corey.gray@LIGO.ORG - posted 10:35, Tuesday 28 June 2016 - last comment - 10:52, Tuesday 28 June 2016(28005)
Test Mass & HAM Oplevs vs Locklosses
Last week, Rana was inquiring about how locklosses affect oplev sums.
Took a random sample of locklosses from O1 and came up with fairly consistent results for after a lockloss, so here's the nitty gritty:
- HAM oplevs sums don't change
- ETM sums drop ~3%
- ITM sums drop ~1% (which is small compared to overall DC drift of the sum value)
Attached is an example of a lockloss from Nov.
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There's a DCC document and even a tool to look at these things.