Virgo Logbook

Upon arrival, ITF was Locked in LN3 and BNS Range ~44 Mpc. The issue was to check the SQZ subsystem, Zendri asked us to wait to engaging it.
Meanwhile, the FoV of SDB2 was increasing since this morning, so, with Bertolini, we decided to restore the standard position acting on Motors. The operation has been concluded at 14:22 UTC.
Science Mode set.
15:31 UTC SQZ Injected successfully. BNS Range increased up to ~48 Mpc.

GRB
21:49 UTC - [gracedb] Fermi event created: E356793. Alert reset at 21:51 UTC.

Guard Tour (UTC)
14:00 - 14:30;
16:16 - 16:43;
18:00 - 18:21;
20:03 - 20:28;

Sub-system reports

Air Conditioning
ACS fan in UPS TB got stuck. The environmental temperature of the room increased in the last 2 days reaching over 29C (DMS threshold) I contacted ACS and Electricity experts and I reactivated it at 18:50 UTC (plot2). The problem is that the machine is very noisy and not efficient. An intervention of an external company is foreseen for Monday afternoon.

DMS
14:00 UTC - Subflags Shelved under request of Pasqualetti:
- VAC_TUBE1800W..P22ST
- VAC_TUBE1800W..PR1
- VAC_TUBE1800W..V21ST
- VAC_TUBE1800W..V22ST

SBE
14:00 UTC - SBE_SDB2_ACT_F0V out of range. With SBE expert we restored the correct position but it is increasing again. To be monitor in the next hours. (plot1)

Pending actions

Air Conditioning
(07-12-2019 19:00 - ) check the behavior of INF..TB_UPS_TE,

DAQ
(07-12-2019 16:00 - ) At next unlock unplug and replug MuxDemux 11in DAQ Room in order to restore environmental channels (grey flags on DMS) - contact DAQ OnCall.

SBE
(07-12-2019 19:00 - ) check the behavior of SBE_SDB2_ACT_F0V.

Oncall events

Air Conditioning
(07-12-2019 18:45 - 07-12-2019 19:00) Operator on site with expert from remote
Status: Ended
Description: Failure of TB AC fan in UPS TB.

Electricity
(07-12-2019 18:45 - 07-12-2019 19:00) Operator on site with expert from remote
Status: Ended
Description: Failure of TB AC fan in UPS TB.

SBE
(07-12-2019 16:00 - 07-12-2019 16:30) From remote
Status: Ended
Description: SBE_SDB2_ACT_F0V out of range.

SQZ
(07-12-2019 16:00 - 07-12-2019 16:30) Operator on site with expert from remote
Status: Ended
Description: SQZ Injected successfully.

Vacuum
(07-12-2019 16:30 - 07-12-2019 17:00) From remote
Status: Ended
Description: Subflags Shelved under request of Pasqualetti