The vibration isolation pads on the end station instrument air compressors had deteriorated to the point that the metal portion of the foot of the compressor was in contact with the concrete equipment pad. John and I  replaced the old pads on both compressors this morning.

Proposed & Ongoing Maintenance Day Activities

Y--Approved N--Not approved for this week  D--Approved but Delayed

D--Test SDF for Beckoff--JHanks--Delayed to 10-6

Y--Move PMC, LASER & Eq from OSB OL to LSB OL--PKing & JOberling--Completed

Y--Replace Vibration Isolators on End Instrument Air Compressors--BGately--Completed

Y--Restart SATAboy--CPerez--Completed

N--Add Botches to HL & HSTS ASC for Bounce/Roll--SDwyer

Y--ETM ChargeMeasurements--BWeaver--Completed

Y--"Fix" HAM5 Rogue Excitation Error--HRadkins--Completed

Y--Swap RF45 Controller--KKawabe--Completed

Y--Add low f Boost (ASC)----Completed

Y--Update GDS Pipeline for 15 usec delay fix--JKissel--Completed

Y--PRAXAIR Deliveries 1 Monday & 2 Tuesday--CP3(MidY)[Monday], CP6(MidX), CP1(CS)--Completed

Y--Shutdown Dust Monitors at End Stations--JBartlett--Completed

Y--PCAL as a Hardware Injector Proof-of-Principle--SKarki--Completed

Y--Forklift DCS Shipment from LSB to VPW--CCarrisco--Completed

Y--Restart NDS 0 & 1--JBatch--Completed

Y--Test Hardware Injection under MONIT--JBatch--Completed

Y--Update Code on DMT for latest Calibration--JZweizig--Completed

Y--Finalize Rack Photo Assay--FClara--Completed

Y--TMSX Raster For Clipping--SDwyer--Waiting on IFO

Summary:

The inverse actuation filter described in alog 21944 has been installed on F1 and F2 of H1:CAL-PCALX_SWEPT_SINE filter bank.

Details:

I installed the inverse actuation filter on Pcal X-end for testing purpose. The filters are installed on F1 and F2  of H1:CAL-PCALX_SWEPT_SINE filter bank. F2 contains a gain factor of average arm-length to convert strain to metres and F1 contains the transfer function that converts metres to counts of excitation at Pcal. The transfer function of the filter that is installed in foton is shown in attachment 1. These filters will remain off during normal IFO configuration and are monitored in the SDF.  I took some transfer function measurement between Excitation and TxPD, RxPD and OFSPD. The measurement files are committed to the SVN and can be found at:

/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O1/H1/Measurements/INVACT_PCAL/

To follow: Analysis of the above measurement and a waveform injection at the next opportunity as a test.

Vinny, Jordan

We put power supplies back in place that were removed here. The EY magnetometer in the SEI rack was disconnected now has an old style power supply and seems to be working ok. The EX magnetometer in the SUS rack was disconnected and is now connected with a new style power supply which has 1hz charging glitches.

Add 175ml water to PSL crystal chiller. 

When I CTRL-C'ed out of the ESD charge measurement scripts earlier today I reset all of the ESD settings back by hand.  I didn't reset the L3 BIO STATE though because I was unfamiliar with these specific settings in the charge scripts (I focused on fixing the L3 BIO screen ESD switches, etc).  SO, when the IFO rapidly achieved NOM LOW NOISE after the TUES Maint period, these switches were in the wrong state.  Doh!!  Shiela tried her magic at transferring the ESD control back to ETMX in order to switch the incorrect ETMY settings, but it broke lock anyways.  Praxair is still on site, so we're trying to get back up and into Observe as soon as he's off site.  Sorry, that LL was on me!

WP 5495

The daqd processes on h1nds0 and h1nds1 were restarted to force reconfiguration of where old minute trend files exist, since raw minute trend files were copied from SSD RAID to SATAboy RAID.  This is normal maintenance.

nm

I have restarted all the dmt processes. This is to fix problems seen at LHO in which disk write delays were interfering with the h(t) and DQ segment generation. The changes made were:

 1) remove diagnostic logging from the multicast receiver processes
 2) write the DQ xml files to a local disk and then move them to the gds RAID system as a separate process (not time critical).

A change of the h(t) calibration filter files was also planned, but this will be done after final calibration group tests.

