OMEGA 20-cm disk amplifiers

The 15-cm disk amplifier has 132-cm-long longitudinal
flash lamps, each equivalent in arc length to a five-lamp brick
used on the 20-cm disk amplifier.

An OMEGA 90-mm-diam rod amplifier

The major components of the 20-cm disk amplifiers. The 15-cm disk amplifier is smaller
but has longitudinal flash lamps rather than transverse.

The amplifier staging of the upgraded OMEGA laser consists of four stages of rod
amplifiers and two stages of disk amplifiers. The early stages compensate for the 1:60
splitting; the last three stages provide ~97% of the beamline energy.

One of the four structures that support the Stage-E and Stage-F disk amplifiers.
Each structure has six doors, each of which can swing out any or all of the associated
five amplifiers. A crane on each structure can lower an amplifier to floor level to facilitate
routine maintenance.

OMEGA laser rods

Amplifier structure nitrogen purge schematic.