Virgo Logbook

Detector Operation (Operations Report)

berni - 23:03 Tuesday 21 March 2023 (59363)

Operator Report - Afternoon shift

The first part of the shift was dedicated to complete the work on IMC Vertical Accelerometer Recovery and on SIB1 (Boschi, Ruggi).

Then at 17:00 UTC an earthquake of M 6.5 in Afghanistan shaked all the suspensions and opened SIB2 and SNEB; SNEB was easily closed while for SIB2 it was necessary the help of Alessandro.

The ITF recovery started around 18:00; CARM_NULL_1F was achieved at 18:24 UTC. The lock was achived using only two coils of the WI suspension.

Once locked we realized that the structure at 370Hz was very high thus the crew started to investigated on the possible source of this noise; investigation still in progress at the end of the shift.

At 21:56 UTC it was started the ABSORPTION_MEASUREMT.

SUSP

MC horizontal and vertical loop left open.

Images attached to this report

59363_1679436161_Screenshot 2023-03-21 at 23-02-28 DMS Event Monitor.png

Comments to this report:

carbognani - 23:41 Tuesday 21 March 2023 (59364)

It looks like this time the absorption measurement started correctly with 1min delay between reference and live acquisition:

2023-03-21 22h25m24 UTC Parsed message: ['-r DET /virgoDev/Sa/TCS/cfg/test/DET.cfg']
2023-03-21 22h25m24 UTC String parameter: '-r DET /virgoDev/Sa/TCS/cfg/test/DET.cfg'
2023-03-21 22h26m27 UTC Received RUN message from TCS_MAIN
2023-03-21 22h26m27 UTC Parsed message: ['-l DET /virgoDev/Sa/TCS/cfg/test/DET.cfg']
2023-03-21 22h26m27 UTC String parameter: '-l DET /virgoDev/Sa/TCS/cfg/test/DET.cfg'

images are being acquired under the right directory: /data/tcs/buffer/test/HWS-RC/DET/20230321T2325/

carbognani - 4:04 Wednesday 22 March 2023 (59365)

Measurements have ended at iteration 215 (instead of completing all 225) with the same message from the post-processing library regarding finding centroid. Collection of "too dark" image is once again to be suspected. Experts should confirm.

ballardin - 9:43 Wednesday 22 March 2023 (59369)

From my side I can confirm that something happened between the last image of group 214 ( LT: 2023-03-22 03:48:09) and the first image of group 215 (LT: 2023-03-22 03:49: 20).

Images attached to this comment