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-v13

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-v13_PUM_bonding.pdf (271.9 kB)

Other Files:

• E1000277-v13_PUM_bonding.docx (289.6 kB)

Topics:

• Final Design
• Suspensions

Authors:

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

Keywords:

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

Notes and Changes:

v12 Norna added note on checking date of bonding solution which should not be used if more than 1 year old.
v13 Norna has expanded statement at beginning of section 3 referring to the use of the document T1300322 for guidance on bonding sapphire prisms to PUMs.

Related Documents:

• LIGO-D0901592: ASSEMBLY DRAWING - ear bonding jig
• LIGO-D080117: Penultimate Mass, ETM Quad
• LIGO-D080128: Penultimate Mass, ITM Quad
• LIGO-D0902823: ADVANCED LIGO ETM PEN MASS OPTICS WITH PRISMS AND EARS ASSEMBLY

Referenced by:

• LIGO-F1000006-v1: Bond quality monitoring form
• LIGO-T1000464-v1: De-Bonding Experiments on Samples Cured for up to Forty-Eight Hours
• LIGO-T1000337-v4: Quadruple Suspension Monolithic Stage Final Design
• LIGO-E1000495: aLIGO SUS QUAD Testing and Commissioning Documentation