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Reports until 11:48, Tuesday 15 December 2015
H1 SEI (GRD, SEI)
sheila.dwyer@LIGO.ORG - posted 11:48, Tuesday 15 December 2015 - last comment - 18:34, Tuesday 15 December 2015(24239)
SEI BS ST2 isolated by ISC_LOCK guardian

Attached is a comparison of the GS13s with stage 2 isolated (blue) vs damped (red).  

We still haven't seen the impact on DARM, but I've added this to the ISC_LOCK guardian similar to the way it is done at LLO. This means I also changed the nominal state for SEI_BS to FULLY_ISOLATED

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sheila.dwyer@LIGO.ORG - 18:34, Tuesday 15 December 2015 (24247)
Link

This makes no apparent difference in the DARM spectrum. 

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