Reports of 58934
Virgo Runs (O4b)
berni - 23:14 Thursday 20 June 2024 (64558) Print this report
Operator Report - Night shift

DRAFT  REPORT - shift in progress; the report will be finalized and convalidated at the end of the shift

 

ITF found in Science mode.

Virgo Runs (O4b)
gherardini - 23:00 Thursday 20 June 2024 (64556) Print this report
Operator Report - Afternoon shift

In this afternoon shift science mode stopped from 14:34UTC to 14:50UTC because of squeezing disengage and SQB1 control vertical control saturated and from 15:00UTC to 19:00UTC for commissioning (test of DARM and DIFFp TY control filters #64557 and NI CP noise injection #64554).

- guard tours(UTC):
17:41 --> 18:07
19:06 --> 19:34

Sub-system reports

SBE
at 14:34UTC the SQB1 position control was opened by the guardian; control closed after re adjust of F1 vertical position;

Images attached to this report
AdV-TCS (CO2 laser projector)
nardecchia, gherardini - 21:17 Thursday 20 June 2024 (64554) Print this report
NI CO2 laser noise injections PART 2

This afternoon, we completed the NI CO2 noise injections that started on 30th May  [64386].  The attached file lists the frequency, start time, and GPS coordinates of the injections, each lasting 5 minutes.

I took advantage of the last quarter of an hour of commissioning time to repeat the injections at frequencies 29, 68, and 85 Hz.

The data will be analyzed in the next days.

NOTE: I slightly adjusted the WI DAS outer ring power at 18.15.17 UTC (increased by 3 %).

Non-image files attached to this report
AdV-COM (AdV commissioning (1st part) )
pinto, ruggi, gherardini - 19:22 Thursday 20 June 2024 (64557) Print this report
test of DARM and DIFFp TY control filters

Today's 1 hr shift was meant to resume the leftover activities concerning the LF optimization. In details we wanted to try:

1) boost control filter for DARM (improve the LF loop accuracy of a factor 2 up to 5 Hz);

2) DIFFp TY rolloff to reduce the control noise reintroduction starting from 15-20 Hz, since from the last ASC projections we noticed an excess of coupling of such loop with Hrec.

At the beginning of the shift (17.04) we first tried the new control filter for DARM. We unlocked immediately after the start of the ramp of the filter swap. We used a 100 second ramp since in the past when we tried a new DARM filter with a shorter ramp (i.e. 5 sec), we unlocked immediately probably due to a too quick discharge/charge of the integrator of the filter. By using a longer ramp we avoided this issue. However this time it didn't work. By looking at the data and at the filter gain the reason of the unlock is still not clear. Data will be better analyzed.

Profiting of the unlock we loaded the new DIFFp TY control filter and we tried it from the beginning of the loop engagement (CARM null 3f). The filter engagement worked fine, however we didn't have the chance to see its effect in LN3 since the ITF kept unlocking during the ACQUIRE LN3 step. The reason of the unlock is not entirely clear, we only noticed a weird behaviour of BS TY loop right before the unlock (jumps on the error signal) followed by a flash on B1p DC, see Fig.1 reporting the unlock of 16.23.53 for reference. We will look carefully at the data.

We reverted the filter of DIFFp TY to the nominal one and left the ITF locking for the next activities.

 

Images attached to this report
Virgo Runs (O4b)
amagazzu - 15:12 Thursday 20 June 2024 (64553) Print this report
Operator Report - Morning shift

ITF found in LOW_NOISE_3_SQZ and in Science Mode. It kept the lock for the whole shift.
ITF left locked.

DMS 
The process InfraMoniAlarmed was restarted twice (8:54 UTC, 9:16 UTC) in order to update NEB/WEB Heater thresholds under request of Soldani.

Images attached to this report
Virgo Runs (O4b)
Sposito - 6:56 Thursday 20 June 2024 (64552) Print this report
Operator Report - Night shift

I found ITF in SCIENCE; It remained locked for the whole shift.

