Leak testing done @ X-end with the exception of the viewports which I should be able to get to tomorrow -> Discovered that the gate valve which isolates IP12 is leaking > 3 x 10-7 torr*l/sec and will need to be addressed at some point.
- Fire department at MX and EX
- Dust alarm: EX_DST1_1, EX_DST1_5 ("INVALID" values)
- CDS alarm: H1:SUSB6-SUS-ETMY--CPU-MAX (Dave said is a bug)
- SUS alarm OSEM5 - OSEM6: Mark explain that this is a special situation when systems are not in vacuum
- PSL alarm: H1:PSL-ENV_LASERRM_ACN_TEMP_DEGf (Michael took over)
- Hugo restarted several models: HAM1,2,3; HEPI; etc.
- Dave restart DAC
Welding finished Tuesday; system pressured tested with argon. One leak was found near HAM4 and was repaired this afternoon. The system (LVEA Portion) is up to 125psi and holding. Will sit at this for a couple days to make sure there are no small leaks. The Actuator Hoses still need to be connected to the 4-way valves at HAM6 NW corner. Otherwise, all connections on the hardline side are permanent. We will do a check round of confirming the Actuator Hose connections to the 4-way valves are tight and next week we'll start flushing the hardline side. I'll report in a couple days on the pressure test. Meanwhile, as usual, do not operate any valves on the HEPI system.
[Stuart A, Jeff B] Jeff reported issues running the automated Matlab TFs on his triple test-stand. I logged in remotely, but could not reproduce the errors he was seeing. So I have set Matlab TFs to run overnight on the LHO triple test stand. They will commence at ~8pm (CT) 6pm (PT), and run for approximately 8 hours. While configuring these to run I noted that the x1sushxts model had been restored with the incorrect HLTS settings, so I re-configured for a HSTS and have taken a safe BURT snapshot. n.b. please ensure watchdogs are un-tripped before leaving
We removed the septum between ham 3 and bsc 2, wraped in aluminum foil and ameristat, laid on a pallet. The bellows portion of the spool BE-3A was also removed and hard (aluminum) covers installed on both ends of said spool, and placed on a pallet. A aluminum cover was also installed on the rigid portion of BE-3A which is still connected to bsc 2. This spool will be removed tomorrow.
I and Kiwamu disconnected all cable connectors from IOT2L, and cleared the area around the table in preparation for IOT move.
LEXAN covers were put in place on the viewports.
Laser curtains/dividers were put aside in front of the PSL room and are leaning on the west wall.
Things that seemed to be for I/O purpose (labeled containers for IO mirrors, some mirrors and a couple of mirror holders) were put in front of Cheryl's desk.
When moving the table:
1. Do NOT crane it as it would be hazardous, they're not designed for this. Unlike iLIGO tables, the legs of these are merely held down by claws.
2. One heavy cable bundle is still attached to the table by a zip tie. Break it first.
3. Two ducts are still trapped between the chamber and the table, though the duct clamps are loose. We need to keep these ducts.
Arnaud P. and Mark B. We noticed that the OSEMs on the M2 and M3 levels of PR2 were dead. Trending revealed that they had been dead since Tue 1/29. Richard investigated and found that the power to the AA chassis had not been turned back on after the power supply work that day (alog 5300). They're now back on and working.
Betsy and Deepak put the PRM and PR3 M2 and M3 OSEMs into the OL condition and I logged them. The values with corresponding gains and offsets are as follows:
>> prettyOSEMgains(logOLs('H1','PRM'),'PRM')
...
M2UL 24227 1.238 -12113
M2LL 25363 1.183 -12682
M2UR 25248 1.188 -12624
M2LR 26266 1.142 -13133
M3UL 24755 1.212 -12377
M3LL 24556 1.222 -12278
M3UR 26514 1.131 -13257
M3LR 25374 1.182 -12687
>> prettyOSEMgains(logOLs('H1','PR3'),'PR3')
...
