LIGO Document E1600291-v1

Initial inspection of PMC S/N11 at LHO Sept. 22, 2016

Document #:
LIGO-E1600291-v1
Document type:
E - Engineering documents
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Abstract:
On Sept. 22, B. Weaver and R. Savage removed the mirrors from PMC S/N 11 to prepare the aluminum body for machining to test the upgrades that are planned.

Some photos of the process are included below

PMC /// Average Loss /Mirror, ppm (each mea.) // Comments
PMC-08 50.2 ± 3.9 (43.0, 55.2, 40.6, 56.2, 61.8, 44.2) Swapped out at LLO, faulty PZT (original L1 unit)
PMC-09 46.1 ± 3.4 ( 55.4, 52.4, 52.5, 48.0, 41.2, 32.6, 40.3) erd interferometer unit
PMC-10 1375 ± 51 (1414, 1422, 1290) Swapped out at LLO, extra loss. (original H1 spare)
PMC-11 4169 ± 57 (4212, 4126) 3rd interferometer unit, shipped to LHO and back for O1 spare

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