LIGO-T1000230-v6
07 Feb 2012, 12:27 |
N.B.: This document should remain publicly accessible.
Note: at LHO, in-chamber support tubes were centered in HAM and BSC nozzles for HEPI installation. This meant that ISI position (x,y,z) was subject to small (mm-to-few cm) offsets, owing to *as-built chamber positions*. In certain instances (e.g. WBSC3 ITMX), the offset incurred by the as-built chamber position meant that a SUS position on a given ISI (ITMX quad position, in the WBSC3 chamber example) had to be modified.
Thus, when installation commences for the I1 LIGO India detector, as-built chamber positions *must* be taken into account for IAS assessment of SUS and optic positions.
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