Helium sprayed YBM and Vertex

Gerardo, Kyle 

Following John and Bubba's final-torquing of the under-torqued viewport on HAM4 (S. door, bottom middle) and also HAM5 S. door bottom left -> Kyle and Gerardo sprayed audible bursts of helium (up to 3 feet away or closer) at viewports, feedthroughs and all accessible flanges -> Helium baseline drifted slowly up from 9x10-9 mbar*L/sec to 3x10-8 mbar*L/sec during the test period (lots of helium sprayed)

This was not an exhausted test, some flanges were not accessible (light pipes sealed off with aluminized tape etc)., in most cases, flange leak test ports were not pressurized - though big leaks should have responded.  

PSL restarted after power glitch

I restarted the PSL after the power glitch. 

To do this I also had to reset the settings on the KEPCO power supply, and I reset the long range actuator.

When everything locked, the ISS difracted power was around 21%, I tried toggling the noise eater (nothing else on the ODC indicated a problem with the noise eater).  This didn't help, and I ended up adjusting H1:PSL-ISS_REFSIGNAL  to bring the diffracted power down to 9%

Dust counts elevated due to wind storm

With wind gusts in the 70mph range, we are seeing spikes in the dust counts, most notable at EX with counts in the 100000s at 0.3um and 20000s at 0.5um.  Counts are also elevated in the LVEA around HAM3, HAM4, beer garden, and Y-arm spool but only into the 2000s at 0.3um and high 100s at 0.5um.

MSR UPS BATTERY REPLACEMENT

Replaced the batteries in the main cabinet of the  Mass Storage Room UPS.  Also replaced the backup control module.  This had gone bad a while ago so we were running without some redundancy.

Haboob At LIGO

This dust storm was fast.  Here are some photos of the approach.  Two power glitches preceded the storm (around 4:00pm).

OPS afternoon shift summary

EX: Switched filter box for ESD (Filiberto)

EX ISI TF running overnight (Jim)----> No banging on chamber!

Leak checking: y-beam manifold (Gerardo) & everywhere else (Kyle)

EY checking accelerometer locations for B&K tests (Arnaud/Tim)

EX calibration work (Paul, Jordan)

13:30 Greg turning on TCS CO2 laser in squeezer bay.

Justin refilled crystal chiller (Corey and Travis present as trainees)

PR3 oplev work beginning (Doug & Jason)

3IFO Quad work in the West Bay (Betsy)

13:54 Old conlog briefly being taken down (Cyrus)

14:23 Pablo to EY for ALS VCO characterization work

Dust monitor #15 (beer garden) alarm (13000 @ 0.3um but 0 @ 0.5um, check functionality??)

14:39 Tim and JeffK to EY to setup B&K measurements

15:03 Doug & Jason out of LVEA

16:00 Kyle opening GV2

16:25 Pablo done for the day

15:42 Paul & Jordan to EY installing voltage monitors

15:44 Hugh to EX restarting HEPI pump station

Giant Dust Storm causes Two Power Glitches

Two power glitches (~4:00pm local) from a giant Dust Storm that just hit us. Front ends died after the first glitch. Winds are gusting up to 70+ MPH. We're going to wait until the storm passes before beginning to restore everything.

Pictures are just before the storm hit.

REFL RF levels

Old alog 13299. Checked the two RF amp in ISC-R2 and found surprisingly high attenuators of 6dB and 4dB. Replaced the first with a 1dB and the second with a 2dB. 

New readbacks:

=== Rack ISC-R2 U38 ===
H1:ISC-RF_C_REFLAMP45M_OUTPUTMON = 22.6
=== Rack ISC-R2 U37 ===
H1:ISC-RF_C_REFLAMP9M1_OUTPUTMON = 22.4

The amplifier in the RF amp is nominally +12dB. 10dBm input will give close to 13dBm on each output at the tested 30 MHz. The slow readbacks should be around 22dB, typically no more than a 1dB off.

Readbacks for other 9 MHz and 45 MHz units in R2 went up accordingly. Some are now too high and need to be readjusted. WFS should be ok, since they use an RF splitter to distribute the LO to the 4 channels.

