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Virgo Runs (C11)
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mwas, flaminio - 12:24, Wednesday 17 October 2018 (43124)Get code to link to this report
Comment to DARM peaks zoology (Click here to view original report: 43071)
Something even more puzzling about the 55.55Hz harmonic lines, is that periodicity seems to short with frequency.
The 111.1Hz line turns on/off with a period of ~2 hours and 333.3Hz line has period of ~45 minute. The other harmonics are in between, it would be interesting to check if the period is inversely proportional to the harmonic line frequency.

AdV-DAQ (Calibration)
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rolland,verkindt, estevez - 12:20, Wednesday 17 October 2018 (43122)Get code to link to this report
Timing calibration of B1p and B1 photodiodes

Looking at the data from Sept 25th around 16h15 UTC (logbook 42949) with the IRIG-B sent to the B1p_PD1 and B1_PD2 photodiodes, and other standard data, we found the following delays for B1 and B1p sensing to be taken into account in the calibration.

 

B1p

The first table gives the delays measured for B1p_PD1 channels, to be taken into accont in the actuation measurements in free swinging Michelson  (the DC_10kHz channel is an intermediate processed channel in the DeltaL reconstruction of free Michelson data).

B1p_PD1_Audio_1MHz/GPS Audio_20kHz/Audio_1MHz DC_20kHz/Audio_20kHz DC_10kHz/DC_20kHz Total:DC_10kHz/GPS
-212 µs  (+/- 4) 182 µs (+/-10) 0 0 -30 µs (+/-15)

Note that during O2, the delay Audio_20kHz/Audio_1MHz was 152 µs.

The 1MHz/GPS delay is -212 µs for B1, B1p and also for the ADC channels in the DAQroom that receive the GPS signals directly. It indicates that there is an extra delay of 200 µs in the timing distribution compared to O2.

 

B1

The second table gives similar results for B1_PD2 channel, to be taken into account in Hrec process for B1 sensing.

B1_PD2_Audio_1MHz/GPS Audio_20kHz/Audio_1MHz Blended_20kHz/Audio_20kHz Total: Blended_20kHz/GPS
-212 µs (+/- 4) 169 µs (+/-10) 0 -43 µs (+/-15)

The TF Audio_20kHz/AUdio_1MHz  is different for B1p and for B1 since the anti-alias filters used in SDB2_Photodiode are silghtly different: a simple Butterworth  on B1p signals, and the Butterworth with notches for the OMC on B1 signals.

Virgo Runs (C11)
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singh, fiori - 12:13, Wednesday 17 October 2018 (43123)Get code to link to this report
Study of bilinear noise in DARM around Mains lines

We performed an analysis similar to that described in 42880. The bumps around Mains harmonics (the bumps are especially large at odd harmonics: 150Hz, 250Hz350Hz, 450Hz  but are present also around even harmonics: 200Hz, 300Hz, 400Hz) are correlated in blind way with the low frequency component (<10Hz) of several signals (including ASC*, SBE_*LC*, Sc_*, LSC_B*_DC, SDB2_B*_PD*_56MHz*) . The channel list and the results are posted below.

We find signals ASC_DIFFp_TY and SDB2_B1s1_PD1_56MHz_I   seem to explain well most of sidebands.

Images attached to this report
43123_20181017120613_150hz.png 43123_20181017120618_200hz.png 43123_20181017120624_250hz.png 43123_20181017120629_300hz.png 43123_20181017120637_350hz.png 43123_20181017120645_400hz.png 43123_20181017120649_450hz.png
Non-image files attached to this report
Virgo Runs (C11)
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Paoletti - 11:59, Wednesday 17 October 2018 (43121)Get code to link to this report
Comment to DARM peaks zoology (Click here to view original report: 43071)

Another little bit of information: the 277.77 Hz (with its sidebands) has a periodical ampltude variation of about 50-55 minutes, as visible in the attached spectrogram

Images attached to this comment
43121_20181017115850_2771.gif
AdV-ISC (Commissioning up to first full interferometer lock)
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bersanetti - 10:38, Wednesday 17 October 2018 (43119)Get code to link to this report
Comment to 119MHz signal lock removed from WARM and NARM (Click here to view original report: 43116)

The same should be also done in MICH_LOCK.

