Displaying reports 56621-56640 of 86301.Go to page Start 2828 2829 2830 2831 2832 2833 2834 2835 2836 End
Reports until 17:28, Thursday 13 October 2016
H1 CDS (DAQ)
david.barker@LIGO.ORG - posted 17:28, Thursday 13 October 2016 (30513)
CDS model and DAQ restart report, Wednesday 5th - Wednesday 12th October 2016

No unexpected restarts over these 7 days. h1fw0 gives occassional retransmission requests.

model restarts logged for Wed 12/Oct/2016 No restarts reported

model restarts logged for Tue 11/Oct/2016
2016_10_11 09:14 h1hpibs
2016_10_11 09:24 h1hpiitmx
2016_10_11 09:31 h1hpiitmy
2016_10_11 09:39 h1hpietmx
2016_10_11 09:41 h1hpietmy
2016_10_11 09:46 h1hpiham1
2016_10_11 09:52 h1hpiham2
2016_10_11 09:53 h1isiham2
2016_10_11 09:59 h1hpiham3
2016_10_11 09:59 h1isiham3
2016_10_11 10:04 h1hpiham4
2016_10_11 10:04 h1isiham4
2016_10_11 10:06 h1hpiham5
2016_10_11 10:08 h1isiham5
2016_10_11 10:11 h1hpiham6
2016_10_11 10:11 h1isiham6
2016_10_11 10:34 h1calcs
2016_10_11 10:37 h1susitmx
2016_10_11 10:39 h1fw2
2016_10_11 10:41 h1broadcast0
2016_10_11 10:41 h1dc0
2016_10_11 10:41 h1fw0
2016_10_11 10:41 h1fw1
2016_10_11 10:41 h1nds0
2016_10_11 10:41 h1nds1
2016_10_11 10:41 h1tw0
2016_10_11 10:41 h1tw1
2016_10_11 10:45 h1fw2
2016_10_11 10:55 h1fw0
2016_10_11 11:02 h1fw1
2016_10_11 11:36 h1tcscs
2016_10_11 11:41 h1psliss
2016_10_11 11:43 h1psldbb
2016_10_11 11:52 h1lsc
2016_10_11 12:01 h1lsc
2016_10_11 12:09 h1broadcast0
2016_10_11 12:09 h1dc0
2016_10_11 12:09 h1fw0
2016_10_11 12:09 h1fw1
2016_10_11 12:09 h1fw2
2016_10_11 12:09 h1nds0
2016_10_11 12:09 h1nds1
2016_10_11 12:09 h1tw0
2016_10_11 12:09 h1tw1
2016_10_11 12:24 h1lsc
2016_10_11 13:00 h1susetmx
2016_10_11 13:03 h1broadcast0
2016_10_11 13:03 h1dc0
2016_10_11 13:03 h1fw0
2016_10_11 13:03 h1fw1
2016_10_11 13:03 h1fw2
2016_10_11 13:03 h1nds0
2016_10_11 13:03 h1nds1
2016_10_11 13:03 h1tw0
2016_10_11 13:03 h1tw1
2016_10_11 16:15 h1sysecatc1plc1sdf
2016_10_11 16:17 h1sysecatc1plc3sdf

Maintenance day. New SEI models, new PSL ISS (bug fix) and DBB LSC (jitter feed-forward) models, new SUS ITMX,ETMX HWWD models. Updated beckhoff SDF, various DAQ restarts.

model restarts logged for Mon 10/Oct/2016 No restarts reported

model restarts logged for Sun 09/Oct/2016 No restarts reported

model restarts logged for Sat 08/Oct/2016 No restarts reported

model restarts logged for Fri 07/Oct/2016
2016_10_07 10:22 h1fw2

Testing latest daqd on fw2 (md5 sum filename change)

model restarts logged for Thu 06/Oct/2016
2016_10_06 14:52 h1psldbb
2016_10_06 14:53 h1broadcast0
2016_10_06 14:53 h1dc0
2016_10_06 14:53 h1fw0
2016_10_06 14:54 h1fw1
2016_10_06 14:54 h1fw2
2016_10_06 14:54 h1nds0
2016_10_06 14:54 h1nds1
2016_10_06 14:54 h1tw0
2016_10_06 14:54 h1tw1
2016_10_06 18:15 h1fw2