=== Rack ISC-R2 U18 (WFS REFL_A) ===
H1:ASC-REFL_A_RF9_DEMOD_LOMONCHANNEL_1 = 19.1
H1:ASC-REFL_A_RF9_DEMOD_LOMONCHANNEL_2 = 19.0
H1:ASC-REFL_A_RF9_DEMOD_LOMONCHANNEL_3 = 18.9
H1:ASC-REFL_A_RF9_DEMOD_LOMONCHANNEL_4 = 19.3
=== Rack ISC-R2 U16 (WFS REFL_A) ===
H1:ASC-REFL_A_RF45_DEMOD_LOMONCHANNEL_1 = 18.3
H1:ASC-REFL_A_RF45_DEMOD_LOMONCHANNEL_2 = 18.4
H1:ASC-REFL_A_RF45_DEMOD_LOMONCHANNEL_3 = -75.0432
H1:ASC-REFL_A_RF45_DEMOD_LOMONCHANNEL_4 = -74.9568
=== Rack ISC-R2 U10 (WFS REFL_B) ===
H1:ASC-REFL_B_RF9_DEMOD_LOMONCHANNEL_1 = 19.3
H1:ASC-REFL_B_RF9_DEMOD_LOMONCHANNEL_2 = 19.2
H1:ASC-REFL_B_RF9_DEMOD_LOMONCHANNEL_3 = 19.2
H1:ASC-REFL_B_RF9_DEMOD_LOMONCHANNEL_4 = 19.2
=== Rack ISC-R2 U08 (WFS REFL_B) ===
H1:ASC-REFL_B_RF45_DEMOD_LOMONCHANNEL_1 = 18.5
H1:ASC-REFL_B_RF45_DEMOD_LOMONCHANNEL_2 = 18.2
H1:ASC-REFL_B_RF45_DEMOD_LOMONCHANNEL_3 = 18.3
H1:ASC-REFL_B_RF45_DEMOD_LOMONCHANNEL_4 = 18.4

The 2 broken channels (together with the RF readbacks) are from Beckhoff chassis corner 4 terminal M4. All channels on this module read a value close to zero. Could be a cable problem between the demod chassis and the ASC demod concentrator.

h1-conlog-old Moving

I'm moving the old conlog machine to a new rack, so it (and by extension the historical data) will be unavailable for 15-20 min.  The new production conlog system will be unaffected.

h1conlog-old should be available again.  It took slightly longer as I needed to correct an IPMI configuration issue.

Frequency of "DAC's not driving, restart IOP" model problem

Jeff gave links in his alog for previous occurances of this error. This table summarizes the date for the front ends which exhibited this error over the past year:

8/11 2014	h1susb123
8/9 2014	h1seih23
4/21 2014	h1sush2a
3/18 2014	h1sush2a
2/27 2014	h1seih23
12/16 2013	h1seih23
11/7 2013	h1sush2a
11/7 2013	h2sush34
8/8 2013	h1seih23

9 events in one year. h1sush2a and h1seih23 show this error more than once (3 times and 4 times respectively)

all models compiled under rcg2.8.5, IPC file reverted

I have compiled all models using RCG2.8.5 in preparation for Thursday's upgrade. The procedure was:

• Save the H1.ipc file
• create a new H1.ipc file by running "make -i World" (skip errors, force IPC writers into ipc file)
• run "make World", failed at h1susauxb123 due to SPSZ part. Jeff and Arnaud instructed me to remove this part from the model, which I did and committd to svn
• run "make World" a second time, failed at h1susquadtst. This is an out of date top level model not synced with QUAD_MASTER. Took this out of rtsystab for now
• run "make World" a third time, all compiled.
• Saved the "2.8.5" version of H1.ipc and restored this file to this morning's version.

If anyone needs to compiled models today or tomorrow, please email me as I may  have to rebuild against the new IPC file tomorrow.

TF running on ETMX ISI, opsws8

Running full measurement, but should be done tomorrow morning.

