Synchronization of the CMS muon detector

Precise synchronization is crucial for the functioning of the CMS Muon Detector. In this paper we first discuss the possible sources of data misalignment, like variations in particle time of flight, signal formation and propagation within a detector ( e.g. drift time), connections between various elements, set-up times and jitters of digital electronics. Then we review several methods which can be used to synchronize the system for the first time and to maintain the synchronization over a long period of time. Finally we discuss in detail a possible application of those methods to the Resistive Plate Chambers. We also briefly discuss the cases of Drift Tubes and Cathode Strip Chambers.