It would be better, though, that changes to Global Control would be coordinated with the people of interest.

AdV-DAQ (Calibration)
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estevez, mours - 10:32, Wednesday 17 October 2018 (43118)Get code to link to this report
Measurements of B1p_PD1/PD2 photodiodes responses

We sent noise and lines with a LED connected to ENV_NOISE_CEB_Detlab to B1p_PD1 and PD2 to measure their response.

B1p_PD1:

  • 1223741420 to 1223741470 white noise
  • 1223741870 to 1223741905 white noise
  • 1223742160 to 1223742230 lines (1.2 Hz, 2.1 Hz, 3.2 Hz, 4.3 Hz, 5.1 Hz, 5.9 Hz, 7.1 Hz)
  • 1223742485 to 1223742520 lines (10.1 Hz, 15.1 Hz, 23.1 Hz, 30.5 Hz, 40.1 Hz, 55.1 Hz, 75.1 Hz)

B1p_PD2:

  • 1223741255 to 1223741364 white noise
  • 1223742643 to 1223742673 lines (1.2 Hz, 2.1 Hz, 3.2 Hz, 4.3 Hz, 5.1 Hz, 5.9 Hz, 7.1 Hz)
  • 1223742530 to 1223742560 lines (10.1 Hz, 15.1 Hz, 23.1 Hz, 30.5 Hz, 40.1 Hz, 55.1 Hz, 75.1 Hz)
AdV-ISC (Commissioning up to first full interferometer lock)
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mantovani, masserot - 09:54, Wednesday 17 October 2018 (43116)Get code to link to this report
119MHz signal lock removed from WARM and NARM

Since the 119MHz has been removed from the sensing I've modified the WARM and NARM.py in Metatron to remove the locking scripts with this signal (it was giving errors). Metatron has been restarted.

Comments related to this report
bersanetti - 10:38, Wednesday 17 October 2018 (43119)

The same should be also done in MICH_LOCK.

It would be better, though, that changes to Global Control would be coordinated with the people of interest.

AdV-ISC (Commissioning up to first full interferometer lock)
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mantovani, casanueva - 09:51, Wednesday 17 October 2018 (43115)Get code to link to this report
FmodErr calibration

In order to speed up the FmodErr procedure the idea is to compute the MC z step looking at the calibrated signal and then null it in one step (the fine tuning will be done tuning the modulation frequencies). In order to understand if the calibration has to be continuously measured or a fixed value is enough the calibration factor has been measured over months (using the MC z displacement in the FmodErr procedure). The calibration is quite stable but it is safer to remeasure it quickly during the procedure (making a small step in MC Z of 100 um).

Images attached to this report
43115_20181017095140_calibvar.png
Detector Operation (Operations Report)
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Nenci - 08:42, Wednesday 17 October 2018 (43114)Get code to link to this report
Comment to Operator report - Afternoon shift (Click here to view original report: 43107)

This night I received an alarm, LSC_Acl crashed again at 3:11 UTC, I restarted it properly at 3:14 UTC.

Detector Operation (Operations Report)
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mwas - 08:22, Wednesday 17 October 2018 (43113)Get code to link to this report
Comment to Operator report - Afternoon shift (Click here to view original report: 43107)
There is no light reaching the B1p/B1s1 photodiodes. Either the large valve between BS and SR is still closed or SDB2 is far from being well aligned (is the work on the suspension still ongoing).
In either case, the DET_MAIN slow shutter automation cannot decide what is the state of the slow shutter, as some power on B1p_PD2 is required for that test. So it correctly goes into the UNKNOWN state.
Images attached to this comment
43113_20181017082208_screenshotfrom20181017082129.png
AdV-AEI Squeezer Integration (Integration of squeezer control system and data in the Virgo framework)
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masserot,sorrentino - 07:00, Wednesday 17 October 2018 (43112)Get code to link to this report
AA control setup

As the B1p quadrants are now demodulated at 7MHz squeezer frequency,  a new server SQZ_SDB2 running on the rtpc5 has been setup to compute the X and Y position for the each quadrant.

