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Message ID: 4     Entry time: Tue Feb 25 14:02:17 2020
Author: Dennis 
Type: Progress 
Category: General 
Subject: Optical Contamination Cavity Testing Queue 

Here is an update to the prioritized materials testing queue for UHV compatibility, which was last reported in elog:3

  1. On-going test - can be terminated now: E1900220-v1: Optical Contamination Test results: SR3 ROC Actuator, Ceramic Heater Assy
  2. On-going test - some value in continuing test: E1900232-v1: Optical Contamination Test results: Low-Reflection, Matte Black Aluminum Foil
  3. Accu-Glass PEEK UHV Heat-Shrink Tubing (useful for in-chamber cabling)
  4. Krytox LVP (not officially approved for LIGO, but permitted extremely small amounts on beam diverters & within New Focus picomotor 830X-UHV)
  5. Torr Seal epoxy (proposed for ZnSe window seal for in-vacuum, non-pumped, wavefront sensor by Australians, possibly for A+?)
  6. Castrol Braycote 601EF (used in a proposed vacuum rated heat switch motor assembly for Voyager)

Note that the following test has been terminated/completed "recently":

ELOG V3.1.3-