aLIGO LHO Logbook

H1 SUS

camilla.compton@LIGO.ORG - posted 15:45, Monday 18 March 2024 - last comment - 10:12, Friday 29 March 2024(76492)

In-lock Charge Measurements Frequencies adjusted

Artem, Camilla

After suggestion from Jeff and Edgard, we've adjusted the In-lock Charge Measurements Frequencies to avoid the 14Hz Roll mode. Measurements were taken last week 76331 and are scheduled for tomorrow AM. We check that results are not effected by this change tomorrow. Reminder to avoid 11Hz for ETMX 68034.

	Old	New
ITMX	14Hz	13Hz
ITMY	15Hz	15Hz
ETMX	13Hz	12Hz
ETMY	12Hz	12Hz

Comments related to this report

artem.basalaev@LIGO.ORG - 10:12, Friday 29 March 2024 (76790)

Link

Before we all forget, just to mention it here: frequencies were reverted back to defaults (left column) before latest attempt of in-lock charge measurements (that caused lock loss 76604). The idea was to repeat "old" setup before trying new one, but we never got the chance before lock loss. Whoever follows up on this, please try to set new drive frequencies (on the right) at some point.