aLIGO LHO Logbook

H1 ISC

camilla.compton@LIGO.ORG - posted 10:27, Friday 05 July 2024 - last comment - 13:53, Tuesday 09 July 2024(78879)

Bruco ran for 2024/07/05 13:50UTC

Bruco ran for last night's 159MPc range (instructions from Elenna), using command below. Results here.

python -m bruco --ifo=H1 --channel=GDS-CALIB_STRAIN_CLEAN --gpsb=1404222629 --length=1000 --outfs=4096 --fres=0.1 --dir=/home/camilla.compton/public_html/brucos/GDS_CLEAN_1404222629 --top=100 --webtop=20 --plot=html --nproc=20 --xlim=7:2000 --excluded=/home/elenna.capote/bruco-excluded/lho_DARM_excluded.txt

Can see:

CHARD_P is bad 10-30Hz and CHARD_Y is very bad < 25Hz
PRCL bad coherence 10-20Hz
SRCL looks good and MICH only has a little coherence 10-20Hz
OMC ASC signals dominate <16Hz, maybe this is expected....
HAM1 signals are high 10-30Hz, from PRCL coupling?

Comments related to this report

sheila.dwyer@LIGO.ORG - 13:53, Tuesday 09 July 2024 (78976)

Link

There are several interesting things at around 30Hz (and around 40Hz) in this BRUCO, which might all be related to some ground motion or accoustic noise witness.

LVEAFLOOR accelerometer

several channels related to HAM2 motion like MASTER_H2_DRIVE. Around 38-40 Hz BRUCO picks out lots of HAM2 channels, and seems to preffer HAM2 over any other chamber. It might be worth doing some HAM2 injections.

This time that Camilla chose was after the PSL alignment shift, but before we moved the beam on PR2 last Friday.