LIGO Document E1500264-v3

Annular End Reaction Mass Conceptual/Final Design Document

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E - Engineering documents
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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

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