I have modified a large quantity of models today, as part of ECR E1800304 / FRS 11676. The goal is to provide a front-end way to shut off ISC-related outputs when we have a lockloss, even if some of the EPICs connections are failing (which causes guardian to not be able to execute the full DOWN reset state).
The trigger of lock or not-lock is generated using a new row of the LSC trigger matrix. That trigger is passed to all of our main IFO suspensions, as well as the ASC and OMC models. Everywhere the trigger is used, it goes through a ramping code written by JoeB some time ago, so that signals can either be ramped to zero or immediately set to zero (by setting the ramp time to 0 seconds, as usual). Each of these trigger blocks also has an Enable switch, so that we can chose to bypass use of the trigger for any particular set of outputs (eg, if we want to be triggering the output of the LSC model but not the ASC model, we'd bypass the trigger on the ASC model).
To enable more flexibility, there are many different locations where the trigger can be used or bypassed. Some of these may seem somewhat redundant, but I wanted to give each site flexibility and also the ability to disable either inputs or outputs of the suspension filter banks. I list the groups here. For each group, there is only one trigger / ramp that controls them all. All of these channels should be initialized properly with their ENABLEs set to 0 by default, which should give no net effect when we first install them, so that we can decide which ones we want to utilize. Each of these also has a monitor channel _IS_RAMPING.
- All LSC dof outputs [controlled by LSC-TRIG_IFO_{TRAMP, ENABLE}] This is ANDed with the old LSC-CONTROL_ENABLE.
- All OMC model LSC outputs to the quads [controlled by OMC-TRIG_LSC_{TRAMP, ENABLE}] This is ANDed with the old LSC-CONTROL_ENABLE.
- All ASC dof outputs (includes the ADS servo outputs, but not the dithers) [controlled by ASC-TRIG_IFO_{TRAMP, ENABLE}]
- All OMC ASC outputs to the OMC, OM1, OM2, OM3 [controlled by OMC-TRIG_ASC_{TRAMP, ENABLE}]
- For all suspensions listed, the LOCK filter banks have triggers, one for the length, and another for the combination of pitch and yaw, for each stage. Channel names are of the type: SUS-{optic}_{stage}_TRIG_LSC_{TRAMP, ENABLE} and SUS-{optic}_{stage}_TRIG_ASC_{TRAMP, ENABLE}.
- ITMX, ITMY, ETMX, ETMY: M0, L1, L2, L3
- BS, SRM, PRM, SR2, PR2, SR3, PR3: M1, M2, M3
- IM1, IM2, IM3, IM4, RM1, RM2, OM1, OM2, OM3: M1
- OMC: M1
- TMSX, TMSY: M1
- Quad suspensions also have separate triggers on their violin damping outputs [controlled by SUS-{ITMX, ITMY, ETMX, ETMY}_L2_TRIG_VIO_{TRAMP, ENABLE}]
Note in particular the things that I have not given triggers to: the IMC mirrors, or the IMC ASC dof outputs, since we want those to be active separately, and don't want a lockloss to kick the IMC out of lock if it wasn't already going to be. I also did not give triggers to the ADS dithers. I can add these if we think it's important. I also did not include any squeezer-related optics, since that is a pretty independent system. We can give the squeezer suspensions their own trigger if its needed.
I have not yet made any screen modifications (that will be tomorrow, hopefully).
When we are ready to implement this, we will need to restart:
- h1lsc (first, since it has the IPC sender)
- h1asc
- h1omc
- h1susitmx
- h1susitmy
- h1susetmx
- h1susetmy
- h1susbs
- h1susim
- h1sustmsx
- h1sustmsy
- h1sushtts
- h1susomc
- h1sussrm
- h1susprm
- h1suspr2
- h1suspr3
- h1sussr2
- h1sussr3
For LLO, we will need to svn-up to get all of the modifications to the suspension library parts, then add the IPC receiver to the top model for each sus. We will also need to hand copy the modifications to the LSC, ASC and OMC models.
EDIT: I have compiled all of the models, but not installed. h1asc has an error, which I will work on debugging in the morning.
