Abstract
The effects of aging in multiwire proportional chambers operated at low pressure with gas mixtures containing TMAE has been studied in connection with their use as a form of readout of BaF/sub 2/ crystals in high-rate environments. Aging was induced by ultraviolet light, which simulated high radiation exposure of BaF/sub 2/ crystals. Measurements were made on the loss in gain as a function of the total charge removed from the anode wires under various operating conditions. The results indicate a considerable improvement over previous aging effects measured at atmospheric pressure. >
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