M2UL 17618 1.703 -8809
M2LL 20217 1.484 -10109
M2UR 18644 1.609 -9322
M2LR 17674 1.697 -8837
M3UL 17262 1.738 -8631
M3LL 22811 1.315 -11406
M3UR 24286 1.235 -12143
M3LR 17108 1.754 -8554
Attached power spectra of MC2 and PR2 from yesterday afternoon Feb 12th, comparing damping on and off.
(Late Post) Upgraded remaining 2 C2960 edge switches (sw-lvea-aux1, sw-mech-aux) to IOS 15.0.2SE2. Upgraded C1142 wireless access points in LVEA and EY to IOS 12.4.25dJA2. All work completed by 9AM today.
Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot requested from 5 PM Feb. 11 to 5 PM Feb 12. Also attached are plots of the modes to show when they were running/acquiring data. Data was taken from h1nds1. 9720 seconds worth of data was unavailable on this server 1440.0 minutes of trend displayed 'No data output' errors on some plots
HAM 2,3 volume was done venting this morning Apollo removed the east door on HAM 3 and the blank on the septum Filiberto and Vincent changed the connections of the ISI and HEPI cables to the BSC 1 expansion chassis to conform with the drawings for ADC and DAC usage Richard to end Y to work on access control system Filiberto moved satellite boxes for BSC1 to newly installed rack Mark B. started running transfer functions on PR3 Fire department was on site testing alarms Eric installed valves in the HEPI hydraulic lines Jim working on BS in test stand in the afternoon Rick went into the H1 PSL enclosure to investigate temperature fluctuations, turned out to be normal CDS maintenance work
SEI ITMY: Vincent and Richard. Changed the h1isiitmy and h1hpiitmy models to agree with Ben's drawings. Rearranged the ADC cables at the rear of the IO Chassis as part of this change. WP 3699 is closed.
added h1seib2 to the Dolphin and DAQ networks.
Installed new channel list in the h1broadcast0 dmt data. Restarted DAQ.
Cleaned up the EDCU CDS channels to remove obsolete front ends and add new front ends.
Jim connected h1oaf0, h1lsc0,h1asc0 RFM to the two RFM switches (X and Y arm), this removed the IPC errors on these front ends.
Imported h2susauxb478 as a first release of h1susauxb123 (removed FMX,Y components).
Powered up h1susauxh34 now that the IO Chassis power supply problem was resolved.
Added h1susbs, h1iopsusauxb123, h1susauxb123, h1iopsusauxh34 and h1susauxh34 to the DAQ.
New IOP models (drawing cleanup and adding SVN Id and HeadURL tags) installed into: h1iopseib1, h1iopseib2, h1iopsusauxh34, h1iopsusauxh2, h1iopsusauxb123.
WP3713 remains open as Hugo did not get to loading the new HAM ISI and HPI models. This may be done later this week.
SUS H1-R6 Field Rack was placed between BSC2 and BSC3 by Apollo. Moved SUS SAT Units for ITMY into final rack location. Units had to be powered down and disconnected for pulling and dressing cables into rack. All associated electronics have been reconnected and powered up. Filiberto Clara
We removed the east door on ham 3 and then removed the blank on the septum. The door was then replaced on the ham with 4 bolts. All but 4 bolts on the BE-3A spool have been removed and those remaining 4 were backed off 1 turn in preperation for removal of septum and spool tomorrow.
Deepak and Bubba report they're done for the day, so commencing Matlab TFs on PR3.
Data taken, apparently successfully, plots pending. Undamped: ^/trunk/HLTS/H1/PR3/SAGM1/Data/2013-02-12-1044746361_H1SUSPR3_M1_0p01to50Hz_tf.mat Damped: ^/trunk/HLTS/H1/PR3/SAGM1/Data/2013-02-12-1044766428_H1SUSPR3_M1_0p01to50Hz_tf.mat
Plots finally - all good. This is a pass for Phase 2b TFs. Phase 2b spectra were waiting on some adjustments to the M3 OSEMs per alog 5499 (since fixed) and will be taken soon.
