Study of Short-Term Instability and Aging of FEU-115M Photomultiplier Tubes
نویسندگان
چکیده
Results of studying the instability of the gain of FEU-115M photomultiplier tubes (PMTs) at a varying counting rate corresponding to the range of the anode current of 0.02–120 μA are presented. It is shown that the behavior and value of the gain instability for different samples of this PMT type substantially differs when the counting rate changes. The relative change in the gain of some PMTs reaches 23%. Results of the study of the long-term behavior of the PMT gain in high-rate conditions (PMT aging study) are presented. The relative gain drop is 30% after an anode charge of ~600 C is accumulated.
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