LIGO Document E1500121-v1

ETM08 and ETM09 Pinhole in HR

Document #:
LIGO-E1500121-v1
Document type:
E - Engineering documents
Other Versions:
Abstract:
ETM08 H1-x ~200ppm peak transmission at a radius of 38mm
ETM09 L1-y ~900 ppm peak transmission at a radius of 33mm
Probe beam spot size 1mm
Back of the envelope estimate is ~sub ppm loss for the arm cavity.
The diameter of the pinhole on ETM09 is estimated at 10-20 micrometers based on
the divergence of the beam coming out the back.

Accepted at
https://services.ligo-wa.caltech.edu/integrationissues/show_bug.cgi?id=101

Keywords:
ETM08 ETM09
Referenced by:

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