-D tracks passing through the MWDC arrays to the designed spatial resolution of 200μm.A Monte Carlo event generator was written according to the geometrical specifications of the objective MWDCs to help develop and evaluate a feasible pattern recognition program.
