Starting CP3 fill. LLCV enabled. LLCV set to manual control. LLCV set to 50% open. Fill completed in 21 seconds. LLCV set back to 18.0% open.
Starting CP4 fill. LLCV enabled. LLCV set to manual control. LLCV set to 70% open. Fill completed in 482 seconds. LLCV set back to 39.0% open.

I accidentally turned on a PI filter while answering some question about settings for Terra.  We were out of Observing for 7 seconds at 18:58 UTC.

Terra was asking about our spot positions for some PI work, which spurred me into crunching the a2l numbers into beam spots which hasn't been done since late January.

The attached plot shows that overall, our spots aren't moving too much, especially on the ITMs.  However, the ETMX yaw is moving quite a lot which is very disconcerting.  ETMY pitch is also moving more than I'd like.  I'm not really sure why the ETM spots are moving as much as they are, but I'll think on it.

Just another quick comparison.  The Spectra attached shows the same story as previous: when the wind is low, the seismometer mounted with the BRS is noisier than the floor located ISI GND STS below 80mHz.  When the wind kicks up, the sensors compare better down to 20mHz especially the X DOF in line with the prevailing winds.  We may try a few more tricks to improve the low frequency response such as insulating other components.

TITLE: 03/03 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
OUTGOING OPERATOR: Cheryl
CURRENT ENVIRONMENT:
    Wind: 14mph Gusts, 10mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.23 μm/s
QUICK SUMMARY:  Locked for 32+ hours currently.  No issues handed off from Cheryl.

TITLE: 03/03 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 65Mpc
INCOMING OPERATOR: Travis
SHIFT SUMMARY:

• ran a2l while LLO was down
• saw a car leaving the site, possibly the Sheriff
• 12+ hours locked
• Winds did pick up during the night, up to 35-40mph
• some low level earthquake activity, small changes in IMC signals
• ALS X fiber polarization is at 21, will need to be adjusted for relocking

TITLE: 03/03 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 66Mpc
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
    Wind: 16mph Gusts, 12mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.22 μm/s

QUICK SUMMARY:

• 8:28UTC - LLO is out of lock, ran a2l passive, yaw is 0.8
• 8:33:00UTC - out of Observe, running a2l script
• 8:41:34UTC - back in Observe

The lines are posted here in stochastic alog:

https://stochastic-alog.ligo.org/aLOG/index.php?callRep=339476

There seems to be a 8-Hz comb from 24 Hz to 72 Hz. I run the coherence tool for all of them as single lines and one comb. Similar to L1 results, there are mostly PEM channels. Sometimes a few CAL, SUS or ASC channels show up. There results for H1 are here:

24Hz: https://ldas-jobs.ligo-wa.caltech.edu/~duo.tao/O2_line_24/index.html

The 24 Hz line starts to be prevalent since week 3. It shows a lot in the EX, EY and CS magnetometers. 

32Hz: https://ldas-jobs.ligo-wa.caltech.edu/~duo.tao/O2_line_32/index.html

We do not have this 32 Hz line in week 1 and 9. It also shows a lot in the EX, EY and CS magnetometers. A significant number of SUS channels are also involved.

40Hz: https://ldas-jobs.ligo-wa.caltech.edu/~duo.tao/O2_line_40/index.html

We do not see the line in week 1,2,3 and 5. It shows mostly in EX, EY and CS magnetometers. There are channels from ASC and ISI in some weeks.

48Hz: https://ldas-jobs.ligo-wa.caltech.edu/~duo.tao/O2_line_48/index.html

EX, EY and CS magnetometers have the line. A significant number of channels from SUS show up in recent weeks. A different structure at 48 Hz is seen from three channels in the HPI subsystem of week 9.

56Hz: https://ldas-jobs.ligo-wa.caltech.edu/~duo.tao/O2_line_56/index.html

Still mostly channels of EX, EY and CS magnetometers are involved. A significant number of channels from SUS show up in recent weeks. A few channels from ASC are also involved.

