LIGO Document E1400472-v3

Test Mass In Situ Cleaning Procedure

Document #:
LIGO-E1400472-v3
Document type:
E - Engineering documents
Other Versions:
Abstract:
Although this document is written as a general in situ cleaning procedure for test mass optics, it is motivated by the need to clean residue from the perimeter of a central alignment window in a First Contact™ (FC) layer which has been observed in imaging of the H1 ETMy HR surface with Arm Length Stabilization (ALS) system green light (see LHO elog entry #15479):
https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=15479
Notes and Changes:
At GariLynn's request I switched the drag wipe procedure from T0900402 to E070304 (with acetone, not methanol). This procedure is now final for the H1 ETMy vent this week.

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