THE THIN MULTIWIRE CHAMBER OPERATING IN HIGH-GAIN MODE AND ITS DISCHARGE MECHANISM

The research results of a thin multiwire chamber operating with strong ly quenching gas and its discharge mechanism are presented in this pap er. It is indicated by experiments that high gas gain and fast time re sponse can be achieved simultaneously because of operating in the satu rated mode. The effect of space charges and the emergence and action o f ionizing photons are essential factors in its discharge mechanism, b ut the latter factor is restrained by the strongly quenching gas. In t he experimental area of particle physics of high energy, the calorimet er plays an increasingly important role. As a part of the work of the L3 International Collaboration, we carried out the research and develo pment of the thin multiwire chamber operating in high gain mode which is a sort of sampling detector in calorimeter [1,2]. There has been re search abroad on this subject [3-61. In this paper, our research and r esults are presented.