LIGO Vacuum Compatibility, Cleaning Methods and Qualification Procedures

Document #:

LIGO-E960022-v10

Document type:

E - Engineering documents

Abstract:

This document sets forth the procedures and standards by which materials and parts to be used in LIGO interferometers may be qualified and assayed for compatibility.

Files in Document:

• E960022-v10 UHV cleaning and qualification procedures.pdf (680.7 kB)

Other Files:

• E960022-v10 UHV cleaning and qualification procedures.doc (1.3 MB)

Topics:

• Vacuum
• Fabrication

Authors:

• Dennis Coyne

Notes and Changes:

• Expanded section on EP30 gluing to include specific subassembly instructions for curing and baking.
• Added section for Glass processing
• Updated AOSEM bake duration from 48 hours to 96 hours.
• Added statement in large 0-ring step to vacuum bake after processing per E960159.

To Add Next Rev:
Double check the OSEM cable harness instructions - carried over from iLIGO OSEM pigtail instructions.
12.17.5 Should pertain to QUAD Pen Flags, Mounts, and Prisms. Add ref to E1000277. Add provision to use heat lamps instead of Airbake oven...
12.17.6 Should pertain to Primary and Secondary Prisms BS/FM. Add ref to E1000753

Related Documents:

• LIGO-T0900368: Allowable Bake Temperature for UHV Processing of Copper Alloys