Guard Tour (UTC):

  • 20:10 - 20:43
  • 21:32 - 22:01
  • 21:13 - 21:46
  • 00:30 - 00:58
  • 01:30 - 01:59
  • 03:00 - 03:27

NO DMS Events

Images attached to this report
Virgo Runs (O4b)
berni - 23:00 Wednesday 19 June 2024 (64551) Print this report
Operator Report - Afternoon shift

ITF found in Science mode.

From 14:50 UTC to 14:52 UTC ITF in Adjusting mode; Ilaria contacted the control room because she noted a drift in the TCS NI CO2 power so we set Adjusting mode to recover the correct power.

 

Guard tours (time in UTC)

17:30 - 18:00; 19:06 - 19:42

Images attached to this report
Virgo Runs (O4b)
kraja, cortese - 16:08 Wednesday 19 June 2024 (64550) Print this report
Comment to Operator Report - Night shift (64516)
We performed all the necessary checks and we didn't detect any network anomaly in the time-window when this issue took place.
AdV-DAQ (Calibration)
verkindt - 15:32 Wednesday 19 June 2024 (64549) Print this report
Comment to Hrec config and BNS range at 60 Mpc (64532)

Comparing the sensitivity of March 8 00h00 UTC (where reprocessed h(t) gives a BNS range around 58 Mpc) and June 18 00h00 UTC (where BNS range is around 55 Mpc),
we can see that the main difference is in the frequency band 20-60 Hz  , before noise subtraction (hoft_raw, plot1) or after noise subtraction (hoft, plot2).

Images attached to this comment
Virgo Runs (O4b)
gherardini - 15:00 Wednesday 19 June 2024 (64548) Print this report
Operator Report - Morning shift

This morning the ITF unlocked from science at 10:53UTC, it relocked at the first attempt, science mode started at 11:34UTC.

Sub-system reports

DMS
InfraMoni and InfraMoniAlarmed stopped and restarted at 7:53UTC (update NE and WE ACS thresholds);
DMSserver stopped and restarted at 10:18UTC (update alarm notification);

Images attached to this report
AdV-SGD (FDS commissioning)
De Marco, De Laurentis (delauren), Lartaux, Vardaro, Sorrentino, Berni - 12:21 Wednesday 19 June 2024 (64547) Print this report
CC scans for different DCP values (continuation)

Goal of the shift: to continue the the measurement started the previous week (#64487)

N.B. in the morning Henning changed the MZ offset to +0.06 V as he did in the last shift.

 

14:15 ITF in LOW_NOISE_3
14:28:08 ITF in ASQZ (phi0 = 2.5 rad)
14:33:19 ITF in SQZ (phi0 = 0.9 rad)
14:40 CC scan started DCP = 195 Hz

15:10 DCP @305 Hz in 1800s (30 mins)
15:52:39 ITF in SQZ (phi0 = 0.9 rad)
15:58:04 ITF in ASQZ (phi0 = 2.5 rad)
16:11 CC scan started DCP = 305 Hz
17:04 enabled loop for SRM alignment, DCP ~ 420 Hz

17:10 - 17: moving the SQB1_TX and SQB1_X d.o.f. to recover SQZ alignment

  • Initial positions: SQB1_LC_X = -3200,    SQB1_LC_TX = 330
  • New positions (set partially following the entry #63558): SQB1_LC_X = SQB1_LC_TX = 60

17:39 CC scan started SRM aligned (DCP ~ 410 Hz)
18:09:28 ITF in SQZ (phi0 = 0.9 rad)
18:14:35 ITF in ASQZ (phi0 = 2.5 rad)

We decided to move the squeezer to its nominal configuration for Science mode and we performed another scan:

18:22:16 MZ offset from +0.06 V to +0.03 V
18:23:06 OPA Temp_S from -3.39 V to -3.375 V
18:29 CC scan started SRM aligned (DCP ~ 400 Hz) and SQZ level as in Science mode

18:56 ITF unlock and we recovered the SQB1 position
We left the ITF to relock after that, and hardware interventions were ongoing.

