camilla.compton@LIGO.ORG - posted 15:31, Friday 22 March 2024 - last comment - 14:13, Sunday 24 March 2024(76630)
A2L stepper scripts to run over the weekend, ETMY 6am tomorrow
Code located in /ligo/gitcommon/labutils/beam_spot_raster/a2l_gain_stepper.py
Current spot positions (e.g. H1:SUS-ITMX_L2_DRIVEALIGN_P2L_SPOT_GAIN):
| Optic | P2L | Y2L |
| ITMX | -0.8 | 2.1 |
| ITMY | 0 | -1.9 |
| ETMX | 4 | 4.4 |
| ETMY | 4.6 | 3.2 |
It will step the nominal values up and down 0.4 in 0.2 steps / 15 minutes. e.g. starting a2l + [-0.2, -0.4, -0.2, 0, 0.2, 0.4, 0.2, 0]
I've set up a script to run this on ETMY at 6am to 10am tomorrow (23rd) in a tmux session on cdsws26, will only run if the IFO is at NLN (>=600) at 6am.
Ryan S will try to find times (4 hours each) to run this on the other optics ITMX and ETMX over the weekend, command below. We don't have beam spot control on ITMY so can skip that.
>> python /ligo/gitcommon/labutils/beam_spot_raster/a2l_gain_stepper.py ETMY --start 'now'
The ETMY A2L stepper script made it about 3/4 of the way through today; output in alog76655. We can find a time to re-run this if we need the full sweep.
Since there won't be time today before the end of commissioning allotment, I've set the A2L script to run for ETMX tomorrow morning at 06:00 PDT in the same tmux session on cdsws26.
Today I ran the A2L gain stepper scripts for ETMX and ITMX. The ETMX steps ran from 13:00 to 17:00 UTC and the ITMX steps ran from 17:03 to 21:03 UTC.