Reports until 16:36, Monday 06 July 2026
H1 SEI
arnaud.pele@LIGO.ORG - posted 16:36, Monday 06 July 2026 (90911)
HAM3 (new) CPS check

Checked spectrum over the weekend for the newly installed CPS on HAM3. Noise looks great.

Horizontal CPS noise is at 3e-10m/sqrt(Hz) and Vertical CPS noise is at 4e-11m/sqrt(Hz) >1Hz (see figure 1) which is what we expect from https://dcc.ligo.org/LIGO-T0900450

Only the corner 1 GS13 were plugged (see figure 2), so I could not verify if those looked ok or not.

This calibrated dtt template lives under : /ligo/svncommon/SeiSVN/seismic/HAM-ISI/H1/HAM3/Data/Spectra/Undamped/h1_ham3_all_sensors.xml

Images attached to this report