FAS Abstracts 2004 Meeting Page

Joint Meeting: Engineering & Physics and Space Sciences A (PSS): PSS-4

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Simulation of aging phenomena in gaseous particle detectors. J. JANNEY, J. BRENNER, K. DEHMELT, E. DSHALALOW, M. GIBSON, M. HOHLMANN, and D. WOLFMUELLER, Departments of Chemistry, Mathematics, Physics & Space Sciences, Florida Inst. of Tech., Melbourne, FL  32901. Aging phenomena affect the efficiency of gaseous detectors through various chemical reactions occurring within the detector gases. Up to 30 different physical and chemical processes need to be modeled, e.g. electron diffusion, polymer ablation, or the addition of gas phase species to polymers. The goal is to understand the interplay of these processes in detail to find means of avoiding aging effects and prolonging the useful lifetime of these particle detectors. First results of a simulation starting from the GARFIELD program package will be discussed.