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Based on analysis of the discharging course in double grid air counter (DGAC),the dischargin model is built up by applying the conception of average ionizing free path. An effective algorithm is presented for the working voltage of DGAC using this model. The working voltage is nearly related to the geometric parameters of DGAC, the sensitivity of the circuitry and the number of discharges. Computing results confirm that the working voltage increases with the ratio of the radius of the anode to that of the cathode. The number of discharges follows the similar rule.
Based on analysis of the discharging course in double grid air counter (DGAC), the dischargin model is built up by applying the conception of average ionizing free path. An effective algorithm is presented for the working voltage of DGAC using this model. The working voltage is nearly related to the geometric parameters of DGAC, the sensitivity of the circuitry and the number of discharges. Computing results confirm the the working voltage increases with the ratio of the radius of the anode to that of the cathode. The number of discharges follows the similar rule