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Facility for Testing the Ageing Properties of Construction Materials for High Rate Gas Detectors

Experiments like CBM at FAIR will make use of gas detectors at high interaction rates. The construction materials for serial production of the detectors have to be chosen carefully in order to ensure the operation of the detector over the projected lifetime of the experiment. Deterioration of the detectors ́ performance (“ageing”) is a serious threat for gas detectors in high rate experiments [1]. We have set up the infrastructure to carry out gas detector ageing tests on such materials at the GSI Detector Laboratory. This involves the appropriate irradiation sources (Xray, radioactive sources), an ultra-clean gas system, readoutand monitoring systems, material analysis etc.