Reports until 16:59, Monday 21 October 2024
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camilla.compton@LIGO.ORG - posted 16:59, Monday 21 October 2024 - last comment - 17:28, Monday 21 October 2024(80804)
Automatic DARM Offset Steps

Elenna, Camilla

Ran the automatic DARM offset sweep via Elenna's instructions (took <15 minutes):

cd /ligo/gitcommon/labutils/darm_offset_step/
conda activate labutils
python auto_darm_offset_step.py

DARM offset moves recorded to /ligo/gitcommon/labutils/darm_offset_step/data/darm_offset_steps_2024_Oct_21_23_37_44_UTC.txt

Comments related to this report
camilla.compton@LIGO.ORG - 17:02, Monday 21 October 2024 (80805)
Link

Reverted the attached tramp sdf diffs afterwards, see attached. Maybe the script needs to be adjusted to automatically do this.

Images attached to this comment
elenna.capote@LIGO.ORG - 17:28, Monday 21 October 2024 (80806)
Link

I just ran Craig's script to analyze these results. The script fits a contrast defect of 0.742 mW using the 255.0 Hz data and 0.771 mW using the 410.3 Hz data. This value is lower than the previously 1 mW on July 11 (alog 79045), which matches up nicely with our reduced frequency noise since the OFI repair (alog 80596).

I attached the plots that the code generates.

This result then estimates that the homodyne angle is about 7 degrees.

Non-image files attached to this comment