Fluid mechanics of fusion lasers

Flow loop components required to operate continuous flow, repetitively pulsed CO2 and KrF laser drives for ICF were identified and their performance requirements were specified. It was found that the laser flow loops can have a major effect on the laser beam quality and overall efficiency. The pressure wave suppressor was identified as the most critical flow loop component. The performance of vented side wall suppressors was evaluated both analytically and experimentally and found capable of meeting the performance requirements of the CO2 and KrF fusion lasers. All other laser flow loop components are essentially similar to those used in conventional, low speed wind tunnels and are therefore well characterized and can be readily incorporated into fusion laser flow systems designs.