Reports until 17:58, Tuesday 17 January 2023
H1 TCS
georgia.mansell@LIGO.ORG - posted 17:58, Tuesday 17 January 2023 - last comment - 15:49, Thursday 19 January 2023(66853)
CO2 test tonight

I've set up a CO2 power stepper to run tonight, if the IFO is at NLN. The test starts at 9pm and will:

The total script should take 10 hours to run (done at 7am) and is running on ZOTWS24 (in the CUR).

 

The code is in:

/opt/rtcds/userapps/trunk/tcs/common/scripts/power_adj_scripts/co2_power_stepper.py

I've got the script running in 2 tabs, one for ITMY and one for ITMX.

Comments related to this report
georgia.mansell@LIGO.ORG - 17:56, Wednesday 18 January 2023 (66874)
Link

Set up this test to try to run again at 9pm tonight  on zotws19

daniel.brown@LIGO.ORG - 15:05, Thursday 19 January 2023 (66896)
Link

Demodulated frequency injection lines during this CO2 test attached

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georgia.mansell@LIGO.ORG - 15:49, Thursday 19 January 2023 (66898)
Link

Here are the buildups during this CO2 test. With

  • Lower CO2X, nominal CO2Y: increased circulating power in the Y arm, slight increase in REFL_LF, increase in POP18 to a point, looks like we went over a peak
  • Lower CO2X, high CO2Y: further increase in Y arm circulating power, decrease in kappa_C, and F_C, decrease in REFL, decrease in POP18, increase in POP9
  • Lower CO2X, lower CO2Y: Decrease in PR gain, arm circulating powers, good for POP18 and POP90, REFL increase

 

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