LIGO Document E1000278-v3

Preparation of an end or input test mass (ETM/ITM) (Hydroxide-Catalysis Bonding of ears)

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E - Engineering documents
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28 Aug 2012, 02:18
09 Mar 2012, 13:45
02 Aug 2011, 09:16
24 Feb 2011, 02:20
04 Aug 2010, 07:19
This document goes through the procedure for preparing an ETM/ITM test mass (D080658-v3 and D080657-v3) for monolithic installation into the quadruple suspension structure. The procedure consists of hydroxide catalysis bonding on a fused silica ‘ear’ (suspension element according to D080751-v1) to each of the surfaces S3 and S4 in a well-defined location and re-storing the mass. General hydroxide-catalysis bonding procedures are detailed in E050228. The procedure assumes the mirror substrate has been fully prepared with HR and AR coatings applied to respectively the front and the back surface of the substrate. It includes mirror handling with the ergo-arm during these procedures. Mirror handling procedures with the ergo-arm are detailed in T1000082.

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