aLIGO HAM-ISI, Pre-Installation Test Report, Phase II, LLO HAM 3

Document #:

LIGO-E1200104-v6

Document type:

E - Engineering documents

Abstract:

aLIGO HAM-ISI, Pre-Installation Test Report, Phase II, LLO HAM 3
Most issues found while side-testing were solved during this phase of the testing. Very few issues were found during the testing of this unit. The known issues are summed up here:
- The Linearity test gives a slightly different slope on the H2 actuator (1.5% from average for a 1% criteria)
- We have a slight offset of 2 CPS: H1 and V3.

Issues unchanged since the Phase I testing:
- sensor gaps not recorded on the jig
- Vertical spring constant: one spring appears to have a much lower constant than the others (-8.91% than the average of the 3).

Files in Document:

• E1200104 aLIGO HAM-ISI -LLO HAM 3 - V6.pdf (2.5 MB)
• E1200105 aLIGO HAM-ISI -LLO HAM 2 - V3.pdf (2.3 MB)

Other Files:

• E1200104 aLIGO HAM-ISI -LLO HAM 3 - V6.doc (8.8 MB)
• E1200105 aLIGO HAM-ISI -LLO HAM 2 - V3.doc (5.2 MB)

Topics:

• Seismic Isolation

Authors:

• Celine Ramet
• Fabrice Matichard

Notes and Changes:

Added in chamber testing

Related Documents:

• LIGO-E1000327: aLIGO HAM-ISI, Test Report, Phase I: Assembly Validation, LLO Unit #3 (HAM3)

Referenced by:

• LIGO-E1100997: aLIGO HAM-ISI, Phase II Testing Reports