Omega Volume VII-System Description, Руководство по эксплуатации

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Volume VII–System Description
OMEGA EP Operations Manual Page 22 of 35
G6867J1
Figure 1.11
The photograph shows the three tiled gratings aligned on the optical table and supported by a rotary stage used for coarse
alignment. Each of the outboard tiles has a precision control system used to align the beam wavefront to that of the center
grating tile.
G6866J1
Grating 2
Target chamber
selection mirror
Alignment
mirror
Deformable
mirror
Grating 3
Diagnostic mirror
Grating
1
Grating
4
Input beam
Beam
combiner
Figure 1.10
An illustration of the upper compressor’s optical path including the deformable mirror, beam combiner and target chamber
selection mirror. The diagnostic mirror provides a 1% pickoff for the short-pulse diagnostics, shown exiting the chamber to
the left. The optical configuration of the lower compressor is identical. The circles in the drawing are the GCC mounting
points.
In an alternative configuration the compressed-pulse-transport path permits the simultaneous
delivery of the compressed pulses to the OMEGA EP sidelighter and backlighter OAP’s (see
Sec. 1.5.1).
Each of the eight TGA’s is comprised of three MLD gratings. A photograph of a TGA is shown
in Fig. 1.11. The width of the assembly is designed to accommodate the beam footprint at 72.5º.