This is Sheila, logged in as stefan Switching blends to test some of Rich's new filter's etmx tripped. Apparently according to rich this is a know problem, that the filters are incorrectly switched on a zero crossing instead of ramped. Guardian has recovered without a hitch.
Hard closed GV11 (Bad, abnormal, "clank" from cam mechanism a few seconds before motor stopped) -> portable RGA assembly is valved into Y2 beam tube -> avoid this apparatus (at Y-mid on elevated slab near GV12)
Took over for Justin/Pablo at about 2pm to cover the remainder of the shift. The only new activities I can add are the following:
PT410B seems to have responded, i.e. there looks to be some pressure "communication" via an inner O-ring (perhaps)
Scotty, Mitchell, The Stage 2 midplate was torqued, inner hex walls added and torqued. The stage 1 Close out plate was added and torqued, the stage 1 close out plate cover was added. No hardware has been added, as there are 405 shcs's and the temp in the cleanroom was 85 which became a good stopping point.
Aaron put a dongle into the T240 ground monitor electronics to put it into high gain mode, I've updated the caibration filters so we should now be getting calibrated ground spectrum
***_STSINF_B_(X,Y,Z)_OUT
TCS work ongoing in the corner station, mostly along X-arm today
0845 - LVEA transitioned to laser SAFE
1000 - Jodi staging equipment to be removed from LVEA, accessing exterior airlock located in South Bay area. Then Jodi to MY.
1005 - Corey to EX TMS lab for part hunt
1030-115 Beamtube cleaning along X1 by JoeD, ChrisS, ChristinaC (doors left open)
1100 - Jeff/Richard inspecting dust monitor vacuum lines in LVEA
1150 - Dave restarting H1IOPSEIH45
1245 - Karen to EY---advised to tread lightly near BSC10 (Jim working on iso loops)
1250 - LVEA transitioned laser HAZARD
1313 - TCS energizing CO2 laser on TCSX
1315 - Travis on parts hunt LVEA test stand
1400 - OPS handoff to Pablo
Briefly measured the green return beam on ISCTEY. The first attachment shows the beam profile about 5" or so downstream of the BS that splits WFS and PDH. This is very good, though you might be able to tell that some broad thing is on top of mostly Gaussian main beam.
There are several ghost beams that potentially interfere with the main beam, the closest one being AR reflection from the 1" lens between two MadCityLabs PZT mirrors. The ghost beam is about 3uW in the WFS path while the main beam is 730uW, so this is not that bad, but I'll misalign the lens slightly so that the beam will not come on top of the main beam. The second attachment shows the beam profile of this ghost beam measured at the same position as the first one.
There was also a strong ghost beam coming from the BS to split WFS and PDH path. Total power coming to this BS is about 5.7mW, 5mW goes to PDH and 730 goes to main WFS beam while the ghost beam is about 17uW. This one is shifted in YAW and is easy to block. The third attachment shows this beam measured at the same position as previous two, but the scan head shifted in YAW by about 3mm.
Also there are many many internal reflections coming out of Faraday that remain there even when the beam path to the chamber is blocked. The total power of these is 115uW. The brightest one is off in PIT but it was easy to block this by using an iris.
Calculated new output matrices for the IAL arm dither alignment: Loops to be used: OSC 1: ITM dither OCS 3: PZT2 (angular dither at end station) Loop better not used: OSC 2: dither PZT1 (~position at the end station, but I don't know how accurately this is true.) The output matrices are designed to only move the degree of freedom seen by the dither, i.e. OSC 1: only drives ITM OSC 3: drives 1.065*ITM + 1*ETM (PIT) and -1.065*ITM + 1*ETM (YAW) and for completeness OSC 2: drives 2.065*ITM + 1.779*ETM (PIT) and 2.065*ITM - 1.779*ETM (YAW) Calculation: OSC 3: - To rotate the beam axis around the end station, the ETM-to-ITM ratio has to be 1-to-gITM. - The relative signs have to be the same as in the "soft" mode for the WFS output matrix. OSC 2: - To parallel-shift beam axis the ETM-to-ITM ratio has to be (1-gETM)-to-(1-gITM). - Again, the relative signs have to be the same as in the "soft" mode for the WFS output matrix.
