Reports until 06:14, Wednesday 24 April 2019
H1 General
edmond.merilh@LIGO.ORG - posted 06:14, Wednesday 24 April 2019 - last comment - 06:23, Wednesday 24 April 2019(48723)
Lockloss

11:45 Lockloss occurred without Verbal Alarm warning as it seems that VA had stopped.

12:25 FIrst re-lock attempt failed at ENGAGE_ASC_FOR_FULL_IFO - "H_T_T_S"

RF 90 started to increase, leading into the loss, causing a dip in RF 18

Second attempt is looking better. ASC loops took approx 6 minutes to converge.

13:09 increased H1:LSC-REFL_SERVO_IN1GAIN up 3dB from 9 to 12 at NLN upon RF 9/18 trace settling at 47 cts (on Craig's tutelage)

ETMY violin modes 1 and 6 elevated but ringing down. I increased the gain on Mode 6 to .6 from 0

13:10 H1 back to Observing

 

Comments related to this report
edmond.merilh@LIGO.ORG - 06:23, Wednesday 24 April 2019 (48724)