rahul.kumar@LIGO.ORG - posted 12:53, Tuesday 02 April 2024 (76881)
ETMX ESD bias voltage sign flipped for 3hrs this morning
This morning I flipped the sign (after talking to the Operator) of the ETMX ESD lock bias voltage from -450V to +450V for 3hrs to reduce the charge build up in the optic.
After 3hrs I reversed the sign and set it to nominal.
ndscope trends are attached below.
Images attached to this report