 

Images attached to this report
Virgo Runs (O4b)
Sposito - 6:48 Wednesday 19 June 2024 (64546) Print this report
Operator Report

I found ITF in SCIENCE; It remained locked for the whole shift.

Guard Tour (UTC):
21:06 - 21:35
23:00 - 23:29
01:25 - 01:55
03:20 - 03:50

Images attached to this report
Virgo Runs (O4b)
berni - 22:59 Tuesday 18 June 2024 (64540) Print this report
Operator Report - Afternoon shift

ITF found in LN3_SQZ and in Science mode.

At 14:00 UTC started the planned commissioning activity of Squeezing loss vs SR alignment; ITF unlocked at 18:56 UTC because of the activity.

At 19:15 UTC the commissioning activity was completed and I set Troubleshooting mode to recover the MC,SR coil corrections (see SUSP section) and the BPC correction (see INJ section); all the problems were fixed at 19:45 UTC and I started to relock the ITF.

ITF relocked after a manaul prealignment of the SR; Science mode set 20:39 UTC.

 

INJ

The DMS was reporting a red flag for BPC BsX_TY; when the ITF unlocked (18:565 UTC) Piernicola from remote recovered the correction.

 

SUSP

The DMS was reporting an alert for high correction for SR and MC F0 coil; I contacted Valerio and Paolo and we decided to wait for an unlock (for the SR it was necessary switch on the motors).  When the ITF unlocked (18:56 UTC) I went in the CB to switch on the SR motor crate and Valerio from remote recovered the coil corrections for SR and MC. In agreement with Valerio we left the SR motor crate ON.

 

HVAC

Many red flags for in the DMS; in the afternoon Davide changed some set points and provided new thresholds for the DMS.

 

Calibration

Red flag for PCal_NE_Ampli.

 

Guard tours (time in UTC)

17:30 - 18:00; 19:00 - 19:30

Oncall events

ISYS
(18-06-2024 19:30 - 18-06-2024 20:00) From remote
Status: Ended
Description: recover BPC correction

SUSP
(18-06-2024 19:00 - 18-06-2024 19:30) From remote
Status: Ended
Description: recover SR and MC correction

Images attached to this report
On-call intervention (General)
spinicelli - 22:52 Tuesday 18 June 2024 (64545) Print this report
Comment to On-call intervention (64544)

The figure

Images attached to this comment
On-call intervention (General)
Oncall-system - 22:52 Tuesday 18 June 2024 (64544) Print this report
On-call intervention

The following report has been submitted to the On-call interface.

On-call events -> Injection System

Title: BPC recentering by moving PR X and Y position

Author(s): spinicelli

Called at: 21:20, 18-06-2024, by: Berni
Remote intervention: Started: 21:20, 18-06-2024; Ended: 22:30, 18-06-2024
On-site intervention: Started: ; Ended:
Status: Resolved
Operator when issue resolved: Berni

Details:

This morning after the usual maintenance operations, once fully relocked, the BCP_TY correction started to quickly drift close to its limit.
Since the ITF unlocked in the evening, the operator called me and we profited of this time to move the transversal position of the PR (+40µm in X, +10µm in Y ).
As a result, we reduced the BsX_TY correction but with a slightly increased horizontal miscentering on the ITMs.
Checking after a full lock acquisition in LN3, BPC corrections seems to be fine.

* Note that any files attached to this report are available in the On-call interface.

Comments to this report:
spinicelli - 22:52 Tuesday 18 June 2024 (64545) Print this report

The figure

Images attached to this comment
Suspension Electronics (Suspension Electronic)
fiori, paoletti, tringali - 19:00 Tuesday 18 June 2024 (64543) Print this report
Comment to switch off of all motor crates (64534)

A list of the on/off status of motor crates panel switches before today global switch off follows.

