E. Goetz, J. Kissel,

 Evan and I installed many front-end model changes in support of O3-level calibration pipeline infrastructure. Apologies for the delay in the actual "we did it!" log.
This was briefly touched on in Dave's CDS report yesterday, (LHO aLOG 44440), and documented in Evan's Monday aLOG in prep for it, (LHO aLOG 44418), and mine before that (44319). The changes are re-stated (with one addition and a few edits) from Evan's aLOG listed below. 

We are actively and furiously drawing MEDM screens (most of yesterday afternoon and evening, and will continue today) in order to reflect the changes so we can make the new infrastructure functional, so please have patience with us while we work through that to find bugs and errors.

Yes, we have changed several things including the DAQ channel list, and calculations of time dependent correction factors so we necessarily expect that down stream products will be broken for a bit (e.g. LHO aLOG 44454) until we fully integrate these new changes.

We'll be regularly updating G1801594 and T1700106 in order to reflect the changes we've made as we've been hit in the face with the reality of actually implementing all this new stuff.

 (most repeated here for your convenience, with some additions):

  1) Since LHO alog 44319, in CAL-CS the Library Parts -- the meat of the changes -- we have:
/opt/rtcds/userapps/release/cal/common/models/CAL_CS_MASTER.mdl
/opt/rtcds/userapps/release/cal/common/models/CAL_LINE_MONITOR_MASTER.mdl
     - completed the front end computation of the detuned SRC spring frequency and Q (f_s and Q) because we changed the tracking of PUM and UIM stage from a common time dependent scalar to be separately tracked as two time dependent scalars
     - implemented parallel path calculation for on-the-fly compensation for a time-dependent cavity pole frequency
     - added excitation point in QUAD model parallel to the calibration lines so that we make excitations for sweeps at the same point as for the calibration lines that are injected. This allows for easier removal of time-dependent changes in actuation gains so that we can search for unknown systematic errors

  2) CAL-CS top level model changes:
/opt/rtcds/userapps/release/cal/h1/models/h1calcs.mdl
     - Removed DARM_ERR_WHITENED and DARM_CTRL_WHITENED since these are no longer actually whitened and instead are double precision channels
     - Added an IPC receiver from each end station TX PD to the top-level CAL-CS model and piped it in to the CS library part
     - Added new CFTD_DELTAL channels to the frames (CFTD = compensated for time dependence) as parallel channels to the standard DELTAL channels
     - Deleted DARM hardware injections in top level CAL-CS. These were unused
     (Note removing whitened channels and DARM hardware injections saves at least five 16k channels from being saved to frames. We added only two 16k channels and four 4k channels)

  2) PCAL library changes:
/opt/rtcds/userapps/release/cal/common/models/PCAL_MASTER.mdl
     - Removed oscillator line filters because they were unused
     - Removed RX and TX_PD_VOLTS filters and replaced with EPICS and testpoints
     - Implemented computation of optical efficiencies and force coefficients as laid out in T1800046
     - Allowed for different ADC gains and different analog AA filter gains because we care about this in the h(t) calibration at the <0.1% level

  4) In top level PCALEX / PCALEY model:
/opt/rtcds/userapps/release/cal/h1/models/h1calex.mdl
/opt/rtcds/userapps/release/cal/h1/models/h1caley.mdl
     - added IPC senders of TX PD signals to go to the CAL-CS model

  5) In the QUAD_MASTER and QUAD_ITM_MASTER.mdl parts, and associated L1 & L2 library parts,
/opt/rtcds/userapps/release/sus/common/models/QUAD_MASTER.mdl (for the L3 stage)
/opt/rtcds/userapps/release/sus/common/models/QUAD_ITM_MASTER.mdl (for the L3 stage)
/opt/rtcds/userapps/release/sus/common/models/FOUROSEM_STAGE_MASTER_OPLEV_TIDAL.mdl (for the L1 stage)
/opt/rtcds/userapps/release/sus/common/models/FOUROSEM_DAMPED_STAGE_MASTER_WITH_DAMP_MODE.mdl  (for the L2 stage)
     - added excitation point right next to where the calibration line is injected to facilitate compensating frequency-dependent sweeps with time-dependent correction factors.


Again -- presentation given to the calibration group (see G1801594) will be updated to reflect these changes.