I noticed the frontend watchdog was still in FAIL state from last restart---I went into the H1Diode room and reset watchdog.
Laser Status: SysStat is good Output power is 27.9 W (should be around 30 W) FRONTEND WATCH is Active HPO WATCH is red PMC: It has been locked 3 days Reflected power is 1.4 Watts and PowerSum = 11.7 Watts. (Reflected Power should be <= 10% of PowerSum) FSS: It has been locked for 12 min (should be days/weeks) Threshold on transmitted photo-detector PD = 0.82 V (should be 0.9V) ISS: The diffracted power is around 2.54 % (should be 5-15%) Last saturation event was 13 minutes ago (should be days/weeks)
I forgot to define USERAPPS in the sitemap laucher script from icon, this should now be fixed. You may have to log out and log back in to get the fix (in the mean time start the sitemap from terminal).
I added a link from the VE/FMC pink button to the H0VE_FAN_SENSORS.adl screen.
Pump #1 was found to be 3000V and pump #2 5000V
Last Friday, Jim W. reported an offset on corner 2 of GS-13. Found BSC ISI Anti-Alias Interface Chassis (S1103401) had one of its outputs railing. AA Board S1101875 had U3 AD8622 on channel 6 replaced.
Combined report for the weekend
model restarts logged for Fri 04/Apr/2014
2014_04_04 15:07 h1isiham5
model restarts logged for Sat 05/Apr/2014
2014_04_05 07:27 h1fw1
2014_04_05 23:53 h1fw1
model restarts logged for Sun 06/Apr/2014 None reported
h1isiham5 expected, h1fw1 unexpected.
Last we we installed some lower frequency blend filters into the rX and rY filter banks for stage 1 and 2 of the ETMX and ITMX ISIs. This was motivated by seeing a lot of coherence between stage 1 and 2 rY motion to the optical lever pitch signal around the first suspension mode (COH >0.8 from 0.2-0.6Hz more or less).
I've taken some performance plots for these controllers (all data was taken with level 3 controllers)
Units are nm/rHz or nRad/rtHz
I tested three states, 11 DOFs using TCrappy, Stage 1 rZ using Start, - Black and Orange dotted lines T240 and Gs13 signals
9 DOFS using TCrappy, Stage 1 and 2 rY using TBetter (lower blend frequency see plot) Stage 1 rZ using Start Cyab line T240s
10 DOFs using TCrappy, Stage 1 and 2 rY using TBetter Blue, Brown and Pinks curves, T240, Gs13 and L4Cs
The interesting plots are rY which shows lots more isolation at the suspension mode, the GS13 sensor noise is ~3E-10 m/s/rHz @ 0.45Hz. Which says that we are way into the sensor noise (today was a windless sunday), so maybe we can relax the blend a bit and knock down the microseism a bit., I'm a little suspicious that i made a calculation error here
The X plot shows some increase below 0,2Hz
The rZ plot shows a fair amount of microseism which is being increase by the Tcrappy blends, we should try a more aggressive blend for stage 1 rZ
Also ITMY does not have a good set of level 3 controller installed
I did screw up the noise floor, the GS13 spectrum hasn't been taken out of the spetrum yet,that adds a factor of 1/5 and makes the noise floor ~8E-11m/s/rtHz, the spectrum is at ~1E-11m/s/rthz at 0.5Hz
will run for ~ 16 hours (undamped / damped for main and reaction chain)
FInished when checked 4/7 (Arnaud is away).