From top to bottom:

  • SIB1
    • n.1 ON
    • n.2 ON
    • n.3 ON
  • PR
    • n.1 ON
    • n.2 ON
    • n.3 ON
    • n.4 OFF
  • WI
    • n.1 ON
    • n.2 ON
    • n.3 ON
    • n.4 OFF
    • n.5 OFF
  • BS
    • n.1 ON (we physically disconnected the power cable because when in "OFF" position the front panel light turned on)
    • n.2 ON
    • n.3 OFF
  • NI
    • n.1 ON
    • n.2 ON
    • n.3 ON
    • n.4 OFF
    • n.5 OFF
  • SR
    • n.1 ON
    • n.2 ON
    • n.3 OFF
  • SDB1
    • n.1 ON
    • n.2 ON
    • n.3 ON
  • WE
    • n.1 ON
    • n.2 ON
    • n.3 OFF
    • n.4 OFF
    • n.5 OFF
  • NE
    • n.1 ON
    • n.2 ON
    • n.3 ON
    • n.4 OFF
    • n.5 OFF
Suspension Electronics (Suspension Electronic)
fiori, paoletti, tringali - 18:44 Tuesday 18 June 2024 (64541) Print this report
Comment to switch off of all motor crates (64534)

After relocking we notice an improvement at a number of peaks in hrec in the range 30 to 60 Hz. In more detail:

In the region around 70 Hz (where other modes of the F7 are located) no clear effects are seen (Figure 4).

Images attached to this comment
Online Computing (Online System Processes)
poulton - 17:57 Tuesday 18 June 2024 (64539) Print this report
Updated IGWNAlert listener version

There was a problem with the IGWNAlert listener, which did not receive an alert for the S240615dg event. This was due to the igwn_alert client and the hop server packages being older versions. A dedicated conda environment has been created for this process in /virgo/conda/envs/igwnalert-env and seems to have resolved the problem. I will now monitor this process to see if it is able to receive alerts.

Vacuum (Terminal north)
Vacuum - 16:47 Tuesday 18 June 2024 (64542) Print this report
Comment to NE pump substitution (64259)

During the maintenance break of this morning, we turned off the backup turbo pump of NE tower, which had been left on for safety reasons during all this period, running in parallel with the principal pump, recently replaced (see the main entry).

In conclusion, there is now only one turbo pump running permanently on the tower, which corresponds to the normal configuration .

Virgo Runs (O4b)
gherardini - 14:58 Tuesday 18 June 2024 (64531) Print this report
Operator Report - Morning shift
The shift was dedicated to maintenance started at 6:00UTC, here a list of the activity reported to the control room:

- standard vacuum refill from 6:00UTC to 10:00UTC (VAC Team);
- cleaning of central building (Ciardelli with external firm: from 6:00UTC to 10:30UTC);
- INJ: check of IMC working point and position from 7:18UTC to 7:40UTC;
- ENV: suspension motor crate switch off (Fiori, Paoletti #64534);
- DET: OMC Lock in single bounce configuration from 6:36UTC to 6:42UTC;
OMC scan in single bounce configuration from 6:47UTC to 7:08UTC;
- TCS: chiller check and refill (Ciardelli 6:55UTC);
thermal camera reference from 8:40UTC;
power checks 8:55UTC:
CH IN OUT
WI 0.287 0 0.214
NI 0.649 0.057 0.608

maintenance activity completed at around 10:40UTC, ITF relocked at the first attempt and science mode started at 11:49UTC.
Images attached to this report
AdV-DAQ (Data collection)
rolland - 12:19 Tuesday 18 June 2024 (64538) Print this report
Comment to DAQ : missing frames - network issues ? (64509)

This morning, I found the process PCal_NE_Ampli complaining about "Broken pipe". Indeed, the NetCom switch ethcali1 (to convert from RS232 to Ethernet) is no more available via ping. It is located in NE building, in the calibration rack (leftmost rack).  This started on Friday, 14 June at 18h31m UTC. Can this be related to the network issue seen a bit earlier, or is it independant?

The process has been stopped, and cannot restart since ethcali1 is not available on the network. 

This process is used to monitor the PCal laser amplifier, and mainly to switch on/off the pump diode from remote. It is not critical and we can run without it for some time, but it will be useful to get it back alive soon.

