gerardo.moreno@LIGO.ORG - posted 17:46, Wednesday 26 June 2013 - last comment - 16:17, Thursday 27 June 2013(6895)
PUM-ETM04 Prism Update
(Betsy W, Gerardo M, Gerardo A. M)
Prism was removed today, finally. It took about 7 days of the common process of soaking the prism joint in acetone, then working on the joint by hand with a razor blade along with some acetone as a lubricant.
2 photos attached, one is where the prism used to be, second photo is the removed specimen.
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The prism will be reglued (into a new position that corrects for the ear placement error) during the early part of the week of July 8th. The PUM will then be packed up and sent to LLO for use in their ETMx monolithic suspension.
This timing for regluing depends on our having resolved the likely cause of the PUM crack and how to avoid it happening again during future welds.