PSL-DBB model change with DAQ restart. Testing new daqd on fw2.

model restarts logged for Wed 05/Oct/2016
2016_10_05 15:58 h1asc
2016_10_05 16:01 h1dc0
2016_10_05 16:01 h1nds0
2016_10_05 16:02 h1fw1
2016_10_05 16:03 h1broadcast0
2016_10_05 16:03 h1fw0
2016_10_05 16:03 h1fw2
2016_10_05 16:03 h1tw1
2016_10_05 16:04 h1nds1
2016_10_05 16:05 h1nds1

new asc code with daq restart.

H1 General (OpsInfo)
cheryl.vorvick@LIGO.ORG - posted 16:00, Thursday 13 October 2016 (30509)
Ops Day Shift Summary:

State of H1: locked in Nominal Low Noise

Activities:

H1 locking:  all changes / issues resolved or being worked on

 

H1 ISC (ISC)
gabriele.vajente@LIGO.ORG - posted 14:47, Thursday 13 October 2016 - last comment - 16:48, Thursday 13 October 2016(30508)
Alignment vs jitter noise

In brief, no success. In details, here are some alignment tweaks trief over the last couple of days:

The decrease of range in the last lock was due to a misalignment of the SRM.

Comments related to this report
daniel.sigg@LIGO.ORG - 16:36, Thursday 13 October 2016 (30511)
Link

Can we roughly quantify this in m/rtHz/rad?

gabriele.vajente@LIGO.ORG - 16:48, Thursday 13 October 2016 (30512)
Link

Moving SRM by ~20 urad reduces the noise by a factor ~2

A bit more like a factor 3 of noise reduction when moving IMC_DOF_1_P with an offset of 400, don't know the calibration

H1 General (CDS)
cheryl.vorvick@LIGO.ORG - posted 13:32, Thursday 13 October 2016 (30507)
ops work station 12 rebooted - medms died
H1 CAL (DetChar)
jeffrey.kissel@LIGO.ORG - posted 13:01, Thursday 13 October 2016 (30499)
Restarted 1083.7 Hz Calibration Line on PCALY 
J. Kissel

Though we turned off the 1083.7 Hz calibration line last night (LHO aLOG 30476) because we were worried about range in the PCAL systems Optical Follower Servo (OFS) after increasing other calibration line amplitudes. However, as a quick test, I turned it back on. With the increased amplitude of other CAL lines, and this 1083.7 Hz line ON, the OFS does not saturate, so it appears we have enough range to run it all. I've also made a quick check of the calibration line harmonics to be sure those are not huge, and still well below the DARM sensitivity, and they are. Nice!

We want this line ON, so it serves as a clean reference for the optical gain while we perform the high frequency, long duration sweeps (i.e. LHO aLOG 30434).

I've accepted the change in the SDF system.
H1 General (GRD, ISC, OpsInfo)
cheryl.vorvick@LIGO.ORG - posted 13:01, Thursday 13 October 2016 - last comment - 14:02, Thursday 13 October 2016(30498)
made it to DC readout - now in NLN

issues getting here:

Comments related to this report
cheryl.vorvick@LIGO.ORG - 13:14, Thursday 13 October 2016 (30500)
Link

 REFL WFS centering not coming on in Inital alignment for PRC and SRC, so in both cases those didn't complete until engaged by hand (guardian?)