Proposed & Ongoing Maintenance Day Activities

Y--Approved N--Not approved for this week  D--Approved but Delayed

D--Test SDF for Beckoff--JHanks--Delayed to 10-6

Y--Move PMC, LASER & Eq from OSB OL to LSB OL--PKing & JOberling--Completed

Y--Replace Vibration Isolators on End Instrument Air Compressors--BGately--Completed

Y--Restart SATAboy--CPerez--Completed

N--Add Botches to HL & HSTS ASC for Bounce/Roll--SDwyer

Y--ETM ChargeMeasurements--BWeaver--Completed

Y--"Fix" HAM5 Rogue Excitation Error--HRadkins--Completed

Y--Swap RF45 Controller--KKawabe--Completed

Y--Add low f Boost (ASC)----Completed

Y--Update GDS Pipeline for 15 usec delay fix--JKissel

Y--PRAXAIR Deliveries 1 Monday & 2 Tuesday--CP3(MidY)[Monday], CP6(MidX),...

Y--Shutdown Dust Monitors at End Stations--JBartlett--Completed

Y--PCAL as a Hardware Injector Proof-of-Principle--SKarki--Completed

Y--Forklift DCS Shipment from LSB to VPW--CCarrisco--Completed

Y--Restart NDS 0 & 1--JBatch--Completed

Y--Test Hardware Injection under MONIT--JBatch--OnGoing

Y--Update Code on DMT for latest Calibration--JZweizig--Completed

Y--Finalize Rack Photo Assay--FClara--Completed

Y--TMSX Raster For Clipping--SDwyer--OnWaiting onIFO

ShivarajK, JeffreyK, DarkhanT,

Overview

To reduce phase systematics in the DARM OLGTF model we've adjusted time delays/advances in the actuation and the sensing functions of the DARM loop Matlab model.

With the included 15 us of time-advance into the actuation function, the phase residuals of each of the actuation stage TFs up to 100 Hz measured on Aug. 26 - 29 are under 2 deg at high frequencies (except for L1 stage which is about 5 deg, which is ok because at high frequencies we rely mostly on L3 stage actuation), and the overall actuation function rediduals at high frequencies to mostly under 3 deg (Fig. 1).

To reduce sensing function phase residuals we have added 14 us of time-advance, which is similar to the correction introduced into LLO DARM model for O1 (see LLO alog 20894); with this additional time-advance the sensing function phase residual is mostly under 2 deg (Fig. 2).

DARM OLGTF model for O1 with included actuation and sensing function time delay/advance corrections have phase redisuals that are mostly under 2 deg (Fig. 4).

For GDS pipeline corrections: time delays in the updated H1 DARM model for O1 are:

• par.t.actuation = 114.6997 us
• par.t.sensing + par.t.armDelay = 75.6181 us

Details

In the DARMOLGTF model for O1 we had systematic phase residuals, which we planned to account for by adding time delay/advances into the actuation and the sensing functions (see LHO alog 21827). In the H1DARM model for O1 we implemented the time delay/advance correction capability via par.t.unknown_actuation and par.t.unknown_sensing parameters. After that we revisited actuation function stages' redisuals by looking at the plots produced using cmpActCoeffs_viaPcal_O1.m and analyze_pcal_20150928.m (this is a modified version of a script used at LLO, analyze_pcal_20150903.m, see LLO alog 20894), and confirmed that actuation stages with the included 15 us time advance correction show <2 deg residuals (under 5 deg for L1), Fig. 5, 6, 7; we still have ~ 2 % systematic residual in actuation magnitudes that we are leaving unchanged in the Matlab DARM model and the CAL-CS front-end filter modules (Fig. 8, 9, 10).

We modified "H1DARMparams_1125963332.m", "H1DARMparams_1127083151.m" and their kappa corrected versions and re-run CompareDARMOLGTFs_01.m.¹ Comparison plots show that:

• κ_tst and κ_C corrected actuation function model vs. measurements has residuals of mostly under 2% in magnitude and 3 deg in phase (Fig. 11);
• κ_tst and κ_C corrected sensing function has residuals of mostly ~2% systematic +/-2% in magnitude and under 2 deg in phase (Fig. 12);
• κ_tst and κ_C corrected DARM OLG TF model has residuals of mostly <2% in magnitude and +/-2 deg in phase (Fig. 13); in the frequency range [500 .. 700] Hz residuals are larger (could be due to low measurement coherence, Fig. 4).

