LIGO Document E1400198-v1

aLIGO Pcal Periscope Mirror Removal, Storage, and Replacement Procedures

Document #:
LIGO-E1400198-v1
Document type:
E - Engineering documents
Other Versions:
Abstract:
After the pre-aligned and locked steering mirror/mounts have been removed from the Pcal Periscopes, the mirrors are removed from the mounts and installed in storage containers.

The following procedure enables the mirrors of each Periscope to remain matched to their respective mounts, with repeated orientation within the mounts, as is required to maintain the precise pre-alignment of the Periscopes. The procedure regards the Ifo3 X-Arm Periscope as example.

The steps of mirror Removal & Storage are covered. For mirror/mount rebuilding, these
steps are to be followed precisely in reverse, referring to Mirror Storage Records created
in the Removal & Storage steps contained herein.


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