Camilla Nutsinee

We are leaving ADF line on for the night. If people don't like the line it can be turned off on the squeeze overview screen by toggling the ADF on/off button here. Changes related to this injection have been accepted in SDF.

E. Goetz, J. Kissel

As Evan and I were continuing to debug the PCAL calibration lines processed for the first time against DELTAL_EXTERNAL as a live measure of the calibration's systematic error, we were distracted by the noise in the magnitude and phase of the "final answer." As such, I've converted all DEMOD_I and DEMOD_Q banks, which filter out the 1w and 2w components of the demodulated PCAL, DARM_ERR, and DELTAL_EXTERNAL signals at each calibration line frequency to have a 0.1 Hz low pass in FM1 and a 0.025 Hz low pass in FM2. 

The first attachment shows the reduction in noise as a I switch from "all banks using 0.1 Hz LPs" (on the left of the plot) and eventually "all banks using 0.025 Hz LPs."

The second attachment shows that I've SDF accepted these values.
The third attachment shows an example on of these demods (in this case the "LINE5" PCAL line demod).

The Camera_servo guardian went to wait_for_cameras, but had an error because of a typo in self.failure vs. self.Failure (it cares about capitalization).  I capitalized the incorrect version, selected a different state, and reloaded.  Reminder that I had to jump to another state so that it would load and run through the main part of Wait_for_cameras to pick up that new variable name.  Seems fine now.

I added fudge factors to squeezer BLRMS NULL gain so the monitors read 0dB when we are not squeezing. All of the changes have been accepted in SDF.

I have accepted in the LSC Observe.snap the new PRCL FF that Gabriele tuned this morning (first screenshot).

I have unmonitored in the LSC Observe.snap the PRCL1 gain, since the THERMALIZE guardian needs to change it over the first several hours of the lock. Second screenshot)

I have unmonitored the ASC Observe.snap camera offsets, since guardian needs to set those to a different value each lock. Third screenshot.

E. Goetz, J. Kissel

We found that the EXT DEMOD PCAL LINE1 narrow bandpass filter was incorrectly set for an old frequency of 33.7 Hz, resulting in an output that was nonsense at the DEMOD frequency of 17.1 Hz. This was changed to a bandpass filter of width 0.1 Hz (design string: butter("BandPass",6,17.05,17.15)). The other DEMOD bandpass filters were centered correctly, but they had a wider width. We also changed it so that all of the bandpass filters use the narrower bandwidth using the same design string.

TITLE: 04/27 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Commissioning
SHIFT SUMMARY:
LOG:

Current IFO Status : NOMINAL_LOW_NOISE, it's been locked for35 minutes

Y End Wind fence Work, historicaly, has been particularly noisy for ground motio. So Jim asked me to put the "Bad_stuff" filter back on.
Bad Stuff filter : H1:ISI-ETMY_ST1_SENSCOR_Y_NORM_FILT4_SW1R and pause the Gaurdian: H1:GRD-ISI_ETMY_ST1_SC

BIG RED was moved with out incident and was finished at 15:18

LOCKLOSSES:
Lockloss From NLN_CAL_MEAS from a strange Earthquake type even that was local but didn't register on Seismic.
SEI_CONF went to Earthquake mode after we lost lock. -Ground motion
https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi?event=1366657197

Lockloss from FIND_IR  -unknown
https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi?event=1366660421

Lockloss from Find IR  -unknown
https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi?event=1366661697

Lockloss check_IR - see Tj's alog 69103
https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi?event=1366662777

Lockloss from ENGAGE_ASC -beam splitter alignment
https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi?event=1366663316

Lockloss ENGAGE_DRMI_ASC - poo beam splitter alignment again
https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi?event=1366663930

ICS_LOCK reloaded after Gabriele's changes.

TITLE: 04/27 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Commissioning
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 12mph Gusts, 9mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.09 μm/s 
QUICK SUMMARY:'

- IFO locked at NLN for 0:38 minutes and injections are currently ongoing

- All DMs/CDS/Alert handler ok

- LVEA is still LASER HAZARD

Elenna, Gabriele

We noticed coherence between DARM and INP1_P and INP1_Y. So we redesigned the loops to have a much larger roll-off at 10 Hz and above, for both P and Y

Filiberto and Jonathan

We setup a link to the h1pemmx ipmi port today.  Fil ran a fiber (fiber #5) from the patch panel in EX to the sw-ex-h1fe switch.  We linked that in to interface 1/3/3.  The other end was in mid-x, we added a media converter convert from fiber to ethernet.  We booted h1pemmx and reset its ipmi address.  Now both MX and MY computers are reachable by ipmi (provides remote power, console, ...).  Again we used a bi-directional optic so that we only needed one fiber strand.

Mid day Update!
Big Red was moved with out breaking lock!

IFO Status : Re-locking after a localized spike in ground motion caused a lockloss.

Issues relocking.... Lockloss at FIND_IR, Seesm like a very similar issue to last nights locking issues.
We are trying to resolve the issue, and relocking will commence.



 

Daniel, Naoki, Nutsinee

A following up of LHOalog68991 we injected frequency dependent squeezing with high CLF into DARM and looked at the coherence between our sqz laser intensity noise and DARM. In the end we increased CLF power by a factor of 8 and made DARM noise around 1.3kHz worse by 10.8%. Multiplying our previous CLF intensity noise projection of 3.7e-21m/sqrt(Hz) by sqrt(8) then add to our DARM noise floor at nominal CLF power of 2.95e-20 m/sqrt(Hz) in quadrature you get

sqrt((2.95e-20)^2+(10.46e-21)^2) = 3.13e-20 m/sqrt(Hz)

that is off from what we observed, 3.27e-20 m/sqrt(Hz), by 4.5%. It's not too crazy. Daniel's theory was intensity noise tumbles in phase but the ADF peak doesn't. If we tumble the phase of the ADF peak and project our noise floor from the mean value instead we might be closer. Something we intend to do during the next lock.

A coherence measurement between DARM and SQZ intensity noise demodulated at 3.125 MHz doesn't show much coherence but it's not nothing. The coherence is small but it does go up with CLF power. We are not sure what this means but the measurement could be an indication that our high CLF power could be intensity noise related.

To get a calibration factor for Anamaria in order to run coincident magnetic injections at both sites in the future, I drove the CS vertex coil with a gain of 600,000 between 18:28 and 18:33 UTC. Response in DARM and my injection settings are attached.

When the gain of the ISS second loop was changed, the input offset was not adjusted. This results in the output of the 2nd loop ISS to saturate after a lock loss, until the offset slowly gets compensated by the offset loop. But, this now typically takes like 5 minutes. I adjusted the offset (H1:PSL-ISS_THIRDLOOP_OUTPUT_OFFSET) from 587.3 to 1272. We will have to check after the next lock loss that this actually works.

WP 11121

End Station microphones at both End Stations have been upgraded.

1. Configuration of DC power supplies modified. New microphones only require 5V
2. Field power cables re-terminted changed from a 3 pin LEMO to CPC
3. BNC cables pulled/terminated from power conditioning box to microphones

Plan is to start upgrade of microphones in Corner Station next week.