Images attached to this comment
cheryl.vorvick@LIGO.ORG - 13:12, Thursday 13 October 2016 (30501)
Link

POPA OFFSETS - Evan looks at these - not sure they're OK but in the end they seem to work

Images attached to this comment
cheryl.vorvick@LIGO.ORG - 14:02, Thursday 13 October 2016 (30503)
Link

    ASC - Evan toggled PRC1_P on and off (3 seconds each) to save the lock and also allow PRC1 P to converge

Images attached to this comment
cheryl.vorvick@LIGO.ORG - 13:17, Thursday 13 October 2016 (30504)
Link

    POPA sum got noisy in ENGAGE SOFT LOOPS until I engaged the CHARD offset of 0.1 by hand in Engage Soft Loops, then the signal improved

Images attached to this comment
cheryl.vorvick@LIGO.ORG - 13:22, Thursday 13 October 2016 (30505)
Link

    I set the ramp on CSOFT to 120 seconds, and at 120 seconds there's a kick that can be seen on CSOFT_P

  • in the picture the offset ramps starting at the skip in data between -3 and -2
  • between -1 and 0, 120 seconds later the ramp ends and there's a glitch
  • isn't this what's not supposed to happen, i.e. a ramp shouldn have a sharp ending?
Images attached to this comment
cheryl.vorvick@LIGO.ORG - 13:24, Thursday 13 October 2016 (30506)
Link

    PI mode 26 rang up and did a bouncing thing until I lowered the gain by half from -5000 to -2500, and then tuned the phase

Images attached to this comment
H1 PSL
peter.king@LIGO.ORG - posted 12:47, Thursday 13 October 2016 - last comment - 18:54, Thursday 13 October 2016(30497)
crystal chiller flow rate 
Using the crystal chiller that is currently sitting in the mechanical room, the on/off flow rate
was recorded as a function of time.  The data is that reported via the RS-232 interface.  When
switched off, the flow rate drops to zero in 3.245 seconds.  This seems a lot slower than the
drop reported by EPICS, which seems to suggest the flow rate drops to zero in less than a second.
Images attached to this report
Comments related to this report
john.worden@LIGO.ORG - 18:54, Thursday 13 October 2016 (30515)
Link

The difference in times might be a result of different flow impedance - ie -different plumbing and thermal loads connected to the two chillers.

H1 GRD (GRD)
cheryl.vorvick@LIGO.ORG - posted 11:54, Thursday 13 October 2016 (30496)
can't get there from here - PRMI locked to LOCK_DRMI_1F

I'd like to go from PRMI to Lock DRMI 1F.

Images attached to this report
H1 General (ISC, OpsInfo)
cheryl.vorvick@LIGO.ORG - posted 11:34, Thursday 13 October 2016 (30495)
locking issues - REFL centering not turning on when it needs to

Locking issues this morning.

Images attached show the filter banks that aren't being engaged, and where to find them on the ASC page (DC centering)

Images attached to this report
H1 ISC (ISC, PSL)
gabriele.vajente@LIGO.ORG - posted 10:46, Thursday 13 October 2016 (30492)
Jitter feed forward needed retuning

As expected, the jitter feed forward that was tuned yesterday evening was no more good. Using the same method described before, I retuned it and found comparable performances as yesterday.

Addition:

The second plot shows how the coherence between DARM and DBB Q1Y changed over time. Initially there was no feed forward, then it was switched on at about t=1 hour. At t=8 hours I retuned it as explained above. Beware that the coherence color scale tops at 0.6 and not at 1. It looks like the subtraction was getting worse, but not too bad after all.

Images attached to this report
H1 CAL (CAL)
darkhan.tuyenbayev@LIGO.ORG - posted 21:17, Tuesday 11 October 2016 - last comment - 12:13, Monday 24 October 2016(30435)
Calibration line status (additional PUM and UIM lines)

J. Kissel, D. Tuyenbayev,

We turned on two calibration lines using ETMY coil drivers on stages L1 and L2. The SNRs of these lines are roughtly 1/3 of the regular calibration lines (regular cal. lines have SNR of ~100 with 10s FFT).

                              _FREQ (Hz)  _CLKGAIN (ct)
H1:SUS-ETMY_L1_CAL_LINE          33.7             60.0     O2-scheme synched oscillator for kappa_U
H1:SUS-ETMY_L2_CAL_LINE          34.7             27.0     O2-scheme synched oscillator for kappa_P

These lines will be used to better quantify calibration of the PUM and UIM actuators.

A related report: LHO alog 29291.

