The DMT (GDS) code (including the gstlal calibration code) was updated this morning around 9:18 am PDT.

There were several restarts after that, but DMT hoft generation has running stably since 1126979632 == Sep 22 2015 10:53:35 PDT

(John Zweizig and Maddie Wade still need to double check that the correct code and command line options are being used, though John did do an initial check.)

15:00 Pepsi trucks on site

           Christina checking out bidgs

15:02 Jeff: Dust Monitor work

15:35 Fil, Andreas, and Leslie to CER, LVEA to take pictures of the racks.

15:41 Hugh left X end

           Patrick to MidY to look for spare Bekhoff

           Bubba out of LVEA

15:43   Jodi out of LVEA

15:46 Jeff added 150 mL to PSL chiller

15:49 Jason to Mid X to check on 3IFO Oplev spare

15:51 Praxxair on site - one to EX driving real slow.

           Bubba using forklift to move the barricades

16:03 Patrick back

           Richard just finished w/ the vault. Heading to Mid X.

           Fire department here to test fire hydrant.

           Spotted Praxxair at Mid Y. Apparenlt there are two Praxxair trucks.

16:09 Christina + Karen to EX and EY. Just to look. No cleaning.

16:13 Peter to change room to take pictures of the eyewares.

           Sheila and Keita checking on Fil at CER.

16:20 Jason out

16:24 Peter done in the change room.

16:27 Richard back

16:39 Mitchell + Hugh checking on 3IFO stuff at North bay

16:42 Karen + Christina leaving EY

         Fire department to EY

16:47 Mike + SPIE camera crew out of LVEA

16:50 Richard to EY and MY to pick up Beckhoff stuff

16:51 Bubba to fan room to work on Sf3

16:57 Mike + SPIE crew driving down X arm

17:11 Joe done checking extinguisher (EX, EY, LVEA)

17:14 Richard back

17:18 Mike back

17:19 Daniel pulls some quipment out of electronics room

17:25 Fil to EX

17:32 Daniel out

17:52 Hydrant shut off at corner station

17:53 Jeff B. to mezzanine area

17:54 Jim restart H1 nds0 and nds1

17:44:35-17:55:47 Lots of ETMY saturations

18:05 Kyle starting pumps at MY (leak detection)

18:11 Fil and Andreas at EY

18:12 Cheryl and Ed doing LVEA sweep

18:20 Dave restart broadcaster

18:24 Hugh to both end stations to photograph stuff

18:30 Jeff B. out. And ging to bring up roll up door 3 feet to move in boxes (not heavy).

18:35 Evan and Jenne to LVEA (ISC rack)

18:37 Hugh at EX. Ken drilling hole on the beam tube concrete

18:05:36-18:34:34 Hell of ETMY saturations

18:41 Jeff B. done. He also added water to TCS chiller =D

18:45 Evan and Jenne out

18:46 Fil to EY to pickup stuff.

19:01 Hugh at EX. Fil just left EX.

19:07 Fire guy done checking extinguisher.

WP #5495

The raw minute trend files created by the trend writers (h1tw0, h1tw1) have been moved to prepare for copying.  This required the restart of daqd on h1nds0, h1nds1 so the nds servers can find the old files.

This is a combination of routine maintenance and recovery from the loss of raw minute trend files on h1tw0 when the SSD RAID system failed.  The preserved raw minute trend files will now be copied to the SATABoy RAIDs for both h1nds0 and h1nds1.

J. Kissel

I've increased the actuation delay before the sum of the the RESIDUAL (sensing) and CTRL (actuation) paths in the CAL-CS reproduction of H1:CAL-CS_DARM_DELTAL_EXTERNAL from four 16 [kHz] clock cycles (244 [us]) to seven 16 [kHz] clock cycles (427 [us]). This is done by changing the H1:CAL-CS_DARM_CTRL_DELAY_CYCLES EPICs record. The change is motived in LHO aLOG 21746. Recall this only affects the reproduction of the DARM displacement signal H1:CAL-CS_DARM_DELTAL_EXTERNAL (and therefore its ASD projected on the wall). I attach screenshots of the before and after. Note that the ASDs were taken ~30 minutes apart, so I don't expect the detailed structure to be the same. However, the change in phase at the sensing / actuation cross over causes overall shap change in the bucket. Also note that the transfer function used to remove the systematics from the DELTAL EXTERNAL channel will now have to be updated (documented in LHO aLOG 20481), to avoid double counting the high frequency affects. In the attached ASD, those corrections have *not* been changed, so we are likely double counting the corrections. More on that after I reconcile what Kiwamu had done and what Peter suggests.

I've captured the updated setting in both the OBSERVE.snap and SAFE.snap SDF files, and committed each to the repository.

Dave Barker, TJ

The new version of ext_alert.py (the scripts that polls GraceDB and reports events) is now running here at LHO. It has been running at LLO while they tested it and we got the OK from Duncan Macleod today. This new version will alert for "E" type events and now "G" type as well. The new events can be seen on the CAL_INJ_CONTROL.adl medm screen.

As a test, psinject is running excitations to the h1calcs model.  Note that the actual injection is turned off using the hardware injection control MEDM screen.  The psinject process is under control of Monit on h1hwinj1.  This will be turned off at the conclusion of Tuesday maintenance.