M0 undamped: 2014-04-02-1080519986_H1SUSETMY_M0_0p01to50Hz_tf.mat
M0 damped: 2014-04-02-1080537980_H1SUSETMY_M0_0p01to50Hz_tf.mat
R0 undamped: 2014-04-03-1080555846_H1SUSETMY_R0_0p01to50Hz_tf.mat
R0 damped: 2014-04-03-1080573824_H1SUSETMY_R0_0p01to50Hz_tf.mat
Everything looks good except that as usual the R0 cabling has pushed the pitch modes up in frequency.
Comparison plots pending.
For further record, it's actually HEPI-HAM3
Mark B. Resuming work on BSFM02. Will take damped and undamped TFs and damped and undamped spectra.
Mark B. Done for the day. Undamped TF data is 2012-09-26_1900_X1SUSBSFM02_M1_*_WhiteNoise.xml, and damped TF data is 2012-09-26_2000_X1SUSBSFM02_M1_*_WhiteNoise.xml . Plots for these data set are appended. I've added the appropriate lines to plotallbsfm_tfs.m and committed it but I haven't run it - I want to check that it does the right thing with data taken on H2 but filed as X1. Spectra time segment starts are startTimeRef.gps = 1032753893; % GPS Start Time Damping OFF startTimeRes.gps = 1032752625; % GPS Start Time Damping ON I still need to generate plots for these and the ones earlier today, but as mentioned previously, first I have to modify plotbsfm_spectraBSFM02.m to accept X1 data (the script it's based on was hard-wired to L1/H1/H2).
Mark B. Here the comparison plot with all the BSFM02 data plus some for the real H2 FMY and X2 BSFM06. The noise in the BSFM02 data sets is rather worse than X2 BSFM06 (but comparable to H2 FMY), so it looks like we don't have the best drive parameters. However it does look like noise and there don't seem to be any significant features common to the noisy bits of 2012-09-25_1100 and 2012-09-26_0900.
Mark B. After some discussion with Stuart, I processed the spectrum data from 7/26/12 morning and evening two ways. First I used a custom plotbsfm_spectraBSFM02.m to process it as X1/BSFM02/BUILD01 with tags of 2012-09-26_0900 (morning) and 2012-09-26_1900 (evening) with names like ^/trunk/BSFM/X1/BSFM02/BUILD01/SAGM*/Results/2012-09-26_*900_X1SUSBSFM02BUILD01H2:SUS-FMY_*.pdf So if anyone is looking for the data by following the directory structure in the usual fashion for a Phase 1b test, appropriate plots will be there. The captions in these plots also specify X1 BSFM02 primarily and H2 FMY secondarily. We also used the stock plotbsfm_spectra.m to process the data purely as H2:FMy with names like ^trunk/BSFM/H2/FMY/SAGM*/Results/2012-09-26_1900_H2SUSFMY_*.pdf This is so that it can be found by the stock version of plotallbsfm_spectra.m, which Stuart felt was too much hassle to customize. We added two new lines to the measList section with comments to the effect that the suspension in each case was really BSFM02. Attached is a set of comparison plots with the morning and afternoon's data. Unfortunately we couldn't include the 'L1','BS','2012-09-24_1200' dataset because it doesn't seem to have been committed from LLO.
In preparation for the Acceptance review, I redid the TF plots with up-to-date comparisons.
Red: 3IFO Phase 1b undamped (2012-09-26_1900)
Pink: 3IFO Phase 1b damped (2012-09-26_2000)
Black: H1 BS Phase 3b undamped (2013-07-30_1059269030)
Orange: L1 BS Phase 3b undamped (2013-08-29_0900)
Because the data was taken on a mechanical test stand in the LVEA with other work going on around, it is somewhat noisy (especially up to about 0.6 Hz in most DOFs and throughout in P) and the damping is a bit strong, but the peaks in the undamped TFs are very clean and in exactly the right positions.
I also redid the spectra with comparisons.
Green: 3IFO BS 2012-09-26_0900
Red: 3IFO BS 2012-09-26_1900 (later the same day)
Cyan: H1 BS 2013-02-25_1000 (on BSTST test stand)
Purple: H1 BS 2013-07-24_1400
Blue: L1 BS 2013-11-27_0930
