Development Of MGWC & MRPC And Study On Their Performances

Gas detector has been one of the most widely used radiation detectors in basic sciences and many social development fields. Over the past several years, there have been two new kinds of gas detectors: MPGD and RPC or MRPC which represent the development trend of gas detector. Therefore it is very meaningful to develop MPGD &MRPC and study on their performances, because these two kinds of gas detectors have great potential.This paper includes two sections. The first section has studied on the laws about drift, diffusion of electrons and positive ions and electronic avalanche under high electric field in mixed gas. Meanwhile the mechanism of MPGD and the process of developing MGWC have been analyzed. And at the same time some functions for calculating the physical parameters of MGWC has been acquired. Based on the situation of print circuit technology in China, a prototype of MGWC has been constructed, and some of its performances have also been tested. Finally principles and methods for improving the performances of MGWC have been presented. According to the theory of Gas Conduction and Statistical Physics, the second section of this paper has researched into the micro-mechanism of MRPC and reached conclusion. A system for testing the performances of MRPC by cosmic rays has been established, and the MRPCs constructed by us have been measured too. The results of measured performances of MRPCs have proved that the MRPC developed by us has had advanced level in the world.