64Hz: https://ldas-jobs.ligo-wa.caltech.edu/~duo.tao/O2_line_64/index.html

We do not have the line in week 1 and 2. Among the PEM channels, EX, EY and CS magnetometers are involved. It also has many channels in the SUS subsystem. Only two channels see this 64 Hz line in the most recent week of the coherence data (week 14). 

72Hz: https://ldas-jobs.ligo-wa.caltech.edu/~duo.tao/O2_line_72/index.html

We do not have the line in week 1, 2 and 9. In all weeks, there are channels of EX, EY and CS magnetometers. 

8Hz Comb: https://ldas-jobs.ligo-wa.caltech.edu/~duo.tao/O2_comb_8/index.html

It seems right that there is a 8 Hz comb in recent weeks. In previous weeks, the comb only shows one or two lines. I do not know if they are parts of the comb or just some other lines happened to be there. Many CS, EX and EY magnetometers have the comb. Some ASC and SUS channels also have the comb.

TITLE: 03/03 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 65Mpc
INCOMING OPERATOR: Cheryl
SHIFT SUMMARY: Locked the whole shift, 24 hours now. PSL temp dropped and came back again like it did for Travis.
LOG:

• 02:59 PSL temp drop.
• 04:23 GRB

Sheila Dwyer, Heather Fong

During the commissioning period on Wed March 1, we injected an AC 2-Hz signal into the ERM top mass longitudinal damping loop in order to test the scatter/fringing noise that was described in an earlier LLO test (see LHO alog 34224 and LLO alog 31104). The signal was injected into SUS_ETMY_R0_DAMP_L_IN and SYS_ETMX_R0_DAMP_L_IN. We observed noise in the DARM spectra, which appears consistent with scattering effects, and then we removed the noise by adjusting the PITCH and YAW of the ERMs. The attached plots show our results, where each plot corresponds to the different test masses. 

The settings, before and after testing, are the following:

ETMX:
     Before test: PIT = 0, YAW = 100
     After test: PIT = 440, YAW = 260
ETMY:
     Before test: PIT = 0, YAW = 2
     After test: PIT = -200, YAW = 10

After this test, we reverted to the previous settings of the ERMs such that it would not interfere with other commissioning tests, but we would like to save our settings in order to minimize the scattering effects.

TITLE: 03/03 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 65Mpc
OUTGOING OPERATOR: Travis
CURRENT ENVIRONMENT:
    Wind: 16mph Gusts, 13mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.21 μm/s
QUICK SUMMARY: Glad to hear that the noise source was found this morning. 16hr lock at 65Mpc

TITLE: 03/02 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 66Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY:  Locked in Observe for the entire shift other than the drop-out to run A2L.  Going on 16+ hours locked.
LOG:  See previous aLogs.

IMC beam spot measurements - comparing 24 Feb 2017 to 10 Nov 2016:

I incorrectly changed coil gains instead of pitch-2-length or yaw-2-length gains, and then made adjustments to my results.

MC1 and MC3 have two signal paths from excitation to coil output (that get summed before the coil input) are:

• EXC -> a2a_gain -> eul2osem_a_gain (summed with other path) -> coil_gain -> coil_output
• EXC -> a2l_gain -> eul2osem_l_gain (summed with other path) -> coil_gain -> coil_output

I created these signal paths and used them to calculated the p2l or y2l gain changes that produce the same coil output that I achieved by changing coil gains, and then used those p2l and y2l calculated values to get the beam spot position.

MC2 data was collected, results to be posted later.

Beverly, Josh

An unusual glitch was recorded at GPS time 1172368268 (approximately 2017-03-01 01:50:50). It was picked up by several microphones at the site and recognized as a likely to be due to an overflying plane by Evan Goetz. In fact, the glitch was recorded as a plane event by PlaneMon (https://marble.ligo-wa.caltech.edu/dmt/monitor_reports/PlaneMon_LHO/02_2017/1172368268/).

The attached figures show (1) the signal in the MIC at EX, (2) the signal in the MIC at EY, (3) the signal in the MIC at the LVEA (PEM-CS_MIC_LVEA_BS_DQ), (4) the appearance of the event in strain, (5) an overlay of the signals in the three MICs, and (5) the overlay of the MICS plus the  strain. Note that the strain appears to follow different MIC signals at different times.