These channels are then sent to the rtpc1 to be availlable for the SQZ_PLL_AA server where the control logic has been setup .

AdV-AEI Squeezer Integration (Integration of squeezer control system and data in the Virgo framework)
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masserot,sorrentino - 06:33, Wednesday 17 October 2018 (43111)Get code to link to this report
AA control setup

As the B1p quadrants are now demodulated at 7MHz squeezer frequency,  a new server SQZ_SDB2 running on the rtpc5 has been setup to compute the X and Y position for the each quadrant.

These channels are then sent to the rtpc1 to be availlable for the SQZ_PLL_AA server where the control logic has been setup .

AdV-DET (Commissioning)
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masserot - 06:21, Wednesday 17 October 2018 (43110)Get code to link to this report
Photodiode and Quadrant demodulation noise floor

The attached plots shows the demodulation noise floor  for the  SDB2 photodiode and quadrant sensors when the BS-SR valve is closed

Images attached to this report
43110_20181017062016_sdb2longitudinalphnoisefloor.png 43110_20181017062030_sdb2angularphnoisefloor.png
AdV-DAQ (Data collection)
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masserot,vahlbruch - 06:00, Wednesday 17 October 2018 (43108)Get code to link to this report
Tolm network upgrade - squezer DAQ boxes

The Daq boxes used by the sqeezeer subsystem are now directly connected to the  MuxDemux  SN13.

The first file contains  the detailled scheme for the SDB2 DAQ boxes and Tolm devices

The second file contains the detailled scheme for the others detection(SDB1,EDB)  and sqeezer DAQ boxes and Tolm devices

The last file contains the updated full Tolm network.

The configuration files of the squeezer servers have been updated accordingly and Henning checked that everything runs correctly for the squeezer control and monitoring

Non-image files attached to this report
Detector Operation (Operations Report)
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bersanetti - 23:55, Tuesday 16 October 2018 (43109)Get code to link to this report
Comment to Operator report - Afternoon shift (Click here to view original report: 43107)

The automation issue could be due to the fact that DET_MAIN is asked to go to SHUTTER_CLOSED in order to have ITF_LOCK reach LOCKED_RECOMBINED; looking at the log it seems that this failed with the following error:

2018-10-16-18h27m51-UTC>WARNING-[SHUTTER_CHECK_OPEN.run] USERMSG 0: No power on B1s1/Bs2 PDs, shutter probably not open

My naive guess is that something has changed after the B1s1/B5 swap.

 

About the crash of LSC_Acl, this is most probably the same problem already occurred in the past when, because of some weird interaction between Acl / cm / PythonVirgoTools, an Acl process crashes when something tries to access a recently modified ACL_SUM_CH or ACL_MATRIX_CH object, whose number of inputs has changed; in this case I think this was triggered by the removal on the B1p_119MHz signals from the LSC sensing matrices. I am not sure though how to cure the problem, as reloading a Metatron node is not always sufficient (but sometimes it is), as the AclServer objects in PythonVirgoTools do not completely replace themselves upon RELOAD. We could think about some "flush" directive which deletes the Python objects from the userspace before reloading a new instance...

Detector Operation (Operations Report)
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berni - 23:04, Tuesday 16 October 2018 (43107)Get code to link to this report
Operator report - Afternoon shift
The shift was dedicated to the activity on SDB2 bench, still in progress ...

In parallel Eric and others completed the swap of the master laser.

In the late afternoon we relocked in LOCKED_RECOMBINED but after an unlock (17:40 UTC) the automation was stuck/crazy and the problem was not so evident.
At the beginning I thought a problem related with LNFS because the IMC had some troubles to relock and INJ_MAIN was not able to perform fmod_err. Moreover the last message on the log was about LNFS.
I contacted Eric, I went on the "Piscina" and we verified that the LNFS generator was working properly.

At the end I discovered that the problem was caused by DET_MAIN that it was in "unknown" state; to restore the problem I put the node in INIT.

We relocked again in LOCKED_RECOMBINED but I collected again the same problem; I went in touch with Julia and we decided to leave the ITF in LOCKED_ARMS.


INF
stop and restart of the eurothermServer at 14:00 UTC to restore the connection with WE module.

