Circuits for multielement and cylindrical proportional chambers

Electronics connection circuit for multielement and cylindrical chambers meant for measuring 3H, 85Kr, 133Xe and 135He low concentrations are proposed. The detector consists of 19 internal hexahedral elements and 3 layers of multiwire cylindrical counters. To reduce the number of electronics channels the outputs of internal counter elements are linked specially to have only 3 outputs. The counter signals arrive at the preamplifier, discriminator-shapers, logic analysis unit and to the pulse counter. The logic unit and the counters are coupled with the monitoring circuits. The data unit performs events timing