LIGO Document D1500163-v2
- Redesigned End Reaction Mass (ERM) with Dia. 200 mm hole in center
- Notes on changes to current version:
-F/D: Updated registration marking note in multiple locations.
-Zone B/5: Added wedge requirements.
-Zone B/7: Thickness tolerance +/-.05
-Zone C/4: Added detail 'D'
-Drawing title was: E&D, End reaction mass (ERM)
-Updated note no. 4, was: .....incremental staring with "01"
Mod for next rev:
-Zone F/5: Center void diameter 222.5 ± 0.25 mm with similar Cyl. & Perp. as OD (340mm)
Explicitly call out the known density of SF2 glass - note the final mass is the critical metric.
Released for comment (not production)
Gold coating specification E0900138
ESD coating pattern D090949
Barrel coating pattern D090958
DCC Version 3.4.0, contact
Document Database Administrators