ISC
At ~20:24 UTC LSC_Acl crashed; it was restarted at the first attempt. Alain is investigating on it.

PENDING
- "UTA DET" still in "Portata Nominale"
- the large valve between BS and SR still closed
- ITF_LOCK still modified at the following row: 828->829, 1244->1245, 1650->1651.
Comments related to this report
bersanetti - 23:55, Tuesday 16 October 2018 (43109)

The automation issue could be due to the fact that DET_MAIN is asked to go to SHUTTER_CLOSED in order to have ITF_LOCK reach LOCKED_RECOMBINED; looking at the log it seems that this failed with the following error:

2018-10-16-18h27m51-UTC>WARNING-[SHUTTER_CHECK_OPEN.run] USERMSG 0: No power on B1s1/Bs2 PDs, shutter probably not open

My naive guess is that something has changed after the B1s1/B5 swap.

 

About the crash of LSC_Acl, this is most probably the same problem already occurred in the past when, because of some weird interaction between Acl / cm / PythonVirgoTools, an Acl process crashes when something tries to access a recently modified ACL_SUM_CH or ACL_MATRIX_CH object, whose number of inputs has changed; in this case I think this was triggered by the removal on the B1p_119MHz signals from the LSC sensing matrices. I am not sure though how to cure the problem, as reloading a Metatron node is not always sufficient (but sometimes it is), as the AclServer objects in PythonVirgoTools do not completely replace themselves upon RELOAD. We could think about some "flush" directive which deletes the Python objects from the userspace before reloading a new instance...

mwas - 08:22, Wednesday 17 October 2018 (43113)
There is no light reaching the B1p/B1s1 photodiodes. Either the large valve between BS and SR is still closed or SDB2 is far from being well aligned (is the work on the suspension still ongoing).
In either case, the DET_MAIN slow shutter automation cannot decide what is the state of the slow shutter, as some power on B1p_PD2 is required for that test. So it correctly goes into the UNKNOWN state.
Images attached to this comment
43113_20181017082208_screenshotfrom20181017082129.png
Nenci - 08:42, Wednesday 17 October 2018 (43114)

This night I received an alarm, LSC_Acl crashed again at 3:11 UTC, I restarted it properly at 3:14 UTC.

AdV-DET (Commissioning)
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masserot,was - 20:57, Tuesday 16 October 2018 (43106)Get code to link to this report
SDB2 readout

This morming, the followings actions were perfomed on the SDB2 readout:

  • the unused demodulations were removed for
    • B1s1 6MHz, 12MHz and 56MHz
    • B1s1P 6MHz
    • B1s2P 6MHz
    • B1p 119MHz
    • B5 119MHz
    • the SDB2_DBOX_bench, SDB2_Photodiodes and the LSC_Acl configurations were upgraded accordly
  • the B1s2 demodulations were actived at the level of SDB2_photodiodes,
  • the demodulations of the B1_PD1 and B1_PD2 photodiodes were configured and activated at 6MHz, 8MHz and 56MHz . For each beam and photodiode, the I,Q, magnetude and the phase channels are computed
  • The B1p quadrant photodiodes are now demodulated at the 7MHz squeezer  frequency. To allow this, the decimation before the DSP filtering is now done at 500kHz instead of 1MHz previoulsly
  • All the {beam}_sample channels are now available for each demodulated channels: longitudinal and angular  photododiodes
AdV-DET (Commissioning)
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bonnand, mours - 19:12, Tuesday 16 October 2018 (43105)Get code to link to this report
B1s1 and B5_PD1 photodidoe swap

To provide more dynamic to the B1s1 photodiode, the B1s1 and B5_PD1 photodiodes have been swap this morning. We have now on B1s1 the air box SN26 with a 100 mW preamplifier and on B5_PD1 the air box SN 02 with a 50 mW preamplifier.

Injection system (General activities)
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casanueva, genin, gosselin, pillant - 19:10, Tuesday 16 October 2018 (43104)Get code to link to this report
Comment to Master laser swap (Click here to view original report: 43103)

The AA sensing matrix has been remeasured and the loop in full bandwidth has been restored.