 

2024-06-14-18h31m23-UTC>ERROR..-[Errno 11] Resource temporarily unavailable
[....]
2024-06-14-18h47m04-UTC>ERROR..-[Errno 11] Resource temporarily unavailable
2024-06-14-18h47m05-UTC>ERROR..-[Errno 110] Connection timed out
2024-06-14-18h47m06-UTC>ERROR..-[Errno 32] Broken pipe
 
Virgo Runs (O4b)
sentenac - 12:15 Tuesday 18 June 2024 (64537) Print this report
Comment to Operator Report - Night shift (64516)
Looking at vacuum supervisor log data during the crash of the VAC_LINK rack I discovered that several racks were affected by the same sequence loss of network connection in the same interval (attached plot). It concerns the racks : VAC_CRYOLINK, VAC_SQZ0N, VAC_SQZ300N, VAC_SQZDET1, VACSQZDET2 all together with VAC_LINK.

Computing may check the related routes of the following racks:
vacsqz0n
vacsqz300n
vacsqzdet1
vacsqzdet2
vaclinkprsr
vaccryoibdet
Images attached to this comment
AdV-ISC (Commissioning up to first full interferometer lock)
mantovani, pinto, spinicelli - 10:58 Tuesday 18 June 2024 (64535) Print this report
WI down condition controller updated

This morning we updated the WI down condition by reproducing exactly the same logic as for the NI (using at the moment the same controller parameters).

We restarted both etalon process at 8:23UTC.

During the next days, we will keep monitoring the WI loop in order to fine tune the loop gain.

Suspension Electronics (Suspension Electronic)
fiori, paoletti, boschi - 10:27 Tuesday 18 June 2024 (64534) Print this report
switch off of all motor crates

This morning we switched off all motor crates of CEB, NEB and WEB from the panel switch. Upon relocking we can test if this has an effect in reducing some of the existing structures  in the ranges 41-43 and 47-49 Hz.

Comments to this report:
fiori, paoletti, tringali - 18:44 Tuesday 18 June 2024 (64541) Print this report

After relocking we notice an improvement at a number of peaks in hrec in the range 30 to 60 Hz. In more detail:

In the region around 70 Hz (where other modes of the F7 are located) no clear effects are seen (Figure 4).

Images attached to this comment
fiori, paoletti, tringali - 19:00 Tuesday 18 June 2024 (64543) Print this report

A list of the on/off status of motor crates panel switches before today global switch off follows.

From top to bottom:

  • SIB1
    • n.1 ON
    • n.2 ON
    • n.3 ON
  • PR
    • n.1 ON
    • n.2 ON
    • n.3 ON
    • n.4 OFF
  • WI
    • n.1 ON
    • n.2 ON
    • n.3 ON
    • n.4 OFF
    • n.5 OFF
  • BS
    • n.1 ON (we physically disconnected the power cable because when in "OFF" position the front panel light turned on)
    • n.2 ON
    • n.3 OFF
  • NI
    • n.1 ON
    • n.2 ON
    • n.3 ON
    • n.4 OFF
    • n.5 OFF
  • SR
    • n.1 ON
    • n.2 ON
    • n.3 OFF
  • SDB1
    • n.1 ON
    • n.2 ON
    • n.3 ON
  • WE
    • n.1 ON
    • n.2 ON
    • n.3 OFF
    • n.4 OFF
    • n.5 OFF
  • NE
    • n.1 ON
    • n.2 ON
    • n.3 ON
    • n.4 OFF
    • n.5 OFF
Detector Characterisation (Glitches)
robinet - 9:57 Tuesday 18 June 2024 (64533) Print this report
Online Omicron restarted

This morning I restarted all online Omicron processes, using the new version v3r2p0. The changes only concerns the OnlineOffline process which merges and moves Omicron trigger files from /data/online/omicron/V1/ to /data/prod/omicron/V1/. Now, a lock file is produced in /data/prod/omicron/V1/ while the process is active. The lock file name is:

/data/prod/omicron/V1/oo.[GPS].lock

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