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We employ hydrodynamical simulations to investigate the underlying mechanismresponsible for the low levels of gas and dust in globular clusters. Our modelsexamine the competing effects of energy and mass supply from the variouscomponents of the evolved stellar population for globular clusters 47 Tucanae,M15, NGC 6440, and NGC 6752. Ignoring all other gas evacuation processes, wefind that the energy output from the stars that have recently turned off themain sequence are capable of effectively clearing the evolved stellar ejectaand producing intracluster gas densities consistent with current observationalconstraints. This result distinguishes a viable gas and dust evacuationmechanism that is ubiquitous in globular clusters. In addition, we extend ouranalysis to probe the efficiency of pulsar wind feedback in globular clusters.The detection of intracluster ionized gas in 47~Tucanae allows us to placeparticularly strict limits on pulsar wind thermalization efficiency, which mustbe extremely low in the cluster's core in order to be in accordance with theobserved density constraints.

Modeling Gas Evacuation Mechanisms in Present-Day Globular Clusters: Stellar Winds from Evolved Stars and Pulsar Heating