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MichaelPage - 16:47, Tuesday 28 December 2021 (2776)Get code to link to this report
OPO incoupling mirror cleaning

Yuhang and Michael

We removed First Contact from the mirror and inspected the cleaning. It seems like some residue of the rubber stain remains and there is a lot of scattered light (fig 1 and 2).

After this we applied alcohol solution from a bottle in the ATC cleanroom (isopropanol based, I think it was called "Clarity" or something like that) in an attempt to remove water soluble stains (fig 3). Then after removing we reapplied First Contact.

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2776_20211228084404_cr67559.jpg 2776_20211228084411_cr67561.jpg 2776_20211228084435_cr67590.jpg