Maximum ETM displacement for Hardware Injections, pre-O1

Document #:

LIGO-T1500484-v2

Document type:

T - Technical notes

Abstract:

The purpose of this memo is to define the maximum ETM displacement that can be achieved for the purposes of hardware injections, when an interferometer is operated in its nominal low-noise mode.

[mevans]
LLO log entry describing change to ESD driver (moved pole up to 3kHz) https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=19539

Files in Document:

• MaxETM4HWinjections.pdf (file is not accessible)

Other Files:

• MaxETM4HWinjections.docx (file is not accessible)

Topics:

• System Engineering
• Modelling

Authors:

• Peter Fritschel

Notes and Changes:

v2: Includes a curve for the L1 ETMY ES-Driver, modified so as to give more range above 150 Hz.

Referenced by:

• LIGO-T1400349-v13: Documentation of the Advanced LIGO Hardware Injection Infrastructure