Images attached to this report
Comments related to this report
darkhan.tuyenbayev@LIGO.ORG - 10:00, Thursday 13 October 2016 (30494)CAL
Link

κU, κP and κT using these additional lines at ~6am on Wed., Oct. 12 are:

κU = 0.9828 - 0.0637i

κP = 0.9499 - 0.0380i

κT = 0.9784 - 0.0440i

These are preliminary values calculated manually for transfer functions taken at a selected time (no trends or averaging except for 10avg. in DTT), and the DARM model for ER9 (H1params_2016-07-01.conf). We will use SLM tool data to look at the parameter trends.

darkhan.tuyenbayev@LIGO.ORG - 12:13, Monday 24 October 2016 (30795)CAL
Link

Greg M, Darkhan T,

We calculated kappa values using SLM data (10s FFTs) generated over 10 days between Oct 10 and Oct 21 with ER9 parameter file
'${CalSVN}/Runs/PreER9/H1/params/H1params_2016-07-01.conf'

The plots show raw (unaveraged) values. SNRs of the L1 and L2 lines (used for calculation of κU and κP respectively) were set to give approximately 1/3 SNR compared to the L3 line (with the ER9 noise floor).

The data was taken from an additional SLM tool instance which was setup by Greg to calculate 33.7 Hz, 34.7 Hz, 35.9 Hz and 36.7 Hz line FFTs.

Images attached to this comment
H1 IOO
daniel.sigg@LIGO.ORG - posted 11:11, Friday 07 October 2016 - last comment - 09:23, Thursday 13 October 2016(30305)
RAM measurements: Take 3

Evan, Daniel

17:12:30 UTC Oct 7 2016:

17:16:30 UTC Oct 7 2016:

17:18:30 UTC Oct 7 2016:

17:24:30 UTC Oct 7 2016:

17:32:00 UTC Oct 7 2016:

17:34:30 UTC Oct 7 2016:

18:06:30 UTC Oct 7 2016:

Comments related to this report
evan.hall@LIGO.ORG - 11:16, Friday 07 October 2016 (30308)
Link

Spectra attached.

Images attached to this comment
daniel.sigg@LIGO.ORG - 15:12, Friday 07 October 2016 (30313)
Link

Coherence (modulation on)

Non-image files attached to this comment
evan.hall@LIGO.ORG - 09:22, Monday 10 October 2016 (30369)
Link

Using 2600 V/W for the demod gain and transimpedance, and 29 mW of dc PD power, this implies the following AM depths:

  I Q
9 MHz 0.95×10−4 2.4×10−4
45 MHz 1.9×10−4 8.2×10−4

Using 0.22 rad and 0.28 rad for the 9 MHz and 45 MHz modulation depths, this implies the following AM/PM ratios:

  I Q
9 MHz 0.43×10−3 1.1×10−3
45 MHz 0.67×10−3 2.9×10−3
Non-image files attached to this comment
evan.hall@LIGO.ORG - 11:01, Wednesday 12 October 2016 (30450)
Link

The attachment contains a budget of the expected CARM residual. The in-loop error point is taken from the CM board control signal, as was done previously. Here I used 2600 V/W for the transimpedance and demod gain.

The other measured traces are taken from the REFL9I readback (not from the CM board), so in principle there could be some extra dark noise at the error point from the summing node board or CM board. However, based on the O1 level this is of the same order as the shot noise (so we are not missing a huge amount of extra noise in this estimate).

Non-image files attached to this comment
evan.hall@LIGO.ORG - 17:05, Wednesday 12 October 2016 (30469)
Link

Attaching earlier RAM plot, this time with informative labels

Images attached to this comment
evan.hall@LIGO.ORG - 09:23, Thursday 13 October 2016 (30493)
Link

Here is a time series of REFL LF during the modulation depth reductions that happen during lock acquistion.

During the 9 MHz depth reduction (from 0.22 rad to 0.11 rad), the dc power changes from 4.83(3) mW to 4.27(3) mW. That means that after the modulation depth reduction, 4.08(4) mW of the dc light is from the carrier and 0.19(2) mW of the dc light is from the 9 MHz sideband (this assumes the 45 MHz contribution is negligible).

Note that the dc level is still settling to its final value of ~3.7 mW, so it's possible that these power ratios are evolving during the lock.

Images attached to this comment
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