Naoki, Vicky, Camilla

Before cooling down OM2 next week, we took LSC/ASC/jitter noise injection with hot OM2 in 74681. We ran the noise budget using the following time. The result is attached.

UTC: 2023-12-10 20:41:02 UTC
GPS: 1386276080

In this noise budget, we set 16dB generated squeezing, which is calculated by NLG calculator. The injection loss is set to 0.073, which is known loss of OPO, HAM7, OFI. The phase noise is set to 25 mrad, which is measured by NLG sweep on DARM in 74318.

Note: The noise injection of frequency and intensity noise is not done so the coupling of frequency and intensity noise is not updated since August in 72140.

Instruction of noise budget

• The script of noise budget plot is in /ligo/gitcommon/NoiseBudget/aligoNB/production_code/H1/lho_all_noisebudgets.py. To run the script, you need conda activate aligoNB
• The plot is saved in /ligo/gitcommon/NoiseBudget/aligoNB/out/H1/lho_all_noisebudgets
• To change the gps time when you want to run the noise budget or change the quantum (squeezing) parameter file you want to refer, you should change /ligo/gitcommon/NoiseBudget/aligoNB/production_code/gps_reference_times.yml
• The quantum parameter file is saved in /ligo/gitcommon/NoiseBudget/aligoNB/aligoNB/ifos