[Vaishali Adya, Sheila Dwyer, Heather Fong]

Objective: To test if any additional lines show up in the DARM spectra barring the calibration lines and the power lines (this was done following the probable improvement in the DARM spectra at Livingston [30655]), and to try to find the source of these additional lines.

Method:

During the commissioning day on Tuesday earlier this week, we identified the different channels that were powered by the 18V or the 24 V power supplies. We unplugged the channels and then replugged them.

The channels that we looked at for EX and EY are listed below (these are power monitors which are on the power strips that power the electrostatic driver):

1. H1:PEM-EX_ADC_0_17_OUT_DQ (-24V)
2. H1:PEM-EX_ADC_0_18_OUT_DQ (+24V)
3. H1:PEM-EX_ADC_0_19_OUT_DQ (-17V)
4. H1:PEM-EX_ADC_0_08_OUT_DQ (+17V)
5. H1:PEM-EY_ADC_0_14_OUT_DQ (+24V)
6. H1:PEM-EY_ADC_0_15_OUT_DQ (-24V)
7. H1:PEM-EY_ADC_0_16_OUT_DQ (+17V)
8. H1:PEM-EY_ADC_0_17_OUT_DQ (-17V)

Preliminary results:

During our tests, we noticed peaks in the coherence and DARM plots at frequencies 275.5 Hz, 281.1 Hz, and 282.4 Hz; these peaks are seen in the plots for EX (please see attached). For EY, we saw peaks in DARM at frequencies 279.8, 141.4, 281.1, and 285.5 Hz. With the exception of 279.8 Hz, the peaks in EY were present in all channels; only EY channels 14 and 15 showed a peak at a frequency of 279.8 Hz. We also tried unplugging other electronics (PEM power distribution, PCAL camera, DCPD boxes, illuminator) which were plugged into the power strips, but we did not observe any changes in the power monitor. We would like to go back to the end stations and try unplugging the rest of the electronics to monitor changes in the power monitor.

Begin 1 hour standdown.

DQ shifter: Beverly Berger

email: beverly.berger@ligo.org

LHO fellow: Evan Goetz 

• Typically excellent duty cycle of 78%. Monday's lock had started on Sunday and ended on Tuesday (49h 42m). Most lock losses were intentional --- to perform an alignment (A2L) or commissioning, operator error, or wind gusts (see alogs 34455, 34480, 34481, 34483, 34503).
• Bounce and roll modes are still a problem early in locks and also tend to arise before lock losses.
• BNS range this week was about 5 Mpc lower than for my DQ shift last week (65 Mpc vs 70 Mpc). I could find no obvious cause for this range degradation.
• A peculiar glitch occurred at 01 Mar 01:50 (found in early rounds of hVeto). It was seen in a MIC channel (H1:PEMEX_MIC_EBAY_RACKS_DQ) and (via Evan) is due to an airplane. Details will be given in a separate alog.
• High wind generated ground motion and further reduced the BNS range on 1 Mar.
• HVeto reported glitches associated with several OPLEV channels on 27 Feb (following a similar behavior on 26 Feb). These channels are known to glitch. Is this a priority to fix? Reduced involvement in glitchng on 28 Feb and 1 Mar.
• On all three days, there was excess ground noise for an hour or so starting at 13:00. On 27-28 Feb, this was accompanied by a drop in BNS range and appearance of excess noise from about 50-100 Hz in h(t). On 1 Mar, the IFO was not locked during this period. This feature appears to be due to truck traffic on Route 10.

For complete details, see https://wiki.ligo.org/DetChar/DataQuality/DQShiftLHO20170227.

  At 14:19 (06:19) received alarm that PSL A/C was on or Low Temp in Laser Room. The PSL South temp is 69f, the PSL North temp is 70F. The PSL Table North is 73f. The PSL Table South is 71F. The Dust Monitor #101 under the table is reporting 69f. 

  At 14:06 (06:06 PT) Richard shut off the main fire pump (in the Carpenters Shop) which had been left on after Tuesday maintenance. The 40 to 200 Hz Breathing Noise appears to have settled down and the range has moved up to 64.2 Mpc.