The HEPI stops at BSC10 were pulled back for the next phase of the DetChar study. However, Jeff and Guillermo are running some TFs before it goes into the nominal state for DetChar.
The HEPI is now Isolated and the ISI is High_Isolated both stages,
Gary T, Danny S, Stuart A, Matt H, Mark L (Apollo)
The closeup of the X-end (BSC9) is complete. Stuart has a detailed log of the timeline of the steps we did everything that he will post to this alog which gives various info on how long things took, particulates on optic, etc.
Before heading down a round table discussion (including Mike L, Norna, Calum T, Rich A, Gary T, Matt H, Danny S) looked at the information regarding the deionisation tests done at LHO and CIT and what we should do going forward in terms of using the top gun for pulling first contact. The decision was to blow between the gap of the two optics first for a smal lperiod of time (with FC still on ERM and HR of main opitc) to dislodge any large debris. Then starting with the ERM first contact, take around 2 minutes to peel this FC (blowing with top gun at the same time). Then on top of that (and starting with the ERM surface), for 1 minute blow on the ERM surface, then for a minute blow between the two optics, then back on ERM surface for another minute....and do this 9 times (for a total of 9 minutes) ending on the ERM. Thenn move to the HR of main optic. Take ~2min topeel FC here..blowing with top gun the whole time, then again starting with the HR surface, blow on this for a minute, then between the gap of the optic for a minute, then back on the HR surface for a minute (again 9 times...for a total of 9 minutes), ending on the HR surface.
So with this in mind, we headed to the end.
The Quad was locked
Wafers added to Quad
FC pulled on witness optic
FC pulled on ERM
Inspection of ERM surface with green light
FC pulled on HR surface main optic.
Inspection of HR surface with green light
Swung arm cavity back down
Unlocked Quad and ser EQ stops
Centered some OSEMs (BOSEMs on main and reaction chain and aOSEMs on L1 stage)
Ran quick TF's on Quad main and reaction chain to see if free
Door went on
Below are the particle counts taken during the closeout of the chamber. To interpret when during the closeout these were taken look at Stuarts timeline and look at the 0.3um particle size counts reading that he lists. Then look at the pics and look at the grey Met one counter that gives same particle counts as is listed in timeline. I have taken side by side counts using two different particle counters at the same time, same place, same duration (and I believe same settings), showing how we get different results.
Also the firt two photos show the In cleanroom and then initial in chamber particle counts (thats not in Stuarts timeline)
Attached below is a log and particle counts taken during the BSC9 close-out work covering the period 1055 (local) to 1315 (local), as well as Danny's drawing of the first contact residue on each optic.
Kiwamu and Dave.
We rebuilt h1lsc using RCG2.8.4 and restarted the model. We found that the "LOAD MATRIX" button is intermittent.
The DAQ status of h1lsc is now 0x2000 due to the channel type change. Kiwamu says its ok to leave it like this until the next DAQ restart.
ITMY
- lock ISI
- FC on
- FC off
- Unlock ISI
- Clean
ITMX
- FC off
- Wipe
ITMY Spool
- finish CPB work
PR2
- Take a look at it from BSC2
HAM6
- Install VP on septum
ETM09
- Close out
The HAM-ISI and HEPI MEDM screens were updated to match the latest IOP Dackill part naming convention. Details can be found in the SEI aLog entry #510
Work was performed under WP #4765 (signatures collected by Arnaud), which can now be closed.
Yesterday with the help of Apollo the CPB was successfully installed. This morning the final balance and alignment was completed.
Awesome. Good job to you all, and good riddance to baffles.
I guess my help did not matter that much to you. My heart is broken
DAQ was restarted to:
use the latest Beckhoff INI files (EY illuminator and HWS additions)
resync h1odcx FE data following PCAL additions.
After first verifying that no critical measurements were being taken, I performed an nmap port scan of the H1FE VLAN. This caused the daqd process on h1broadcaster to fail, it was subsequently restarted by monit.
I ran the port scan a second time, and h1broadcast0 daqd did not fail this time.
The log files show a correlation between port scan and the failure. I will exclude all DAQ hosts from future port scans.
log file for this event attached.