ACL_MATRIX_BEGIN    sensing_matrix    1    MCT_hNORM    FF_ACh    NF_ACh        MCT_vNORM    FF_ACv    NF_ACv
ACL_MATRIX_CH            MC_ty_err    ""        12.37         0.00     -2.28        0            0        0
ACL_MATRIX_CH            IB_ty_err    ""        19.67         0.00     -42.09        0            0        0
ACL_MATRIX_CH            MC_tx_err   ""        0             0         0            7.43        19.22    0.0
ACL_MATRIX_CH            IB_tx_err    ""        0             0         0            26.70           12.19    0.0
ACL_MATRIX_CH            IB_tz_err    ""        0             0         0            2.26        22.12    84.52
ACL_MATRIX_END        sensing_matrix

 

ACL_CONST_CH MC_ty_set    ""    0    LOOP_FREQ    1.4
ACL_CONST_CH IB_ty_set    ""    0    LOOP_FREQ    -2.1 #
ACL_CONST_CH MC_tx_set    ""    0    LOOP_FREQ    -1.5 #
ACL_CONST_CH IB_tx_set    ""    0    LOOP_FREQ    -0.2 #
ACL_CONST_CH IB_tz_set    ""    0    LOOP_FREQ    -14.5 #

Injection system (General activities)
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pillant, genin, gosselin, casanueva - 18:26, Tuesday 16 October 2018 (43103)Get code to link to this report
Master laser swap

This morning was swap the master laser.

The ML power at the input of the Slave laser is now 510 mW instead of 390mW previusly.

Was also reduced the BPC corrections but due to the cumulated drift last months the beam was clipped on

the last mirrors (EIB_M6 and EIB_M7). The beam was manually recentered on the optics of the EIB.

The AA matrix measurement is ongoing.

Comments related to this report
casanueva, genin, gosselin, pillant - 19:10, Tuesday 16 October 2018 (43104)

The AA sensing matrix has been remeasured and the loop in full bandwidth has been restored.

ACL_MATRIX_BEGIN    sensing_matrix    1    MCT_hNORM    FF_ACh    NF_ACh        MCT_vNORM    FF_ACv    NF_ACv
ACL_MATRIX_CH            MC_ty_err    ""        12.37         0.00     -2.28        0            0        0
ACL_MATRIX_CH            IB_ty_err    ""        19.67         0.00     -42.09        0            0        0
ACL_MATRIX_CH            MC_tx_err   ""        0             0         0            7.43        19.22    0.0
ACL_MATRIX_CH            IB_tx_err    ""        0             0         0            26.70           12.19    0.0
ACL_MATRIX_CH            IB_tz_err    ""        0             0         0            2.26        22.12    84.52
ACL_MATRIX_END        sensing_matrix

 

ACL_CONST_CH MC_ty_set    ""    0    LOOP_FREQ    1.4
ACL_CONST_CH IB_ty_set    ""    0    LOOP_FREQ    -2.1 #
ACL_CONST_CH MC_tx_set    ""    0    LOOP_FREQ    -1.5 #
ACL_CONST_CH IB_tx_set    ""    0    LOOP_FREQ    -0.2 #
ACL_CONST_CH IB_tz_set    ""    0    LOOP_FREQ    -14.5 #

Detector Operation (Operations Report)
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Sposito - 16:00, Tuesday 16 October 2018 (43101)Get code to link to this report
Operator Report - Morning shift 16/10

ITF found in LOCKED_RECOMBINED. The shift was dedicated to the work on SDB2 bench.

At 6:00 UTC started the planned maintenance, below the list of the activities communicated to the control room:

  •     7.14 UTC M. D'Andrea switched off the IPS at WE. 8.07UTC IPS switched on again
  •     vacuum activities (nitrogen refill)
  •     grass cutting at WEB and NEB areas
  •     N. Menzione, M. Ciardelli, and the cleaning company performed cleaning operation at NEB and WEB (clean areas)
  •     G.Pillant and E. Genin replaced the master laser
  •     D. Soldani performed a general check on compressed air and boilers in all the Virgo site
  •     Flooring work in the entrance near cabling lab 
  •     R. Cavalieri, F. Nenci, and B. Montanari replaced the broken cable of the IPS current sensors at MCB

TCS

Standard checks and refill of TCS chillers.

