aLIGO LHO Logbook

H1 DetChar

jenne.driggers@LIGO.ORG - posted 18:05, Monday 19 August 2019 - last comment - 10:37, Tuesday 20 August 2019(51392)

43 seconds of data marked as Observe, should be marked Commissioning

After relocking we put the interferometer into Observe. However, the PEM team has some equipment out on the floor that they'll need to go out to the LVEA to turn off. So, this 43 second Observe segment should please be marked by DetChar as observing (maybe most pipelines already ignore measurements that short?)

Comments related to this report

laura.nuttall@LIGO.ORG - 07:26, Tuesday 20 August 2019 (51401)

Link

Yep the offline searches shouldn't pick this up because it's so short like you said.

jeffrey.kissel@LIGO.ORG - 10:37, Tuesday 20 August 2019 (51407)DetChar, PEM

Link

A too-fast of fingers typo in Jenne's entry above:
"...  please be marked by DetChar as observing ..."
should be 
"... please be marked by DetChar as commissioning ..."

Just an historical correction; Laura's comment indicates that no work needs doing (at least for transient searches) since the observation segment was too short to ride the rollercoaster. 

Also -- the equipment on the floor was that for acoustic injections throughout the LVEA. Not only was is powered on, but it was *injecting* acoustic noise.  I'm sure there will be an aLOG by the PEM team eventually.