Reports until 14:26, Thursday 18 July 2024
H1 AOS (IOO, ISC, SYS)
betsy.weaver@LIGO.ORG - posted 14:26, Thursday 18 July 2024 - last comment - 09:31, Friday 19 July 2024(79223)
Quick inspection of the first OFI comonents visible as the door came off

Looks like there is visible damage on the KTP optic of the OFI.

 

TBC...

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camilla.compton@LIGO.ORG - 17:11, Thursday 18 July 2024 (79228)IOO, ISC, SYS
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Betsy, Sheila, TJ, Mitchell, Camilla

On second inspection, after TJ and Mitch removed some of the OFI shroud 79227, you can clearly see two crater holes in the KTP wedge on the input (SRM) sideG2100316 OFI doc. The output (OMC) side of the KTP wedge looked smooth. Photo and photo. 

There is splatter on the Fused Silica wedge optic, holder and surrounding beam dumps facing the KTP crater holes. Photo and photo. Maybe there was more splatters on the KTP holder too.

Photos of the SRM AR surface looked fine, but it was hard to see: photo

Zoomed out photos of the OFI with shroud removed to aid with planning: here and here. 

Additional photos from everyone on googledrive here. 

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camilla.compton@LIGO.ORG - 08:37, Friday 19 July 2024 (79234)
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Attached is a view looking through the OFI from the SRM side back towards HAM6. As well as the two crater spots, you can see the black dots of splatter on the FS wedge. 

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corey.gray@LIGO.ORG - 09:31, Friday 19 July 2024 (79238)EPO
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Tagging for EPO.