Specification for Oxidation of Polished Mirror (Super #8) Stainless Steel for aLIGO Baffles and Beam Dumps

Document #:

LIGO-E1100842-v8

Document type:

E - Engineering documents

Abstract:

This process specification is for the process of oxidizing mirror finished (Super #8) 304 stainless steel baffles for Advanced LIGO to provide baffling for stray light beams. A high temperature furnace baking process reduces the reflectivity of the stainless steel baffle @1064nm to approx 12%. It includes material requirements and the process and preparation for oxidation. These baffles are for use in an Ultra-High Vacuum (UHV) system.

Files in Document:

• E1100842-v8 MIRROR FINISH SS SPEC.pdf (61.3 kB)

Other Files:

• E1100842-v8 MIRROR FINISH SS SPEC.docx (126.3 kB)

Topics:

• Fabrication
• Auxiliary Optics

Authors:

• Heidy Kelman
• Jeffrey Lewis
• Michael Smith
• Lisa Austin
• Joe DeRenzis

Keywords:

Baffles and Beam Dumps

Notes and Changes:

Added "FTIR Sampling of crated parts" and removed C3 use. lca

Referenced by:

• LIGO-E1300295: SLC & VP Materials and fabrication specification
• LIGO-T1000747-v4: Arm Cavity Baffle Final Design (SLC)
• LIGO-T1200313-v3: BS Elliptical Baffle Final Design