Cyrus Reed, Jim Batch Run Cat. 5e cable for HEPI pump controller in Mechanical room mezzanine. Connect pump controller to network switch, reconfigure network settings in the pump controller to connect to the slow controls network. Controller was NOT rebooted or restarted during this reconfigure. Rename pump controller to h1hpipumpctrll0, modify user accounts to conform to CDS system. Mount /opt/rtcds, /opt/rtapps, and /opt/cdscfg directories from h1boot to the pump controller.
[Kiwamu, Paul]
Just before the vent today we measured new noise spectra for the frequency and length feedback paths.
The 'whitening filters' in the IMC_X path (see Giacomo's LHO alog entry 5311) were not engaged. They were put in the model at LLO in an attempt to combat the digital noise in IMC_X above ~50Hz (see Anamaria's LLO alog entry 5821) but need to be taken account of when plotting the data.
We corrected the IMC_F frequency to length calibration to give the equivalent motion of MC2, instead of the equivalent round trip length change. This has now been edited in the filter bank for the IMC_X path; the FtoL filter has been changed to a DC gain of 5.8465e-14 (dX=df x lambda/(2FSR)).
Relevant paramters during the measurement:
Common mode gain 20dB
Common mode filters: Compensation and 1st Boost
Fast gain -2dB
Slow path bypassed offsets and filters
MC2 M3 lock gain -1000, engaged filters: 150:4 and CLP100
MC2 M2 lock gain 0.06, engaged filters: 0.01:0.1, 0.03:1, Stab8:2, 300:1 and ELF80
Damping filter: resg and Ellip50 (the filter in IMC_X path was switched to the wresg filter to reflect this change)
Jeff quite rightly pointed out that there are actually 2 more filter banks in the length path for the IMC which I didn't mention in the above post.
One of these is the H1:IMC_L bank, with the following 3 filters engaged and with Gain=1: antiWhite, roll3notch and bouncenotch.
The other bank is the H1:LSC-IMC bank, with 1 blank filter engaged with Gain=1. I'm not sure yet what the purpose of this bank is but would happy to know if someone else does! I'll try to get a signal flow chart up here soon, though it may be a little trickier from off-site.
I was revisiting this measurement and I thought it might be useful to add the PSL frequency noise requirement line for comparison (see attached).
Viton pads are usually set under the balancing masses of the HAM-ISIs in order to damp resonances at high frequencies (above 100Hz).
The SEI team would like to asses the improvements that the Viton Pads help achieving. To do so, we decided to have viton pads under the balancing masses of the ISIs of LLO's IMC, and to try without those pads here at LHO.
Transfer functions were measured ovenight on LHO HAM3-ISI. We compared those transfer functions with the ones measured at LLO under an equivalent state:
Comparative plots are attached.
The script which produced the plots mentioned above was re-checked. The curves it displays match with the ouput of the generic commissioning scripts, for both LLO and LHO.
Data in the 5Hz-200Hz range was retreived and added to the plot. Results are attached.
The results presented above were calibrated and transposed into the cartesian Basis, as performed during the step 3 of the commissioning process of HAM-ISIs.
Narrow peaks can still be seen on LLO's transfer functions. We held off on the installation of the Scraper Baffles here, while they were already on the ISI at LLO, at the time of the measurement. It could be the cause of it.
Once HAM3 chamber is open, we will look at the items installed on the ISI. It should help clarifying the cause those peaks that we did not witness here.
I attached a picture of HAM3 chamber taken on Dec 6th 2012. Pumpdown started on Dec. 21st.
We had probably set these before since these numbers were very close to the ones found in the medm. Nonetheless, we updated the medm fields with these numbers and then set the AOSEMs to 50% OLV. Mark and Arnaud have been obtaining spectra for PR3 and PRM, one of the last measurements to conclude Phase 2b testing.