Reports until 19:36, Thursday 28 August 2025
H1 SUS (ISC, SEI)
oli.patane@LIGO.ORG - posted 19:36, Thursday 28 August 2025 (86640)
Quick look at ASC with SR3 and PR3 Estimators ON

Here's a quick look at ASC signals with different configurations of the SR3 and PR3 estimators on and off. I decided to plot two comparison times with everything on to see what changes are due to the estimators and what might be due to just a bad time selection. I still need to compare to another time with all estimators off to confirm that noise decreases are due to the estimator and not other factors. Because we only have the one comparison time right now for the Estimators OFF time, any improvements in noise seen are tentative and not for sure yet.

Comparison times:
2025-08-28 18:58 UTC - P&Y estimators for both SR3 and PR3 OFF (RED)
2025-08-28 15:15 UTC - Only SR3 P&Y Estimators ON (BLUE)
2025-08-28 20:12 UTC - Both SR3 P&Y and PR3 P&Y Estimators ON (GREEN)
2025-08-28 22:00 UTC - Both SR3 P&Y and PR3 P&Y Estimators ON (BROWN)

CHARD
CHARD_P_OUT
    - Not much change
CHARD_Y_OUT
    - Peaks around 3 Hz are maybe a bit more pronounced than before

DHARD
DHARD_P_OUT
    - Possibly lower noise 4-6 Hz?
DHARD_Y_OUT
    - Not much change

INP1
INP1_P_OUT
    - Possibly some improvement between 2-3 Hz?
INP1_Y_OUT
    - Noise worse around 3 Hz?

MICH
MICH_P_OUT
    - Noise much worse between 0.6-0.9 Hz
    - Noise much worse between 2.5-5 Hz
MICH_Y_OUT
    - Noise better 1.5-3 Hz?

PRC2
PRC2_P_OUT
    - Broadband decrease in noise 1-7 Hz?
PRC2_Y_OUT
    - Decrease in noise 3-6 Hz?

SRC1
SRC1_P_OUT
    - 2.5 Hz peak lowered??
SRC1_Y_OUT
    - Really good reduction in noise according to GREEN between 1.5-2.5 Hz?

SRC2
SRC2_P_OUT
    - Possibly lower noise 4-6 Hz?
SRC2_Y_OUT
    - Possibly lower noise 4-6 Hz?

 

Images attached to this report