The following servers have been patched and rebooted:
ldr.ligo-wa.caltech.edu
ldas-pcdev2.ligo-wa.caltech.edu

The following servers were patched but were not and will not be rebooted today:
detchar.ligo-wa.caltech.edu
all compute nodes (node[1-270], gpu-node[1-5])

We saw a large glitch in the RF AM monitors with high coherence with DARM at around 16:13 UTC on Sept 22nd, while the IFO was locked and maintence was happening.  There werw people in the LVEA (though not near the PSL) and people in the CER but they were near the SEI and SUS racks, not the ISC racks. The first attached plot shows this on a 5 hour time scale, the second plot has 5 days.  This can be compared to Evan's plots of the last 3 weeks (21766) 

The full report can be found on the detchar wiki, but here are the main highlights:

• Nice long locks. Duty cycle 72%. Majority (5/9) of lock losses seem to be due to earthquakes
• Main downtime during these 4 days has been due to Chile earthquake which took place just before the start of the shift (16th at ~23:30 UTC) and subsequent aftershocks.
• The 48/49 Hz glitches seem to be becoming more prominent; hveto picks out PEM-EX_ACC_BSC9_ETMX_Z_DQ, HPI-ETMX_BLND_L4C_RX_IN1_DQ, HPI-ETMX_BLND_L4C_Y_IN1_DQ channels as good witnesses
• The 60 Hz glitches are continuing; hveto picks SUS-ETMY_M0_DAMP_Y_IN1_DQ and SUS-ETMY_L2_WIT_L_DQ channels as good witnesses
• 300-400Hz glitchy region (periscope?) is much worse at the beginning/end of a lock stretch. Also noticing this region more around the times of earthquakes/seismic activity (which is not so surprising). ASC channels are good witnesses of this region.
• Looking more in to the RF45 AM stabilization issues and generating DQ flags for these times.

TITLE: Sept 22, Day Shift: starting 15:00UTC

STATE Of H1: Locked/Commissioning, Range is 50+MPC, trying to stay locked for filter tests

OUTGOING OPERATOR: Corey

QUICK SUMMARY: Maintenance started at 15:00UTC.  Many people/trucks on site and people in VEAs and in the LVEA.  Attempting to stay locked for ASC filter tests: Sheila.

- Jeff, forklift,  dust monitor, mechanical building and high bay

- Christina - out buildings, no real cleaning, but checking for problems

- Ken, hammering 250m from end stations

- Richard, vault

- Bubba, 3IFO checking storage, and placing cones to protect elec.

- Jodi, 3IFO checks

- Pepsi, two trucks, on site

- Hanford Fire, hydrant checks 

- Hugh, checking HEPI fluid levels, 

- Jim, troubleshooting hardware injections, may glitch...

- Joe, taking Fire Dept. guy through LVEA and both end stations

- Mike, film crew, LVEA

- Praxair is onsite, though came through the open gate, so I don't know where they are

- Sheila, loading filter, started 15:20UTC

- Sprague, spraying perimiter

TITLE:  9/22 OWL Shift:  7:00-15:00UTC (00:00-8:00PDT), all times posted in UTC

Just chatted with Brian and Jeremy at LLO about the start of their Maintenance time (which is usually 8amCT [13:00UTC]), and they said they are going to let L1 stay in Observation Mode beyond their usual Maintenance start time so we can have more double coincident time (they will let L1 drop out whenever activities/contractors bump it out of lock.)

(For the record, LHO's Maintenance Time starts at 8am PST [15:00UTC]).  

Chris B., Jeff K.

We performed a series of single-IFO hardware injections at H1 as a test. The intent mode button was off at the time.

All injections were the same waveform from aLog 21744.

tinj was not used to do the injections. The command line used to do the injections was:

awgstream H1:CAL-INJ_TRANSIENT_EXC 16384 H1-HWINJ_CBC-1126257410-12.txt 0.2 -d -d
awgstream H1:CAL-INJ_TRANSIENT_EXC 16384 H1-HWINJ_CBC-1126257410-12.txt 0.5 -d -d >> log.txt
awgstream H1:CAL-INJ_TRANSIENT_EXC 16384 H1-HWINJ_CBC-1126257410-12.txt 0.5 -d -d >> log.txt
awgstream H1:CAL-INJ_TRANSIENT_EXC 16384 H1-HWINJ_CBC-1126257410-12.txt 0.5 -d -d >> log.txt
awgstream H1:CAL-INJ_TRANSIENT_EXC 16384 H1-HWINJ_CBC-1126257410-12.txt 1.0 -d -d >> log.txt

I've attached the log (log.txt) which contains the standard output from running awgstream.

Taken from the awgstream log the corresponding times are approximates of the injection time:

1126916005.002499000
1126916394.002471000
1126916649.002147000
1126916962.002220000
1126917729.002499000

The expected SNR the waveform is ~18. The scale factors applied by awgstream should change the SNR by a factor of 0.2 and 0.5 when used.

I've attached timeseries of the INJ-CAL_HARDWARE and INJ-CAL_TRANSIENT. The injections did not reach the 200 counts limit of the INJ_HARDWARE filterbank that we saw in the past.

Watching the live noise curve in the control room we did not notice any strong indication of ETMY saturation which usually manifests itself as a rise in the bucket of the noise curve. But this needs followup.

I've attached omegascans of the injections.