I'm trying to go through the same commissioning procceedure that LHO went though to get simulines optimised and working.
Essentially:
- Start with really small injections. Looking at actuators to make sure that we have made sane choices in amplitudes by looking at all actuator outputs through the injection and making sure that we are far, far, from the DAC limits, as we would expect from the intended overall injection amplitude reduction.
- Increase injection amplitudes and look for harmonics in odd places. In LLO, PCALY would have harminc sidebands and various frequencies. However due to the choice of frequencies, those never coincided with other injected frequencies. In a quick check I saw that Jeff implemented my suggested list of frequencies at the start of the year - so I hope to see that this will not be an issue.
- We will aim for around 50% of the effective injection SRN (scaled by increased injection lengths, the amplitudes would be lower), and then analyse the data to selectively increase amplitudes where needed, to get results comparable to the old dtt templates.
I have built a set of injection templates in my gitlab which take 20 minutes each to run. I'm currently testing a version of my simuLines that is supposed to catch locklosses and ramp everything down, but if there is an issue we can revert to the previous version that doesn't do that, which is in an svn directory.
The news hot-off-the-press is that Louis implemented support for my file products in the pyDARM report generation and it looks good for some of our LLO data.
Me, Louis and maybe Jeff remotely; have planned a time section on, tentatively, Wednesday morning 10 am in LHO time to run a number of these and get this working there.