Commissioning and Initial Performance of the Dark Energy Camera Liquid Nitrogen Cooling System

The Dark EnergyCamera and its cooling system has been shipped to Cerro Tololo Inter-American Observatoryin Chile for installationonto the Blanco 4m telescope. Along with the camera, the cooling system has been installedin the Coude room at the Blanco Telescope. Final installationof the cooling system and operations on the telescopeis planned for the middle of 2012. Initial commissioning experiences and cooling system performance is described.