¹we used kappa values at the measurement times from previous calculations (see LHO alog 21827); for the ~30 Hz lines these values shouldn't be too much different from the ones calculated using EP1-9 from the updated O1 model.

H1 DARM model for O1 and comparison script were committed to calibration SVN (r1550)

CalSVN/Runs/O1/H1/Scripts/DARMOLGTFs/H1DARMOLGTFmodel_O1.m

CalSVN/Runs/O1/H1/Scripts/DARMOLGTFs/CompareDARMOLGTFs_O1.m

All of the parameter files in the same directory were modified to include time advances noted in this report.

Actuation function analysis scripts were committed to (r1550) (PCAL parameter files, that were copied from ER8 directory have been also committed into the same directory):

CalSVN/Runs/O1/H1/Scripts/PCAL/analyze_pcal_20150928.m

CalSVN/Runs/O1/H1/Scripts/PCAL/cmpActCoeffs_viaPcal_O1.m

Actuation function analysis plots were committed to (r1551)

CalSVN/Runs/O1/H1/Results/PCAL/2015-09-28_cmpActCoeffs_PCAL_*.pdf

Model comparison plots were committed to

CalSVN/Runs/O1/H1/Results/DARMOLGTFs/2015-09-28_H1DARM_ER8O1_cmp_*.pdf

Summary:

We swapped the 45MHz EOM driver under the PSL table. This box contains the RFAM stabilization board.

Old one: S1500117

New one: S1500118

Related: https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=20392

We need some time to assess the impact of this swap.

Phasing:

In the PSL room, we roughly measured the phase of the driver output VS input by inserting a splitter to the input and measure the zero-cross time difference between the input and the output using a scope.

In the old one the output was 6.9ns ahead of the input, but in the new one it was 6.7ns, so there should be 0.2ns or about 3 degrees more delay.

Later we measured the transfer function from the H1:LSC-ASAIR_A_RF45_I_ERR to Q phase while the MICH was free swinging (PRM, SRM and ETMs are all misaligned). The phase between I and Q was basically 0 degrees as it should be.

We decided to go with 77.3deg, which is within 1 degree of the old phasing.

The h1hwinj1 computer is currently undergoing maintenance and testing.  A fresh checkout of the Details directory has been installed, with the old Details directory being moved to Details-old.  Testing of psinject and run_tinj will be performed to get these under monit control. 

Parameters for report:

GPS Start Time = 1127423695 # Beginning of time span, in GPS seconds, to search for injections
GPS End Time = 1127510095 # Ending of time span, in GPS seconds, to search for injections
Check Hanford IFO = True # Check for injections in the Hanford IFO frame files.
Check Livingston IFO = True # Check for injections in the Livingston IFO frame files.
IFO Coinc Time = 0.01 # Time window, in seconds, for coincidence between IFO injection events.
Check ODC_HOFT = True # Check ODC-MASTER_CHANNEL_OUT_DQ channel in HOFT frames.
Check ODC_RAW = True # Check ODC-MASTER_CHANNEL_OUT_DQ channel in RAW frames.
Check ODC_RDS = True # Check ODC-MASTER_CHANNEL_OUT_DQ channel in RDS frames.
Check GDS_HOFT = True # Check GDS-CALIB_STATE_VECTOR channel in HOFT frames.
Report Normal = True # Include normal (IFO-coincident, consistent, and scheduled for network injections and consistent and scheduled for IFO injections) injections in report
Report Anomalous = True # Include anomalous (non-IFO-coincident, inconsistent, or unscheduled) injections in report

----

No scheduled injections or non-occurring injections were found.

There was a CAL_INJ reset that occurred only in H1, CALRESET 1127480460.000 (H1). However, it has the anomaly that it appears in ODC HOFT and GDS HOFT frames but not in ODC RAW or ODC RDS frames.  This same anomaly was observed with several CBC injections in L1 during the daily period 1127163296 - 1127249696.

Now that the multi-processing version of HWInjReport is operational and returning results (multi-processing code is an absolute bear!), this is the first of daily reports of analysis of output from HWInjReport. Currently, HWInjReport still has to be run manually and requires one to checkout the current schedule file from the SVN (currently at https://svn.ligo.caltech.edu/svn/dac/hwinj/Details/tinj/schedule; if this has changed, please let me know so I can modify the run script appropriately). Automatic execution of HWInjReport is soon to come.  I've attached copies of the output report file and the schedule file used.  NOTE: the report file is very wide due to the number and size of the columns in the network injections tables of the report.  To examine the report, you will need to either zoom out or change the font size in your browser/text editor to 10pt or less (I'm looking into compressing the columns in the network injections tables in future updates).

