As with many components of OMEGA EP, amplifiers that meet the system requirements are not produced commercially and must be designed in-house. This LLE-designed amplifier configuration is similar to amplifiers currently used in the 60-beam OMEGA Laser System. However, each OMEGA amplifier uses four laser disks, while the OMEGA EP prototype amplifier will contain a single disk. Ultimately, eleven of these modules will be used in the main amplifier and five will be used in the booster amplifier. Other requirements include a modular design (three major assemblies: the amplifier frame assembly, the disk frame assembly, and the pump module); water-cooling for glass components; the ability to take at least one shot every two hours (i.e., the optics must cool down within this time frame to prevent damage); the ability to accommodate a 40-cm-sq. laser beam, and maintenance similar to the existing OMEGA amplifiers.