DMS

As requested by R. Cavalieri i have unshelved this two flag rms_ENV_MCB_UPS_CURR_T_2 and rms_ENV_MCB_IPS_CURR_S_2.


Pending

"UTA DET" still in "Portata Nominale"

the large valve between BS and SR still closed

Environmental Monitoring (Environmental Monitoring)
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fiori, paoletti. - 15:50, Tuesday 16 October 2018 (43097)Get code to link to this report
Comment to Temperature sensors in DET lab (Click here to view original report: 43018)

This morning we investigated the issue. We found that the two channels were swapped at the level of the Napoli box ENV-DT located in DAQ room, so we swapped them back.

Presently:

  • ENV_DLAB_TE associates to the temperature probe is located on the cable tray above EDB bench, and next to the one used by the air conditioner controller (named HVAC_DLAB_TE); see picture
  • ENV_SDB2_TE associates to the temperature probe located in proximity of  SDB2 vacuum tank (but not in real termal contact, and in a very precarious placing, that has to be improved): see picture
Images attached to this comment
43097_20181016153421_20181016101452.jpg 43097_20181016153425_20181016101322.jpg
AdV-DAQ (Data collection)
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swinkels - 15:45, Tuesday 16 October 2018 (43099)Get code to link to this report
Comment to Data flux (Click here to view original report: 34317)

I rerun my old script for Sunday night, see the output below. Note that the numbers are for the uncompressed data flux. The corresponding gwf file is 4.52 GB for 100 seconds, which suggest that the compression saves about 56% for a total flux of 46.3 MB/s written to disk. Note that the list only includes ADCdata channels, so it is missing for example the fast Hrec channels, which are stored as 'procdata'. Finally note that due to 'striped' storing of some fast *_sample channels, one out of 10 frames is 6.14 GB on disk, which overall costs an extra 3.6%.

