The study and optimization of new micropattern gaseous detectors for high rate applications

We performed a new series of systematic studies of gain and rate characteristics of several micropattern gaseous detectors. In contrast to earlier studies, these measurements were done at various pressures, gas mixtures, at a wide range of primary ionization and also when the whole area of the detectors was irradiated with a high intensity X-ray beam. Several new effects were discovered common to all tested detectors, and which define fundamental limits of their operation. Results of these studies allow us to suggest some concrete ways of micropattern detectors improving.