Annular End Reaction Mass Conceptual/Final Design Document

Document #:

LIGO-E1500264-v3

Document type:

E - Engineering documents

Abstract:

Replacement for the ERM (D080116) with an annulus ERM as recommended in LIGO-T0900582,
-V3 annulus is based on a rework of existing ERMs, requiring a modification of the penultimate reaction mass. The impetus for the change is the lack of availability of the SF2 glass and significant cost and schedule savings.

Related documents indexed here for convenience:
D1500163 AERM Drawing
D0080116 Old ERM Drawing

D0902001 Existing Shipping Container
Q1100083 Test method for verifying fiducial markings
L1500113 AERM impact on TCS
T1500455 Scattered Light Analysis - Yamamoto

references from the SF2 design, see-v2
T1500385 SF2 Glass RGA test - Taylor
T1500316 Magnetic susceptibility assessment - Weiss
T1500411 Electrostatic properties comparison - Weiss

Files in Document:

• Annular ERM Conceptual Design Document E1500264-v3.pdf (577.7 kB)

Other Files:

• Annular ERM Conceptual Design Document E1500264-v3.docx (544.1 kB)

Topics:

• Suspensions
• Final Design

Authors:

• GariLynn Billingsley
• Norna Robertson
• Brett Shapiro

Related Documents:

Referenced by:

• LIGO-T1500316-v1: Magnetic noise from lead glass recoil mass