Statistics for frame file /virgoData/ffl/raw.ffl at gps = 1223596100 (2018-10-14 23:48:02 UTC) (adc channels only, proc and sim are missing)
       Sc: 20680000 byte/s,  517 channels (Sc_BS_F7_COIL_H1, Sc_BS_F7_COIL_H2, ...)
     SDB2: 10986371 byte/s, 1127 channels (SDB2_Photodiodes_lTmo, SDB2_Photodiodes_runTime, ...)
      LSC:  9204888 byte/s,  660 channels (LSC_UGF_COH_THRESH, LSC_UGF_PRCL_SET, ...)
     SSFS:  7680240 byte/s,  105 channels (SSFS_noise_lTmo, SSFS_noise_runTime, ...)
      ENV:  6958290 byte/s,  560 channels (ENV_WE_DUST_5UM, ENV_WE_DUST_2UM, ...)
     SDB1:  6235819 byte/s,  293 channels (SDB1_Rot_Channel2_Axis1_Position, SDB1_Rot_Channel1_Axis2_Position, ...)
      INJ:  5803660 byte/s,  280 channels (INJ_LNFS_INJLnfs100LNFS_State, INJ_LNFS_PLL, ...)
     SPRB:  5125574 byte/s,  503 channels (SPRB_Photodiodes_lTmo, SPRB_Photodiodes_runTime, ...)
     SIB2:  4871554 byte/s,  677 channels (SIB2_RFC_PD2_DC_adcBias, SIB2_RFC_PD2_DC_adcSlope, ...)
      DAQ:  4281952 byte/s,  213 channels (DAQ_PYSFP_MEM, DAQ_PYSFP_ETIME, ...)
     SNEB:  3368725 byte/s,  498 channels (SNEB_Photodiodes_lTmo, SNEB_Photodiodes_runTime, ...)
      SBE:  3274360 byte/s,  398 channels (SBE_SNEB_ACT_F0H0_raw_500Hz, SBE_SNEB_ACT_F0H1_raw_500Hz, ...)
     SWEB:  3208666 byte/s,  476 channels (SWEB_Photodiodes_lTmo, SWEB_Photodiodes_runTime, ...)
      SQZ:  2682058 byte/s,  160 channels (SQZ_PLL_Ext_plt_min, SQZ_PLL_Ext_pid_der, ...)
     PCAL:  2644864 byte/s,   69 channels (PCAL_NEB_PD1, PCAL_NEB_PD1_Vbias, ...)
      PSL:  2096440 byte/s,   79 channels (PSL_SL_INJSL_TempControllerEER_State, PSL_SL_XTAL2_TE_SET, ...)
      EDB:  1626145 byte/s,  112 channels (EDB_DBOX_DetEEroom_mezz1_temp1, EDB_DBOX_DetEEroom_mezz1_temp0, ...)
      ASC:  1433152 byte/s,  463 channels (ASC_Acl_lTmo, ASC_Acl_runTime, ...)
      BsX:  1400000 byte/s,   35 channels (BsX_AAsw, BsX_Driftsw, ...)
    PSTAB:   960000 byte/s,   12 channels (PSTAB_AMP_CORR, PSTAB_HF_CORR, ...)
       Sa:   902000 byte/s,  451 channels (Sa_NE_BR_LVDT1_500Hz, Sa_NE_BR_LVDT2_500Hz, ...)
      TCS:   840576 byte/s,  165 channels (TCS_WI_LASER, TCS_WI_CYN, ...)
      CAL:   600392 byte/s,  113 channels (CAL_BS_MAR_Z_CORR, CAL_BS_MIR_Z_CORR, ...)
     ISYS:   520800 byte/s,   15 channels (ISYS_Acl_CfgChange, ISYS_Acl_Time, ...)
     SUSP:   361200 byte/s,   12 channels (SUSP_NTP_delta_gps, SUSP_SBE_LC_CfgChange, ...)
     EPRB:   185712 byte/s,   50 channels (EPRB_B4_PC_72MHz_REF_PWR, EPRB_B4_PC_88MHz_REF_PWR, ...)
     LNFS:   161200 byte/s,    7 channels (LNFS_Demod_CfgChange, LNFS_Demod_Time, ...)
     NCAL:   160000 byte/s,    2 channels (NCAL_NE_motor_raw, NCAL_NE_rotor_raw, ...)
      NEB:   120236 byte/s,   65 channels (NEB_DBOX_TCS_PCAL_Monitoring_Tolm_Send_RxTxErrorFlag, NEB_DBOX_TCS_PCAL_Monitoring_Tolm_Send_Total_Max_Index, ...)
      WEB:   120236 byte/s,   65 channels (WEB_DBOX_TCS_PCAL_Monitoring_Tolm_Send_RxTxErrorFlag, WEB_DBOX_TCS_PCAL_Monitoring_Tolm_Send_Total_Max_Index, ...)
   TIMING:   120048 byte/s,   21 channels (TIMING_DBOX_Main_lmk4800_status, TIMING_DBOX_Main_pressure, ...)
 CALnoise:   120016 byte/s,    7 channels (CALnoise_lTmo, CALnoise_runTime, ...)
      EOM:   120000 byte/s,    3 channels (EOM_Demod_CfgChange, EOM_Demod_Time, ...)
      EIB:   120000 byte/s,    3 channels (EIB_PC_CfgChange, EIB_PC_Time, ...)
 ENVnoise:   120000 byte/s,    3 channels (ENVnoise_CfgChange, ENVnoise_Time, ...)
ISYSnoise:   120000 byte/s,    3 channels (ISYSnoise_CfgChange, ISYSnoise_Time, ...)
 EnvDemod:   120000 byte/s,    3 channels (EnvDemod_CfgChange, EnvDemod_Time, ...)
