Preparation of an end or input penultimate mass (ETM-PM/ITM-PM) (Hydroxide-Catalysis Bonding of ears and gluing prisms and magnet flags)

Document #:

LIGO-E1000277-v4

Document type:

E - Engineering documents

Abstract:

This document goes through the procedure for preparing an ETM/ITM penultimate mass (D080117 and D080128) for 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, gluing wire break-off prisms to the mass, gluing magnet flags to surface S2 of the mass and re-storing the mass.

Files in Document:

• E1000277-v4 - Preparation of an end or input penultima...pdf (175.0 kB)

Other Files:

• E1000277 - Preparation of an end or input penultimate ...doc (950.0 kB)

Topics:

• Suspensions
• Final Design

Authors:

• Gerardo Moreno
• Margot Hennig
• Marielle van Veggel
• Russell Jones
• Karen Haughian
• Liam Cunningham
• Nicola Beveridge

Keywords:

aLIGO suspensions quadrupole suspension monolithic suspension ETM-PM/ITM-PM hydroxide catalysis bonding break-off prisms

Notes and Changes:

04/08/10: Requested DCC number for the document
08/04/10: Release v1 onto DCC
02/19/11: Release v2 onto DCC
31/03/11: Release v3 onto DCC – added a small overview schedule at the start of the document
02/08/11: Release v4 onto DCC – added procedural steps to check the position of the ears and prisms on the mass, a flag to slant the mass slightly to prevent the ear from drifting away from the jig

Related Documents:

• LIGO-D0901592: ASSEMBLY DRAWING - ear bonding jig
• LIGO-D080117: Penultimate Mass, ETM Quad
• LIGO-D080128: Penultimate Mass, ITM Quad