The daily run performed with the following parameters:

GPS Start Time = 1127163296    # Beginning of time span, in GPS seconds, to search for injections
GPS End Time = 1127249696    # Ending of time span, in GPS seconds, to search for injections
Check Hanford IFO = True    # Check for injections in the Hanford IFO frame files.
Check Livingston IFO = True    # Check for injections in the Livingston IFO frame files.
IFO Coinc Time = 0.01    # Time window, in seconds, for coincidence between IFO injection events.
Check ODC_HOFT = True    # Check ODC-MASTER_CHANNEL_OUT_DQ channel in HOFT frames.
Check ODC_RAW = True    # Check ODC-MASTER_CHANNEL_OUT_DQ channel in RAW frames.
Check ODC_RDS = True    # Check ODC-MASTER_CHANNEL_OUT_DQ channel in RDS frames.
Check GDS_HOFT = True    # Check GDS-CALIB_STATE_VECTOR channel in HOFT frames.
Report Normal = True    # Include normal (coherent, consistent, and scheduled) injections in report
Report Anomalous = True    # Include anomalous (incoherent, inconsistent, or unscheduled) injections in report

NOTE: coherent -> coincident.  Missed changing that in the code where it outputs the report.

The schedule file only has injections spanning 1125280499 - 1126450499.  This is outside the range of times checked by HWInjReport, so there are no occurring or non-occurring scheduled injections reported.

No normal injections, as defined above for HWInjReport, were reported for the network injections.  All injections found were reported as UNSCHEDULED, and all injections occurring were reported as CBC injections.

Two H1-L1 coincident injections were found: CBC 1127175853.757(H1), 1127175853.764(L1) and CBC 1127179822.757(H1), 1127179822.764(L1).  Both injections were reported as UNSCHEDULED but, otherwise, had no other reported anomalies.

H1 had only 1 single-IFO injection, CBC 1127173426.757 (the report file shows 3, but only 1 is actually an H1-only injection.  There is apparently a bug due to the multi-processing code that is not propagating the association of the other 2 injections with their corresponding L1 injections. It's basically a problem of how memory works for a multi-processing environment.)

L1 had 5 single-IFO injections:

• CBC 1127162126.764
• CBC 1127162532.764
• CBC 1127162961.764
• CBC 1127181622.764
• CBC 1127183422.764

The first three injections have the anomaly that they occur in the ODC hoft and GDS hoft frames but not in the ODC raw or ODC rds frames. The remaining 2, other than being UNSCHEDULED, had no other anomalies reported.

ADDENDUM: I was able to successfully fix the data propagation bug.  I've attached a copy of the resulting "fixed" report that correctly shows the single-IFO injections for H1 and L1.

Summary:

In an effort to create a inverse actuation filter for Hardware injection through Pcal infrastructure, we use the transfer function between RxPD  and excitation of which RxPD is calibrated in terms of metres of displacement. . Using this RxPD calibration and the measured transfer fumction we calibrate the excitation [cts]  in terms of metres and use it to create the inverse actuation filter. This will be installed in one of the excitation channel, possibly swept sine channel, for testing purpose.

Detail:

In the above plot, the two left plots are the actual magnitude and phase of the measurement and different fits. The red plot is the inverse of measured transfer function between calibrated RxPD and pcal excitation. In short, it is cts of excitation to metres of test mass displacement. The rest of the plots are fit to that measured TF. In this case, the residual plots on the right side are more informative. The blue plot is the residual between measured TF and the fit that includes two zeros. The residual looks pretty good for this case but we do not have the luxury of only using two zeros. We need equal or greater number of poles to roll off the signal at higher frequency. For this we use a complex pole pair at 7 Khz and an additional real pole at same frequency. This creates some magnitude and significant phase distortion at higher frequencies as seen in the green residual plot but this is a systematic and we can account for this in our analysis later.

The magenta plot is the foton implementation of our two zeros and three pole fit plotted in green. There is a difference between the actual matlab generated filter and the foton version of it at frequencies above KHz. This is a known effect and is described in detail in G1501013.

I have written a litlle more detail technical note  and can be found at T1500496.