      SDB:    80031 byte/s,   24 channels (SDB_DBOX_LC_lmk4800_status, SDB_DBOX_LC_ps_temp, ...)
      ISC:    80000 byte/s,    2 channels (ISC_Tpro_elapsed_time, ISC_Tpro_processed_packets, ...)
      Daq:    51526 byte/s,13094 channels (Daq_stol03_dt, Daq_stol03_em2_tx_colls, ...)
       Ti:    48000 byte/s,    6 channels (Ti_IRIGB_CEB_err_1KHz, Ti_IRIGB_GPS0_err_1KHz, ...)
    Pstab:    44000 byte/s,    2 channels (Pstab_Pressure, Pstab_TE, ...)
      VAC:    28430 byte/s,10190 channels (VAC_VALVECENTRAL_GOLDENST, VAC_VALVECENTRAL_RackStatus, ...)
      PAY:    11434 byte/s,  288 channels (PAY_10kHz1_AMPL, PAY_10kHz1_FREQ, ...)
       Qc:     9817 byte/s, 2456 channels (Qc_Vacuum_MC_Turbo_00, Qc_Vacuum_MC_BackPressure_00, ...)
       DQ:     8416 byte/s, 1712 channels (DQ_SATURATION_FLAG_OR, DQ_SATURATION_FLAG_SDB2_B1s2_PD1, ...)
       Bs:     4000 byte/s,    1 channels (Bs_SL_D2R_DC_bug, ...)
      SAT:     2044 byte/s,  511 channels (SAT_NE_rampTime, SAT_IB_rampTime, ...)
      INF:     1712 byte/s,  428 channels (INF_TB_UPS3_ALRM_TIME, INF_TB_UPS3_COM_ST, ...)
     HVAC:      960 byte/s,  240 channels (HVAC_loop_DET_ENBL, HVAC_loop_DET_error_max, ...)
       SA:      664 byte/s,  166 channels (SA_NE_SB_REL24, SA_NE_SB_REL23, ...)
      EER:      608 byte/s,  186 channels (EER_ADC_Moni1_Monitoring_Tolm_Send_RxTxErrorFlag, EER_ADC_Moni1_Monitoring_Tolm_Send_Total_Max_Index, ...)
      CEB:      353 byte/s,  118 channels (CEB_DBOX_PLATFORM_mezz0_temp1, CEB_DBOX_PLATFORM_mezz0_temp0, ...)
      DET:      144 byte/s,   36 channels (DET_ADC_Moni1_Monitoring_Tolm_Send_RxTxErrorFlag, DET_ADC_Moni1_Monitoring_Tolm_Send_Total_Max_Index, ...)
      MCB:      144 byte/s,   36 channels (MCB_ADC_Moni_Monitoring_Tolm_Send_RxTxErrorFlag, MCB_ADC_Moni_Monitoring_Tolm_Send_Total_Max_Index, ...)
     Hrec:       86 byte/s,   86 channels (Hrec_Veto_dataQuality, Hrec_Veto_nVetosFailed, ...)
     META:       76 byte/s,   19 channels (META_WARM_LOCK_index, META_SUS_WI_index, ...)
     TCSR:       16 byte/s,    4 channels (TCSR_TE_NI_Chiller_Set, TCSR_TE_NI_Chiller, ...)
  OMICRON:        8 byte/s,    2 channels (OMICRON_RATE_LSC_DARM, OMICRON_RATE_ADC_LSC_DARM, ...)
       MB:        4 byte/s,    1 channels (MB_Lab1500NVac_State, ...)
Total:    109707651 byte/s, 37833 channels

AdV-DET (Local controls for all benches)
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mwas, gouaty - 15:41, Tuesday 16 October 2018 (43098)Get code to link to this report
Check on SDB1 local controls driving noise
During the last intervention inside the SDB1 tower we took a few minutes of data (Sep 14, 07:44 UTC) with the output of the local control driving electronics connected to the ADC.
Figure 1 shows that the noise level is 2e-7 V/rtHz, which is 1.5 factor lower than the DAC noise of 3e-7 V/rtHz. It is a bit surprising, but maybe half of the DAC voltage is actually used by the driving electronic box.
There is also 1/f extra noise, which probably comes from a large offset on the correction (~2V).
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43098_20181016153408_screenshotfrom20181016140503.png
Detector Characterisation (Broadband noise)
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ruggi - 15:15, Tuesday 16 October 2018 (43093)Get code to link to this report
Comment to Noise increasing during the first hour of lock (Click here to view original report: 43019)

The band rms of DARM at 122-136 Hz slightly increases at the beginning of one lock. This is not enough to claim anything. A more systematic analysis of calibrated data is needed.

Images attached to this comment
43093_20181016150536_darmrms.jpg