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Reports until 12:49, Tuesday 24 June 2025
H1 SQZ
leendert.schrader@LIGO.ORG - posted 12:49, Tuesday 24 June 2025 (85282)
Measuring height of SQZ periscope
Leo Schrader, Camilla Compton, Sheila Dwyer, Jennie Wright

I am trying to build up a mode-matching model for the SQZ to OMC path. Measured the height of periscope closest to -X Side in SQZT7.
Height of periscope base plate measured 5/8 in. D1201011 front plate reported 25 in tall in design documentation.
Top of D1201011 to center of upper periscope mirror measured approx. 63/64 in.

Vertical beam travel in periscope thus computed as 22.61 in (574.3 mm).

Images of ruler measurements are attached.
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