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

Document #:

LIGO-E1000314-v2

Document type:

E - Engineering documents

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:
------------------
-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:
----------------------------------------------------------
-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:
---------------------------------------------------
-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.

Files in Document:

• E1000314-v2_HAM_Unit_5_Testing_Phase_I_Report.pdf (8.0 MB)

Other Files:

• E1000314-v2_HAM_Unit_5_Testing_Phase_I_Report FM Comme...pdf (8.1 MB)
• E1000314-v2_HAM_Unit_5_Testing_Phase_I_Report.docx (8.3 MB)

Topics:

• Seismic Isolation
• Subsystem Test

Authors:

• Hugo Paris
• Fabrice Matichard
• Jim Warner
• Hugh Radkins
• Mitchell Robinson
• Corey Gray
• Greg Grabeel
• Eric Allwine
• Vincent Lhuillier

Keywords:

HAM-ISI UNit #5 Assembly Validation