摘要
A simulation study of the parallax effect of gaseous detectors using the Garfield program is reported. A method that mainly uses non-uniform cathode potentials to reduce the parallax error of planar type gas detectors is described. By applying it to MWPC and Micro-pattern gas detectors, the method reduces the parallax broadening with very good results. For a 13° incidence track, the width （FWHM） of the parallax broadening is reduced to less than 20% of the normal one after using the special cathode potentials.
A simulation study of the parallax effect of gaseous detectors using the Garfield program is reported. A method that mainly uses non-uniform cathode potentials to reduce the parallax error of planar type gas detectors is described. By applying it to MWPC and Micro-pattern gas detectors, the method reduces the parallax broadening with very good results. For a 13° incidence track, the width （FWHM） of the parallax broadening is reduced to less than 20% of the normal one after using the special cathode potentials.
基金
Supported by Scientific Research Fund of the Sichuan Provincial Education Department(11ZA140)
Scientific Research Fund of Southwest University of Science and Technology(10zx7123)
