Reports until 14:27, Friday 18 January 2019
H1 SEI
jim.warner@LIGO.ORG - posted 14:27, Friday 18 January 2019 (46531)
Monitor channels added to SEIPROC for OAF_SUSPOINT and local ground differential sc

I have added some monitor and BLRMS channels to SEIPROC for the restarts this coming Tuesday. The BLRMS channels are on all of the OAF_SUSPOINT channels, this should be a useful quick monitor of any changes to seismic configuration effect on cavity lengths.

I've also added some sensor correction LOCAL_DIFF dq channels. SEIPROC calculates common mode ground motion, that gets sent to all of the chambers, allowing us to subtract off the large common ground motion leaving a smaller differential signal that we can use for sensor correction. Each chamber calculates this differential signal as a test point, but we weren't saving this data in the frames. It's easy enough to reconstruct, but it would be good to have a record of the input used, and we don't really need every chamber saving this data. Unfortunately, doing it in SEIPROC means we can't get the endstation off axis LOCAL_DIFF channels, but I got the other 7:
H1:SEI-EQ_ETMX_X_LOCAL_DIFF_DQ 
H1:SEI-EQ_ETMX_Z_LOCAL_DIFF_DQ
H1:SEI-EQ_ETMY_Y_LOCAL_DIFF_DQ
H1:SEI-EQ_ETMY_Z_LOCAL_DIFF_DQ 
H1:SEI-EQ_ITMY_X_LOCAL_DIFF_DQ 
H1:SEI-EQ_ITMY_Y_LOCAL_DIFF_DQ 
H1:SEI-EQ_ITMY_Z_LOCAL_DIFF_DQ