LIGO Document E1000314-v2

aLIGO HAM-ISI, Pre-integration Test Report, Phase I, LHO Unit #5

Document #:
LIGO-E1000314-v2
Document type:
E - Engineering documents
Other Versions:
LIGO-E1000314-v3
28 Jun 2012, 16:15
Abstract:
HAM-ISI Unit #5 was built in April 2012. Tests presented here were performed between May 2nd 2012 and May 8th 2012. Tests were performed in accordance with E1000309-V12 procedure.

Particularities:
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-Horizontal GS13s featured non-consistent behavior after reception at LHO.
-Horizontal GS13s will be removed before storage of the unit, and shipped back to LLO for rework
-No L4C, no L4C brackets

Minor issues that don’t imply further work:
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-CPS gap measurement with a jig was waived to avoid scratching targets
-Excessive STD measured on CPSs is associated to ground motion

Minor issues that imply further work:
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-Information regarding production horizontal GS13s must be added once they are installed.
-Information regarding horizontal actuators must be updated when GS13’s doors are opened to pull the test horizontal GS13s out.
-Actuators linearity is within requirement. However the average slope deviation is out of spec. It seems to correlate with the cable+actuator resistance measurements. This observation needs to be correlated with the final measurements made with the in-field cables.


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