Design of a {O}94 cm mirror mount for the Petawatt Project on Nova

Abstract

SUMMARYWe have designed a large optical gimbal mount that will be used on the Petawatt Project currently under construction on the Nova laser. These mounts are designed to hold and tilt 0 9 4 cm mirrors and gratings that will redirect the 060 cm beam through the Petawatt vacuum compressor. Lacking the commercial availability to house this size optic, we have engineered a large mirror mount with a high natural frequency (42 Hz), low self-weight deflection of the mirror (&46), and high positioning accuracy characteristics (c1 p a d using flexures and stepping motors). Analysis details and methodology are presented.

Specific stability design criteria based on coupled motion considerations for optomechanical system in SGII facility

“…Then a set of generic criteria was summarized to guide and evaluate the structural stability design of optomechanical system [5] . As generic ones, these criteria are widely used by structural engineers in stability design of optomechanical system, especially in mirror support system [5][6] , which consist of mirrors (optical element) and their support structures (steel frame or vessels).…”