Matlab TFs taken on the TMSX (TMTS) suspension overnight confirm the split T DOF peak issue has been resolved (see LHO aLOG entry 13086):- - TMSX M1-M1 undamped (2014-07-30_1090800966_H1SUSTMSX_M1_ALL_TFs.pdf) BSC9 ISI Status: ISI damped. TMSX alignment: No offset was applied during this measurement. The above measurements have been compared with the H1 TMSY suspension and the best/cleanest (in-vacuum) H1 TMSX measurement (alltmtss_2014-07-31_Phase3a_H1TMTSs_M1_Doff_ALL_ZOOMED_TFs.pdf), the plot key is:- Blue Trace = Model (tmtsopt_production). Orange Trace = H1 TMSY M1 (2014−07−30_1400), Phase 3b (in-vacuum). Black Trace = H1 TMSX M1 (2013−12−05_1070337667), Phase 3b (in-vacuum). Magenta Trace = H1 TMSX M1 (2014−07−30_1090800966), Phase 3a (in-air). Summary: TMSX is consistent with previous measurements and is a close match to the model. The 2nd T DOF peak is no longer split and the Q appears lower than seen in previous measurements, but we should certainly proceed with closing-out this chamber. All data, scripts and plots have been committed to the sus svn as of this entry.
The ODC went red at 0808pdt when the guardian took the Stage2 of the ETMy ISI from HIGH_ISOLATED to DAMPED.
HEPI at EndY remains on stops ith the MasterSwitch open; its ODC is red.
I did excitations in ISI ST1 (H1:ISI-ETMY_ST1_ISO_X_EXC_DQ), starting July 31, 20:50:00 UTC.
no restarts reported
Travis S. Gary T. Matt H. Greg G. Final (hopefully!) alignment of the in-vacuum optics for TCS was completed today. ITMx had already had an alignment done by Thomas Vo and myself last month, but Travis and I made sure things were well centered on SM1 in BSC3. A range of motion test showed no clipping throughout the compensation plate for ITMx. For ITMy I was aided by Gary and Matt. ITMy was an initial alignment and took a little more finagling. The periscope on the table had to be adjusted a bit, and some small adjustment to SM1 was done; but otherwise alignment went smoother than I expected. The beam is traveling a little high through the outside viewport optic on BSC1 but is well centered on the inner optic. The range of motion test showed there to be clipping on the Y arm elliptical baffle towards the upper range of motion. Matt noticed irregularities on the surface of the mirrors and will hopefully be able to post pictures later.
Hard to describe exactly what look like, but think of if had a drop of water in middle of mirror and then blow with a blast of air directly in the centre and everything went out in lines from the centre to the edge.
See pics for my sketch and pics
This is reminiscent of what you saw at LLO in aLOG 8680.
https://alog.ligo-la.caltech.edu/aLOG/uploads/8680_20130911144133_DSCF4196.jpg
Thanks to Betsy
Following on after-HAM3-closeout tfs results of lowest stages of PR2 -which were showing high q resonant pole at 45 Hz in the M3 L-LR transfer function-, and in order to determine if the problem is in chamber or in the electronics chain, I swapped middle stage and bottom stage cables at the in-air vacuum flange of HAM3 (respectively H1:SUS_HAM3-25 and H1:SUS_HAM3-26), and took those measurements again.
As showed on the attached screenshot, the pole moves to the M2 LR-LR tf after swapping the cables, and disappear on the M3 LR-LR tf, which eliminates issues in the electronic chains, and indicates that the problem is in-chamber.
Obviously, the cables were swapped back to their nominal position
In order to find where the cable at the vacuum feedthrough is, I used the wiring diagram D1000599 indicating Middle and Bottom stage of PR2 are plugged to feedthrough D6. The flange layout D1002874 indicates D6 is on the South-West side of HAM3 but the cables were found to be plugged in the North-East side of HAM3.
It should be noted that the 45.3 Hz feature is also clearly visible in the power spectra for the M3 LR channel (see attached), which may also help with quick diagnostics/debugging in future.
