Dehn, M. Aulenbacher, K. Fichtner, F. Heine, R.G. Jennewein, P. Klag, W. Kreidel, H.-J. Röthgen, J.R. Tioukine, V. The MAMI-C Accelerator: 25 Years of Operation and Strategies for the Next Decade JACoW Geneva, Switzerland 978-3-95450-182-3 10.18429/JACoW-IPAC2017-TUPIK054 English 1816-1818 TUPIK054 klystron operation experiment microtron electron Contribution to a conference proceedings 2017 2017-05 http://dx.doi.org/10.18429/JACoW-IPAC2017-TUPIK054 http://jacow.org/ipac2017/papers/tupik054.pdf The Mainz Microtron Accelerator (MAMI-C) is a staged Race Tack Microtron (RTM) accelerator for 100μA polarised electrons up to 1.6 GeV energy. This report addresses the problems and our strategies to reliably operate the MAMI-C Accelerator for at least another ten years and what lessons have been learned for the new Mainz Energy recovering Superconducting Accelerator (MESA).