Ops morning summary

08:00 LVEA is LASER HAZARD
08:00 Visitor - Tim McDonald arrived
08:50 "low/major" alarm in HO:FMC-EX_CY_H2O_SUO-DEGF- John Worden notified
09:01 M Landry - shuttering LASER temporarily for viewport inspection by vacuum team Vac team will be allowed to remove glasses for this operation. . Un-shutter immediately after. Remain LASER hazard
09:15 J Batch - bringing framewriter 1 down to move files. Should only take a few minutes.
09:30 J. Bergman - re-opening PSL shutter
09:30 Kiwamu and Sheila to PSL to instal some PD an AOM to take IMC cavity pole measurements for prep to run at higher power. - out at 12:21 THey will go back in some time this evening.
09:32 Nathan to optics lab
09:34 Jordan and Paul to End-Y to swap out AI chassis for PEM - out 10:17.
09:44 D Barker - "Code Freeze" UNTIL NOON
09:48 Doug and Jason into LVEA to wander and look for pieces parts for OpLev -out at 10:30
09:55 Kyle and Gerardo going to postpone crawling around on chambers in LVEA until after lunch.
10:05 Travis out to HAM 3 to check on Mobility experiment
10:20 Betsy out to hunt LVEA for ISC HAM6 parts
10:39 Praxxair out (didn't see them arrive)
10:40 Betsy working in West Bay on Quad
10:42 Kyle out to End-Y VEA to turn something off. -out at 11:00
12:30 Karen to End-Y
12:13 Pablo called to report he was at End-Y to do characterization on ALS and VCO.
12:34 Filiberto to End-Y to change the bias filter box for the ESD...... to be continued by Corey

building IPC file from scratch

As part of the upgrade to RCG2.8.5 I am taking the opportunity to rebuild the H1.ipc file from scratch because it contains a lot of orphaned channels and jumps in channel numbering.

I wrote a script to parse the H1.ipc INI file, compressing each channel into a single line so we can do diff,awk,sed type operations on it (script is parseIpcIniFile)

Here are the orphaned channels which are being removed (Qty 40):

Y END presssure Aug 2014

20 days of the end station pressure including the two injection events.

Default NDS server has been changed temporarily

Because of maintenance, the default NDS server has been changed to h1nds0.  The raw minute data files for the last several months are being moved and would be unavailable on h1nds1.

Morning Installation Meeting Minutes

 

• Oplevs:  start HAM triples today?  organizing/cleaning parts
• Discussion about the LVEA "major leaker" at HAM4 & how this can affect upcoming work.  Vent possibly Thurs, which means roughing Fri & possibly weekend.
• Discussion about HAM6 alignment and also cable clean-up & ISI balancing which will also need to be done afterward. 
• EX:  Tiltmeter Chamber sealed up & pumping (Krishna)
• EY:  discussion about ETMy discharge test
• Property Auditor from CIT on-site
• Maintenance:  rcg2.8.5 build models (so changes will be in effect until after power outage), MSR battery swap, liquid nitrogen at EY

Diagnostic Breadboard Scans

The results from today's diagnostic breadboard scan.

The relative power noise measurement doesn't look too bad.  Better than the reference measurement at low frequencies below about 20 Hz but worse elsewhere but not by much.  The first loop power stabilisation servo performance is better than the reference signal at frequencies below about 40 Hz but worse for frequencies above about 1 kHz.

The frequency noise measurement is out of whack.  It is known that perhaps the gains on the servo are not adjusted to their correct values.  Currently the common gain is set to 27 dB and the fast gain to 17 dB.  This will have to be tuned up when time permits.

The beam pointing measurement looks good, or at least okay.

The mode scan looks almost identical to last week.  The percentage higher order mode content is fractionally lower this week but not significant I think.

CDS model and DAQ restart report, Monday 11th August 2014

model restarts logged for Mon 11/Aug/2014
2014_08_11 09:36 h1hpiitmy
2014_08_11 09:36 h1iopseib1
2014_08_11 09:36 h1isiitmy
2014_08_11 10:42 h1iopseih23
2014_08_11 10:42 h1isiham2
2014_08_11 10:42 h1isiham3
2014_08_11 10:44 h1hpiham2
2014_08_11 10:44 h1hpiham3
2014_08_11 13:58 h1iopsusb123
2014_08_11 13:58 h1susbs
2014_08_11 13:58 h1susitmx
2014_08_11 13:58 h1susitmy
2014_08_11 14:34 h1iopsusb123
2014_08_11 14:36 h1susbs
2014_08_11 14:38 h1susitmy
2014_08_11 14:39 h1susitmx

recovery restarts due to several problems with cpu freeze and non-driving DACs